| Size: | |
|---|---|
| Availability: | |
| Quantity: | |
Forged Steel Globe Valve
J-VALVES
Structural Features
F304L Stainless Steel Material: The valve body is forged from F304L stainless steel, featuring high strength and good corrosion resistance. It can resist the erosion of various chemical media, extending the valve's service life.
Extended Stem Design: The extended stem design provides additional operating space, facilitating operation and maintenance in low-temperature environments while reducing operating torque.
Low-Temperature Sealing Design: Low-temperature-specific sealing materials are adopted to ensure sealing performance in extremely low-temperature environments and prevent medium leakage.
RF Flange Connection: The RF (Raised Face) flange connection method is used, complying with the ASME B16.5 standard, which ensures reliable installation and sealing performance.
Fire-Safe Design: It complies with the API 607 standard. Even in the event of a fire, the valve can maintain its sealing performance, prevent medium leakage, and ensure system safety.
Anti-Static Device: A built-in anti-static device effectively prevents static accumulation, reducing the risk of fire and explosion. It is particularly suitable for controlling flammable and explosive media.
Compact Design: With a small volume and light weight, it is easy to install and integrate into existing systems, saving space.
Multiple Operation Modes: It can be equipped with manual, pneumatic, electric, or hydraulic actuators to realize remote automated control.
Technical Specifications
Nominal Diameter:1/2″ to 2″ (DN15 to DN50)
Pressure Rating:150LB to
Temperature Range: -196℃ to +200℃
Materials:
Valve Body: F304L Stainless Steel
Disc: F304L Stainless Steel
Stem: F304L Stainless Steel
Sealing Material: PTFE, RPTFE
Connection Method: RF Flange Connection (complying with ASME B16.5 standard)
Operation Mode: Manual, Pneumatic, Electric, Hydraulic
Design Standards: API 600, ASME B16.34
Testing Standards: API 598, ISO 5208
Fire-Safe Design: API 607
Applicable Media: Low-temperature media such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), liquid oxygen, and liquid nitrogen
Application Scenarios
Oil and Gas Industry: Used in storage and transportation systems for liquefied natural gas (LNG) and liquefied petroleum gas (LPG) to ensure reliable isolation and control of media.
Chemical Industry: Suitable for transportation and reaction systems of various low-temperature chemical media, preventing medium leakage and ensuring production safety.
Pharmaceutical Industry: Applied in low-temperature pipeline systems during pharmaceutical production to ensure medium isolation and cleanliness in the drug manufacturing process.
Food and Beverage Industry: Meets food-grade requirements and is used in low-temperature pipeline systems for food and beverage production, ensuring hygiene and safety.
HVAC: Used in cooling water systems, hot water systems, etc., to ensure efficient operation of the system.
General Industrial Applications: Suitable for the control and isolation of media such as water, oil, and gas.
Advantages and Value
High Reliability: The F304L stainless steel material and extended stem design ensure the valve operates stably in extremely low-temperature environments, reducing maintenance frequency and downtime.
High Safety: The fire-safe and anti-static designs, along with reliable sealing performance, effectively reduce leakage risks and protect the safety of personnel and equipment.
Automated Operation: Multiple actuator options enable remote control and automated operation, enhancing the flexibility and safety of the system.
Easy Installation and Maintenance: The RF flange connection simplifies the installation process and facilitates maintenance and overhaul.
Wide Applicability: Multiple material options and a broad range of pressure and temperature ratings allow it to adapt to various complex working conditions and medium characteristics.
Competitive Advantage:
On Samples Buyer bear the air fee, but this fee will be reduced from order directly
On After Sales Free replacement if there is any quality problem
On Delivery Never delay delivery time
On Materials Ensure material pure
Ensure material pure

Flash vessel design and flash steam recovery: flash fraction formula, Souders-Brown sizing, hold-up, LP header and deaerator routing, failure diagnosis.
Wet shaft and dry shaft butterfly valves: what reaches the bearing, which part wears first, and why the disc stops centering in the bore.
Steam trap selection: float, inverted bucket, thermodynamic and thermostatic types, sized on load times safety factor at true differential pressure.
Between the handle and the ball there are four fits. Which one shears, which one cracks, and how a few degrees of lost motion hides a valve that never seated.
Reverse flow through a check valve has six mechanical causes. How hinge wear, debris and a moved seat ring look different, and which test finds each.
Trapped-liquid overpressure in DBB/DIB ball valves: thermal expansion arithmetic, SPE vs DPE seats, external cavity relief valve setting and the fire case.
API 598 test durations by size, why the timer starts after the pressure settles, and what a 1.5 times shell test cannot tell you about service.
Pneumatic actuator failure modes and field diagnostics: air supply quality, diaphragm rupture, spring relaxation, torque margins and partial stroke testing.
How a butterfly valve disc is fixed to its stem: taper pins, pinless hubs and through shafts, the backlash each allows, and the failures they cause.
Steam PRV station design: critical pressure ratio, Kv sizing, 1/3-2/3 parallel turndown, series stations and safety valve sizing rules.
Why LNG ball valve seats that pass warm tests leak cold at -162°C: contraction arithmetic, cold preload, PCTFE vs PTFE, ISO 28921-2 and MSS SP-134 limits.
What API 607 proves: burn sequence, 7th-edition leak limits per NPS, cavity pressure rules, API 6FA vs ISO 10497, and the clauses buyers must check.
MSS SP-80 bronze valves: the class number is a saturated steam rating, not a pressure rating. Alloys, threads, lead-free rules and where bronze stops.
Stellite or tungsten carbide for erosive service: erosion angles, hardness ratios, HVOF vs weld overlay, the 500 C limit, and the clauses that win acceptance.
Valve coating is a defect-budget decision, not a product choice: ENP vs FBE vs sprayed aluminium, holiday arithmetic, CUI and the specs that win acceptance.
Temporary and start-up strainers for commissioning: placement, plate versus mesh, blowdown discipline and the removal record that proves it was pulled.
What MSS SP-25 marking really commits to: body symbols, three-symbol trim marking, melt identification and the certificate that closes the loop.
Why ball valves pass high-pressure seat tests and fail at 0.6 MPa: seat preload arithmetic, SPE and DPE seats, DBB vs DIB-1/DIB-2, and test-proofing specs.
RF, RTJ and butt-weld valve ends compared: how each joint seals, which duty suits it, and the four assembly errors that cause most joint leaks.
Why PTFE and PFA liners fail when the chemistry is right: permeation arithmetic, vacuum collapse, cold flow and the 11:1 expansion mismatch at the flange.