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J-VALVES Specializes In Manufacturing Industrial Gate Valves

J-VALVES comprehensive product lineup comprises wedge gate valves, featuring excellent sealing performance and durability; flexible gate valves, known for their adaptability to various working conditions; pressure-sealed gate valves, ensuring reliable pressure containment; high-temperature gate valves, engineered to withstand extreme temperatures; flat gate valves, offering smooth flow control; rigid gate valves, providing robust structural integrity; bellows gate valves, with enhanced sealing and protection against external elements; and low-temperature gate valves, designed for applications in cryogenic environments.

J-Valves China ASME/DIN/JIS 304/316 Flexible Wedge 300lb Flanged Rising Stem Stainless Steel Gate Valve with Handwheel Bevel Gear

Our ASME/DIN/JIS 304/316 Flexible Wedge 300lb Flanged Rising Stem Stainless Steel Gate Valve with Handwheel Bevel Gear is a high-quality industrial valve. It is designed according to ASME, DIN, and JIS standards, ensuring broad compatibility in different industrial systems.
Constructed with 304 or 316 stainless steel, it offers excellent corrosion resistance, suitable for various corrosive media. The flexible wedge design allows for better sealing performance, adapting to different working conditions. With a 300lb pressure rating, it can handle high-pressure applications. The rising stem design enables easy visual indication of the valve's open or closed status. The handwheel bevel gear provides smooth and efficient operation, reducing the effort required to open or close the valve. This gate valve is ideal for industries such as oil and gas, chemical, and water treatment.

J-Valves China Forged Steel F304 Flange 1" DN25 150lb Gate Valve

Crafted from high - grade F304 forged steel, it ensures durability and corrosion resistance. With a 1" (DN25) size and 150lb pressure rating, it suits various applications.
Designed to API 602 and ANSI B16.34 standards, it features a reliable sealing design for

J-Valves China ANSI Class 150/300 Forged Steel Flange End Gate Valve

The J-Valves China ANSI Class 150/300 Forged Steel Flange End Gate Valve is a high-quality industrial valve. It is designed to control the flow of various media such as oil, gas, and water. Made of forged steel, it offers excellent durability and strength. The valve complies with ANSI standards, ensuring reliable performance. With flange end connections, it can be easily installed in pipelines. Available in Class 150 and 300 pressure ratings, it suits different applications. It features a simple yet effective operation mechanism, allowing for smooth opening and closing. This gate valve is a trusted choice for industrial fluid control needs.

J-Valves China API602 1/2 Inch Butt Weld Class800 Bolted Bonnet A105 Forged Steel Gate Valve

The J-Valves China API602 1/2 Inch Butt Weld Class800 Bolted Bonnet A105 Forged Steel Gate Valve is a high-quality industrial valve. Designed to API 602 standard, it ensures reliable performance. The 1/2-inch butt weld end allows for secure connection. With a Class 800 rating, it can withstand high pressures. Made of A105 forged steel, it offers excellent durability and resistance to corrosion. The bolted bonnet design facilitates easy maintenance. Ideal for various applications, it can handle water, gas, oil and other media, controlling flow and pressure effectively.

J-Valves China DIN 6′′ 300# Carbon Steel Bellows Seal Cryogenic Gate Valve

The J-Valves China DIN 6′′ 300# Carbon Steel Bellows Seal Cryogenic Gate Valve is a top - tier product. With a 6 - inch diameter and 300# pressure rating, it's designed for cryogenic applications. Made of carbon steel, it offers high strength and durability. The bellows seal provides excellent sealing performance, preventing any leakage of cryogenic media. This gate valve is suitable for various industries handling extremely cold fluids, ensuring reliable operation and long - term service life under harsh low - temperature conditions.

J-Valves China DIN DN100 SS304/316 Carbon Stainless Steel Price Flange Manual Gate Valve

The J-Valves China DIN DN100 SS304/316 Carbon Stainless Steel Flange Manual Gate Valve is a high-quality option for various applications. It can handle media like water, natural gas, oil, and some corrosive liquids. With a straight-through type design, it ensures smooth flow. The valve features flange connection, suitable for ordinary pressure systems. Made of SS304/316 carbon stainless steel, it offers excellent durability and corrosion resistance. It is manually operated for easy control. The price is competitive, starting from [specific price] per piece with a minimum order quantity of [MOQ].

Quality Industrial Valve Product Made in China J-Valves 24'' 600LB RF Cast Cabon Steel WC6 Hydrodynamic Actuator Rising Stem Gate Valve

The 24'' 600LB RF Cast Carbon Steel WC6 Hydrodynamic Actuator Rising Stem Gate Valve is designed for heavy-duty industrial applications requiring reliable isolation. Constructed with precision-cast WC6 alloy steel, it withstands high temperatures up to 425°C and corrosive media in power generation, oil refining, and chemical processing. The hydrodynamic actuator paired with a rising stem provides smooth, low-effort operation, while the solid wedge disc ensures unidirectional tight shut-off. Compliant with API 600 and ASME B16.34 standards, this valve features a bolted bonnet for easy maintenance and is suitable for moderate-pressure pipelines.

J-Valves made in China 10K Stainless Steel CF8m Flanged Gate Valve

Our 10K Stainless Steel CF8m Flanged Gate Valve, proudly made in China by J-Valves, excels in performance. Constructed with a bolted body and full port, it ensures smooth flow. The valve adheres to JIS B2071 standard, and its flange meets JIS 2220 requirements.
It comes in sizes ranging from 1/2" - 48" (DN15 - DN1200), with a pressure rating of 10K. Made of CF8m stainless steel, it suits media like water, oil, and natural gas, with a working temperature of -29 - 425 ºC. Available for manual, pneumatic, or electric operation, it features high precision from CNC machining and reliable sealing.

J-Valves China Flange End GB Rising Stem Investment Wcb/CF8/CF8m Gate Valve

Introducing J-Valves' China Flange End GB Rising Stem Gate Valve. Available in WCB, CF8, and CF8M materials, it's suitable for diverse industrial applications. With a rising stem design, it offers easy position indication. The flange end connection ensures secure installation. Complying with GB standards, it guarantees reliable performance. Whether for water, oil, or gas systems, this gate valve provides excellent flow control and durability. Trust J-Valves for high-quality valve solutions.

J-Valves China 150# Stainless Steel CF8/CF8m Flanged ANSI Class Gate Valve

The J-Valves China 150# Stainless Steel CF8/CF8m Flanged ANSI Class Gate Valve is a high-quality industrial valve. Made of CF8/CF8m stainless steel, it offers excellent corrosion resistance, suitable for various harsh media. With a 150# pressure rating in ANSI Class standard, it ensures reliable performance under normal working pressures. The flanged connection type makes installation and maintenance convenient. This gate valve is designed to fully open or close fluid flow, featuring low flow resistance and long service life. Ideal for industries like oil, gas, and chemical, it effectively controls pipeline media.

J-Valves China DIN Standard Pn25 Carbon Steel A105 Trim 8 Solid Wedge Gate Valve

J-Valves China DIN Standard Pn25 Carbon Steel A105 Trim 8 Solid Wedge Gate Valve
Our J-Valves China DIN Standard Pn25 Carbon Steel A105 Trim 8 Solid Wedge Gate Valve is an ideal solution for fluid control. Constructed from high - quality A105 carbon steel, it ensures excellent durability and resistance to corrosion.
Rated at PN25, it’s suitable for a wide range of medium - pressure applications. The Trim 8 Solid Wedge design enables tight shut - off, preventing leakage effectively. Compliant with DIN standards, it meets international quality requirements. This valve offers smooth operation, reduces maintenance needs, and can be used in industries like oil, gas, and water treatment, delivering reliable performance.

J-Valves China Flange End 150lb Casting Wcb Rising Stem Flange End Gate Valve

Our J-Valves China Flange End 150lb Casting WCB Rising Stem Flange End Gate Valve is a top - tier industrial solution. Constructed from WCB castings, it exhibits excellent strength and durability, making it suitable for various demanding applications.

The 150lb rating meets international pressure standards. The rising stem design offers clear indication of the valve’s position, ensuring easy operation and precise flow control. With flange end connections, installation is straightforward, reducing downtime. Whether for water, gas, or other media transportation systems, this gate valve provides reliable performance, enhancing the efficiency and safety of your operations.

J-Valves China150lb-2500lb Forged Steel Flange Rising Stem Gate Valve

J-Valves’ China series forged steel flange rising stem gate valves, available in pressure classes from 150lb to 2500lb, are the pinnacle of engineering precision. Constructed from high - grade forged steel, these valves offer remarkable durability and resistance to corrosion. The rising stem design allows for easy visual confirmation of the valve’s position, ensuring operational safety. Ideal for various industrial applications like oil & gas, chemical plants, and power generation, they provide tight shut - off, reducing leakage risks. Backed by advanced manufacturing techniques, they deliver consistent performance and long - term reliability.

J-Valves China 300lb Forged Steel A105n/F304/F316 Welded Flange Rising Stem Globe Valve

The J-Valves China 300lb Forged Steel Globe Valve is a top - tier industrial valve. Available in materials like A105n, F304, and F316, it features a welded flange and a rising stem.

Designed and manufactured following strict international standards, it ensures reliable performance. The forged steel construction offers high strength and durability. The rising stem design allows for easy operation and clear indication of the valve's open - close status. It is suitable for a wide range of media such as water, steam, oil, and gas in various industrial pipelines, providing excellent flow control and tight sealing.

J-Valves Made in China 600lb Forgeded Steel A105 API Flange Gate Valve

J-Valves’ 600lb forged steel gate valve, crafted in China, sets a new standard in industrial piping systems. Constructed from A105 steel, compliant with API specifications, it’s engineered to handle high - pressure applications with reliability. The valve’s robust design ensures excellent resistance to corrosion and mechanical stress. Its precisely machined parts and smooth operation reduce maintenance requirements. Whether in the oil and gas, power generation, or chemical industries, this gate valve guarantees secure flow control, delivering performance and durability you can count on.

J-Valves China F304/A105n/F316 600lb RF Forged Steel Rising Stem Flanged Gate Valve

The J-Valves China F304/A105n/F316 600lb RF Forged Steel Rising Stem Flanged Gate Valve is a top - tier industrial valve. Made of high - quality F304, A105n, and F316 forged steel, it offers excellent durability and corrosion resistance. With a pressure rating of 600lb and RF (Raised Face) flanged connection, it ensures a tight seal. The rising stem design allows for easy operation and clear indication of the valve's open - close status. Suitable for a wide range of media like water, oil, and gas, it is an ideal choice for various industrial pipelines.

J-Valves Made in China Stainless Steel CF8m 400lb 8 Inch RF Flanged Ends Gate Valve

The J-Valves stainless steel gate valve, proudly made in China, is a paragon of quality and reliability. Constructed from CF8M stainless steel, it offers exceptional corrosion resistance, ensuring long - term performance even in harsh environments.
Rated at 400lb and featuring 8 - inch RF flanged ends, this gate valve is ideal for a wide range of industrial applications. Its robust design enables precise control of fluid flow. The valve adheres to international standards, providing seamless integration into existing piping systems. With J-Valves, you're not just getting a valve; you're investing in a solution that combines advanced Chinese manufacturing with unwavering quality.

China-Made J-Valves 16inch Class 300 Carbon Steel WCB With Top Flange Short Stem Gearbox Operation Bolt Bonnect 2PC Trunnion Mounted Flanged End Ball Valve

Discover the precision-engineered 16" 300LB WCB Turbine-Operated 2PC Fixed Ball Valve. The WCB casting undergoes strict quality checks for flawless integrity. Its 16" dimension is calibrated for maximum flow with minimal pressure loss. The 300LB rating adheres to international standards, ensuring safety under extreme conditions. The turbine drive features advanced gearing for smooth rotation and accurate positioning. The 2PC fixed ball design reduces internal friction and wear. With enhanced sealing technology, it blocks leaks even at high pressures. Engineers rely on this valve for its technical superiority, enabling seamless fluid management in industrial pipelines.

China-Made J-Valves PN63 Forged Stainless Steel F304 DN20 OS&Y Flange End Handwheel Operation Gate Valve

Designed for high-pressure fluid control, this industrial-grade gate valve features a forged F304 stainless steel body, ensuring exceptional corrosion resistance and durability in aggressive media. Rated for PN63 (Class 400) pressure, it operates seamlessly across a temperature range of -196°C to 550°C, making it ideal for cryogenic and high-heat applications. The Outside Screw & Yoke (OS&Y) design keeps the stem threads isolated from the flow path, reducing wear and enabling visual stem position verification. Flange ends with raised face (RF) ensure leak-tight connections compliant with EN 1092-1 standards, while the handwheel-operated mechanism provides precise flow modulation without external power. Engineered for zero-leakage shutoff, its wedge-shaped disc and reinforced seat create bidirectional sealing even under 63-bar pressure differentials. Compliant with API 600 and ASME B16.34 specifications, this valve is widely used in chemical processing, LNG systems, and steam pipelines where reliability and low maintenance are critical. Optional lockable handwheel and ISO 5211 mounting pad add flexibility for automated upgrades.

J-Valves Made in China 2inch Flanged GB Rising Stem Investment Wcb/CF8/CF8m Gate Valve

Introducing the J-Valves Made in China 2-inch Flanged GB Rising Stem Gate Valve. Constructed with high - quality investment - cast WCB, CF8, or CF8M materials, this valve ensures durability and resistance to corrosion. The rising stem design allows for easy visual indication of the valve's open or closed status. Compliant with GB standards, it is suitable for a wide range of industrial applications, such as in the oil, gas, and water treatment industries. With its flanged connection, installation and maintenance are convenient. Trust J - Valves for reliable flow control solutions.

J-Valves Made in China Flanged 20" X 300lbs RF. Cast Body And Bonnet Gate Valve

Our J - Valves flanged gate valve, crafted in China, is a top - tier industrial solution. Measuring 20 inches with a 300 - lbs rating and a raised face (RF) design, it’s suitable for a wide range of high - pressure applications. The valve features a cast body and bonnet, offering excellent durability and resistance to corrosion.
The gate valve design ensures smooth on - off operation, minimizing flow resistance. Whether in the oil and gas, chemical, or water treatment industries, this valve guarantees reliable performance, long - term service life, and enhanced system efficiency.

GATE VALVES PRODUCTS

We possess distinct and remarkable advantages in large-diameter(big size) gate valves as well as high-temperature and high-pressure gate valves.

Pressure sealed gate valve

Big size gate valves

High temperature gate valve

Low temperature gate valve

J-VALVAES GATE VALVES

We can provide the professional spirit and quality !

I. Structure and Working Principle

1. Structural Features
Gate valves mainly consist of components such as the valve body, valve bonnet, gate disc, valve stem, and handwheel (or actuators like electric actuators). The valve body is usually a cast or forged structure with a passageway, capable of withstanding the pressure inside the pipeline. The valve bonnet is used to seal the upper part of the valve body to prevent the leakage of the medium. The gate disc is a key component of the gate valve, which can be of a wedge-shaped or parallel structure. The wedge-shaped gate disc is wedge-shaped and can achieve better sealing when closed, blocking the flow of the medium by closely fitting with the valve seat. The parallel gate disc has two parallel surfaces and relies on two valve seats to achieve sealing when closed.
The valve stem connects the gate disc with the handwheel or the actuator. Its function is to convert the rotary motion of the handwheel into the linear up-and-down motion of the gate disc. The handwheel is the part used when manually operating the gate valve. By rotating the handwheel, the valve stem drives the gate disc to rise or fall, thus controlling the opening and closing of the valve. For electric or pneumatic gate valves, the actuators will replace the handwheel and precisely operate the valve stem and gate disc according to control signals.

2. Working Principle
When the gate valve is in the open state, the gate disc is lifted above the passageway of the valve body, and the medium can flow smoothly through the passageway of the valve body. At this time, the pressure of the medium mainly acts on the sides of the valve body and the gate disc, and the pressure on the sealing parts of the valve is relatively small. When closing the gate valve, by rotating the handwheel or the actuator to lower the gate disc, the sealing surface of the gate disc makes close contact with the valve seat, thus cutting off the flow of the medium. Due to the sealing effect between the gate disc and the valve seat, the leakage of the medium can be effectively prevented.

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Low Fluid Resistance

When the gate valve is fully open, the gate disc is completely raised, and there is almost no obstruction in the internal passageway of the valve body, allowing the fluid to pass through in a straight line. Compared with other valves (such as globe valves), the fluid resistance coefficient of gate valves is relatively low. For example, in large water supply and drainage pipeline systems, the energy loss of water flowing through gate valves is relatively small, which can ensure a relatively high flow efficiency. This is a very important advantage for occasions requiring large-flow transportation, such as urban water supply and sewage discharge in sewage treatment plants.

Good Sealing Performance

The sealing of gate valves mainly relies on the close fit between the gate disc and the valve seat. When the valve is closed, the gate disc is under the pressure of the valve stem and can make good contact with the valve seat to form an effective seal. Especially for some high-performance gate valves, advanced sealing materials and precise processing techniques are adopted. For example, using elastic sealing materials to make valve seats can adapt to different medium pressures and temperatures and further improve the sealing performance. In the chemical industry, for some toxic, harmful, or flammable and explosive media, good sealing performance can prevent the leakage of media and ensure production safety and environmental safety.

Wide Range of Applications

Gate valves can be used for the control of various media, including water, steam, oil, and gases. They can adapt to different temperature and pressure ranges. In low-pressure and medium-pressure pipeline systems, gate valves are commonly used types of valves. For example, in general building water supply and drainage systems, gate valves can be used to control the flow of domestic water. In industrial steam pipelines, gate valves can also effectively control the supply of steam. Meanwhile, the diameter range of gate valves is very wide, ranging from a few millimeters for small diameters to several meters for large diameters, which can meet the needs of various pipeline sizes.

SINCE 2009

There are many brands of gate valves. How can we choose a suitable gate valve? Here are some key considerations:

Brand and Quality
Brand reputation: Choose gate valves of well-known brands. Usually, these brands are more guaranteed in terms of product quality, technological research and development, and after-sales service. For example, J-VALVES is a brand with good reputation.
Quality certification: Ensure that the gate valve has passed relevant quality certifications, such as ISO 9001 quality management system certification and API certification. These certifications are a manifestation of product quality.

Gate valve raw material inspection

After the raw materials arrive at the factory, we will conduct product PMI (Positive Material Identification) testing, visual inspection of material integrity, and check the heat number and material grade, etc.

Inspection during the processing of gate valves

During processing, we'll perform dimensional checks against production drawings to ensure products are made as per the drawings and within tolerance. Also, we'll visually inspect the product appearance.

100% pressure test for gate valves

Every single gate valve produced by J-VALVES is subject to a 100% pressure test, which is stringently carried out following the API 598 standard.

Finished product appearance inspection

Once the gate valve is finally finished, we will carry out visual examinations, test the paint thickness, and perform packaging checks.

Wedge Gate Valve

Wedge gate valves are widely used in petrochemical, natural gas, and shipbuilding engineering. Stable performance. The most commonly used materials are carbon steel, stainless steel, and high-temperature steel

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Professional quality

Parallel Gate Valve

It is mainly applied in high-pressure and high-temperature working conditions and is usually used together with a bypass valve. It is widely used in power plants.

Rising Stem Gate Valve

The connection between the valve stem and the gate disc is stable, ensuring smooth movement of the gate disc for reliable valve operation. The rising stem gate valve has a mature structure and complete manufacturing process, offering high reliability and adaptability to different working environments and conditions.

Low Temperature Gate Valve

Ultra-low temperature gate valves are mainly applied in the storage and transportation systems of extremely low-temperature media such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG). These systems need to maintain a stable operating state at extremely low temperatures, so the performance requirements for valves are very high. Adopt international standards BS6364 and MESC77/200.

Pressure Sealed Gate Valve

The pressure-sealed gate valve plays an extremely important role in systems such as petrochemical. This gate valve is named for its adoption of a pressure-sealed bonnet. It is suitable for medium-high pressure fields and special high-pressure occasions. Moreover, the higher the pressure, the better its sealing performance.

PROFESSIONAL TECHINCAL TEAM

Technology Service

J-VALVES CHINA have profound professional knowledge. Most members graduated from top universities in relevant majors and have been deeply engaged in the industrial gate valve field.

J-VALVES CHINA are familiar with fluid mechanics, mechanical transmission, stress and strain analysis and other knowledge, laying a foundation for product research and development.

J-VALVES CHINA R & D and innovation capabilities are outstanding. Adhering to the innovation concept, they break through traditions. J-VALVES CHINA introduce intelligent sensing technology to monitor the operating parameters of gate valves and adopt advanced surface treatment processes to improve corrosion resistance and adapt to harsh environments.

J-VALVES CHINA have rich practical experience. J-VALVES have participated in many major global industrial projects, such as those in petrochemical, water conservancy and hydropower, iron and steel metallurgy, urban gas and other fields. J-VALVES can customize gate valve solutions according to customer requirements to ensure stable operation.

Quality Assurance

All products undergo 100% factory testing and are 100% qualified in quality.
R&D And Design

Equipped with 3D and 2D design capabilities, there are 8 technical engineers on our team.
Highly efficient service

We promise that all inquiries will be replied to within 48 hours.

The Structure and Working Principle of Gate Valves

Gate Valve is composed of a valve body, a gate disc, a valve stem, seals, and a handwheel or a drive device. The valve body withstands the pressure of the medium, provides space for components, and serves as a passage for fluid. The gate disc, which comes in flat - plate and wedge - shaped types, is driven by the valve stem to move up and down in the valve body to control fluid flow. The valve stem connects the operating components to the gate disc, and the seal between it and the valve body prevents leakage. The seals ensure a tight seal between the gate disc, the valve stem, and the valve body. During operation, small - sized gate valves are opened by manually rotating the valve stem, while large - sized ones or those requiring automation use electric or pneumatic devices. Although gate valves can adjust flow to some extent, they are not precise in flow control, and are mostly used for fully - open or fully - closed applications.

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Industrial Gate Valve

J-VALVES industrial gate valves are meticulously designed in strict accordance with international standards such as API 600, ASME B16.34 and BS 5351. The product line mainly encompasses wedge gate valves, flexible gate valves and rigid gate valves. Depending on the specific pressure requirements, bolted bonnets or pressure seal bonnets are strategically employed to ensure optimal performance.

Gate valves possess remarkable advantages. They feature excellent sealing capabilities, guaranteeing minimal leakage even under high-pressure and high-temperature conditions. Their robust construction endows them with outstanding durability, capable of withstanding harsh operating environments. The precision engineering allows for smooth operation and precise flow control.

Widely recognized and trusted, J-VALVES industrial gate valves find extensive applications in multiple critical industries. They play a pivotal role in petroleum and natural gas exploration and production, offshore engineering projects, refining processes, power generation facilities as well as water conservancy systems, providing reliable fluid control solutions to meet diverse industrial demands.

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High Temperature Gate Valve

The design advantages of J-VALVES high-temperature gate valves mainly include excellent sealing performance, strong high-temperature resistance, low fluid resistance, convenient operation, easy maintenance, high reliability, and wide adaptability.

High-temperature gate valves Main application scenarios:
Petrochemical industry: refining and chemical synthesis.
Power industry: thermal and nuclear power generation.
Metallurgy industry: steel and non-ferrous metal smelting.
Glass manufacturing: glass furnace.
Cement production: cement kiln system.

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Pressure seal gate valves

I. Pressure Seal Gate Valves Product Overview
J-VALVES pressure seal gate valves, for high-pressure (1500 - 2500Lb), offer precise fluid control in industrial systems.
II. Pressure Seal Gate Valves Main Advantages
Sealing: Advanced self-sealing tech, quality alloy sealing surface, prevents leakage.
Pressure Resistance: Optimized alloy steel body, special joint design, bears high pressure.
Flow Control: Streamlined gate, precise drive, enables accurate flow adjustment.
Operation: Nitrided stainless stem, easy mechanism, reliable and effortless.
Maintenance: Modular, easy to disassemble, standardized wear parts, low downtime.
III. Pressure Seal Gate Valves Application Scenarios
Oil & Gas: Wellhead, pipeline nodes, controls flow, averts accidents.
Refining & Chemicals: In/out of reactors, for corrosive chem, ensures safety.
Power: Boiler steam, nuclear coolant, regulates flow, boosts efficiency & safety.
Offshore: Platforms, pipelines, reliable in harsh marine conditions.

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Slab Gate Valves

International Standards for J - VALVES Slab Gate Valves
Slab Gate Valves Design Standards
API6D,API 600 and ASME B16.34 cover general requirements for valves with flanged, butt - welding, and threaded ends, including pressure - temperature ratings, material requirements, dimensions, and tolerances.
Slab Gate Valves Face - to - Face Dimensions Standard
ASME B16.10 stipulates the face - to - face dimensions of valves, including the length requirements for different types and sizes of slab gate valves.
Slab Gate Valves Flange Connection Standard
ASME B16.5 is the American standard for steel flanges and flanged fittings, commonly used for the design of the flange connection between the gate valve and the pipeline.
Slab Gate Valves Pressure - Temperature Rating Standard
ASME B16.34 also includes regulations on pressure - temperature ratings, working together with other standards to provide comprehensive pressure - temperature parameter guidance for the design and use of gate valves.
Testing and Inspection Standard
API 598 details various test methods and acceptance criteria for gate valves, such as pressure testing and sealing testing.

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About Special Materials

Bronze Materials

The commonly used bronze materials include: B62 C83600, B148 C95800, B148 C95400. Bronze valves play a vital role in marine engineering, shipbuilding engineering, and fields related to seawater. These fields have extremely high requirements for valve materials, demanding outstanding corrosion resistance, high strength, and good mechanical properties.
High Temperature Alloy Steels (Cr-Mo Steel)

The high-temperature alloy steels (Cr-Mo Steel) such as ASTM A217 WC5, WC6, WC9, C5, C12, C12A and CA15 are widely used in the steam pipeline systems of oil refineries, petrochemical plants and thermal power generation.
Duplex Stainless Steels

Duplex Stainless Steels
2205 (UNS S31803, S32205),2507 (UNS S32750),ASTM A995 Gr 1A, 2A, 3A, 4A, 5A, 6A, 1B, 1C,CD4MCu (ASTM A890 - 4A),CD4MCuN (ASTM A890 - 5A),CD3MCuN (ASTM A890 - 6A)
Super Austenitic Stainless Steels(Super Duplex Stainless Steels)
904L (UNS N08904),ALLOY20 (UNS N08020) also known as Carpenter 20,CN7M (UNS N08700),AL - 6XN (UNS N08367),CN3MN (UNS J95404),254SMO (UNS S31254),F44 (UNS S31254), which is the same as 254SMO,CK3MCuN (UNS J93404),S31254, which is the same as 254SMO
Other Special Materials

Titanium and titanium alloys
Material series: such as ZTA1, ZTA2, ZTA3, ZTA9, ZTA10, ZTC4, TA1, TA2, TA3, TA9, TA10, TC4, etc
Nickel and nickel alloys
Material series: including N6, N4, N2, CZ100, Nickel200, Nickel201, N02200, N02201, etc
Monel alloy
Material series: such as Monel400, MonelK500, M35-1, M35-2, M35C, M30H, N04400, N05500, etc
Hastelloy alloy
Material series: Common ones include Hastelloy C276, Hastelloy B, Hastelloy B-2, Hastelloy C-22, Hastelloy C-4, Hastelloy G, Hastelloy G30, etc
Inconel nickel alloy
Material series: such as Inconel600, Inconel625, Incoloy800, Incoloy800H, Incoloy825, etc
zirconium
Material series: Zr702, Zr705, Zirconium702, Zirconium705, 702C, 705C, R60702, R60705, etc

J-VALVES Company Gate Valves Team Advantage

J-VALVES Company is staffed with proficient teams specialized in technology, quality inspection, production and sales, endowing it with a prominent competitive edge in the domain of gate valves.

Production team

The gate valve production team currently has 50 professional workers. Among them, the production manager has been engaged in industrial valve production for over 30 years.
Technical team

The technical team for gate valves is powerful. It includes two gate valve engineers who specifically focus on the design and research of gate valves, contributing to working conditions such as high temperature and high pressure, and ultra-low temperature.
Inspection Team

The inspection team, as a crucial part of the J-VALVES team, bears significant responsibilities. With professional and rigorous inspection procedures, 100% of the goods inspected by them meet the quality requirements. They strictly control every checkpoint of the product quality in an all-round and thorough manner, laying a solid foundation for the excellent quality of the company's products.

Gate valve production process flow

The production process of gate valves covers such links as design, raw material procurement, machining, assembly, inspection, and packaging and shipping. In the design stage, parameters are determined, modeled, simulated and optimized according to customer and working condition requirements and standards. For raw material procurement, high-quality suppliers are selected and materials are strictly inspected. Machining is divided into rough machining, finish machining and surface treatment. Assembly requires cleaning the parts and assembling and debugging according to the regulations. Inspection includes pressure and performance tests and appearance and dimension checks. The packaging uses plywood wooden boxes which are suitable for long-distance transportation.

SUBMIT

Necessary conditions for valve quotation

Valve type: specify which specific type of valve it is, such as gate valve, ball valve, butterfly valve, check valve, etc. The structure and principle of different types of valves are different, and the price difference is significant

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Size, Connection Method,Pressure, Material

The nominal diameter, nominal pressure, connection method (such as flange connection, threaded connection, welding connection, etc.), structural length and other dimensional parameters of the labeled valve, as well as the materials of the valve body, disc, seat, stem, etc., are important factors that determine the price of the valve.
02

Structure and Operation Mode of Gate Valve

The structure of gate valves can be divided into parallel gate valves and wedge gate valves according to the shape of the gate plate; Divided into open stem gate valve and concealed stem gate valve according to valve stem form
Operation mode: indicate manual, pneumatic, electric, hydraulic and other driving modes, valves with different driving modes
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Temperature And Operating Conditions

When selecting gate valves, it is advisable to provide as detailed information as possible about the specific temperature range and the medium. This will facilitate precise selection, not only preventing additional cost expenditures caused by incorrect selection, but also helping to choose the valves that match the working conditions and achieve effective cost control.

We have an excellent technical team

The production scope of J-VALVES company's gate valve products

Product pressure range: 150Lb~2500Lb
Size range: 1/2 "~80"
Material: Carbon steel, stainless steel, low-temperature steel, high-temperature material, ultra-low temperature, special material
Connection methods: flange connection, butt welding connection, threaded connection, socket welding connection, clamp connection
Operation modes: pneumatic, electric, hydraulic, gear, manual

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Main classifications of Gate Valves

By actuation method:

Manual flat gate valve: Driven by manually rotating the handwheel to drive the lifting of the gate, thus realizing the opening and closing of the valve. Suitable for small pipeline flow control, simple and convenient to operate, without external power source, and low cost.
Pneumatic flat gate valve: Powered by compressed air and driven by a pneumatic actuator to drive the movement of the gate. Suitable for occasions that require rapid response and precise control, such as fluid control in automated production lines. It can realize remote control and automated operation.
Electric flat gate valve: Driven by an electric motor and the gate is lifted and lowered by a reduction mechanism. It can realize remote control and automatic control. Suitable for large industrial pipelines and can be integrated with an automated control system for convenient remote monitoring and operation, but the cost is relatively high.

By structural characteristics:

Single-gate flat gate valve: Simple structure with only one gate. The gate moves up and down in a straight line in the valve body driven by the valve stem to realize the opening and closing of the valve. Suitable for general fluid control needs, and the manufacturing cost is relatively low.
Double-gate flat gate valve: It has two gates, usually a fixed gate and a movable gate. The two gates cooperate with each other to achieve sealing when closed. It has relatively strong sealing performance and wear resistance, suitable for occasions with high sealing performance requirements. However, the structure is relatively complex and the cost is also high.

By sealing surface material:

Metal-sealed flat gate valve: The sealing surface is made of metal materials such as stainless steel. It has the characteristics of high temperature resistance and wear resistance. Suitable for harsh working conditions such as high temperature, high pressure, and media containing solid particles, but the sealing performance is relatively slightly worse than that of non-metal seals.
Soft-sealed flat gate valve: The sealing surface is made of soft materials such as rubber or plastic. It has good sealing performance and can achieve zero leakage or micro-leakage. Generally used for medium transportation occasions at normal temperature, medium and low pressure and with high sealing requirements.

By purpose and application occasion:

Flat gate valve with diversion hole: The gate has a diversion hole. When fully opened, the diversion hole is connected with the channel hole, which is convenient for cleaning the pipeline. It is often used in pipelines that require pigging, such as long-distance natural gas pipelines.
Flat gate valve without diversion hole: The gate has no diversion hole. Suitable for pipelines that do not require pigging, such as refined oil transportation pipelines and storage equipment.
Oilfield flat gate valve: Specially designed for the special working conditions in the process of oilfield exploitation and production. Usually, it has high corrosion resistance, wear resistance and high pressure resistance, and can adapt to the harsh environment and complex media in the oilfield.
Pipeline flat gate valve: Widely used in various industrial pipeline transportation systems, such as the transportation pipelines of oil, natural gas, chemical raw materials, etc. It requires good sealing performance, corrosion resistance and reliability to ensure the safe operation of the pipeline.
Gas flat gate valve: Used in urban gas transmission pipe networks. The sealing and safety requirements for the valve are extremely high to prevent safety accidents caused by gas leakage.

Advantages of J-VALVES Company's Quality Control Methods for Gate Valves

J-VALVES CHINA COMPANY has obtained certifications such as ISO 9001 for its quality management system. This alignment with international standards has propelled the company's quality management processes onto the global stage, garnering extensive recognition in the international market. It significantly bolsters the company's brand image and market competitiveness, making it more effortless to earn the trust of both domestic and foreign customers and laying a solid foundation for global business expansion.
By adhering to international and industry standards like API and ASME to regulate production and quality control procedures, the company ensures the stability and consistency of its product quality. Regardless of the project or market environment, high-quality products can be consistently delivered, minimizing issues and risks stemming from inconsistent quality standards.

Quality Management

In terms of quality management, the quality specifications of gate valves are formulated according to national standards, industry standards and enterprise's own standards, and the internal enterprise standards are further refined in combination with actual working conditions.
Raw Material Testing

the source of raw material supply is strictly controlled, and each batch of raw materials is carefully inspected to meet the design requirements. At the same time, advanced software is used to optimize the design, and cross-department collaborative reviews are organized to ensure that the design is both reasonable and manufacturable.
Quality Control

In terms of quality control, process inspection links are set up during the production process, the precision of equipment is carefully maintained, and statistical process control is used to monitor key quality characteristics. After the finished products are completed, comprehensive performance tests and appearance inspections are carried out, and sampling inspections are carried out according to the sampling plan.

J-VALVES Company Gate Valves Advantage

J-VALVES holds remarkable advantages in gate valve production. Its modern factory is furnished with advanced CNC machining centers and large vertical lathes, enabling a large production scale and precise, efficient processes.
In R&D, the company has strong 2D and 3D design capabilities. A professional team delves into advanced gate valve technologies, optimizing designs through simulation to enhance performance.
The experienced production team follows standardized procedures to turn designs into high-quality products. The proficient sales team, with in-depth product knowledge, offers customized solutions for global customers. This integration from R&D to after-sales guarantees a continuous supply of top-notch gate valves.