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J-VALVES
Structural Features
Stainless Steel F304 Material:The valve body is precision cast of ASTM A351 CF8 (F304) austenitic stainless steel, delivering outstanding corrosion resistance, oxidation resistance and stable mechanical properties. It fits various corrosive media and sanitary service conditions, with higher cost efficiency than F316.
Two-Piece Body Design:The valve body consists of left and right sections fastened by bolts. Featuring compact layout and light weight, it supports online maintenance and overhaul, enabling replacement of internal components including ball and seat without full valve disassembly, thus shortening equipment downtime.
Floating Ball Design:The ball floats freely under medium pressure and closely fits against the valve seat to form reliable sealing. Sealing relies on seat preload under low pressure; medium pressure augments sealing tightness at high pressure to realize self-tight sealing. This structure features simple construction and dependable sealingperformance.
Flanged End Connection:RF raised-face flanged connection complies with ASME B16.5 standard. Class 600 pressure rating guarantees installation stability and sealing integrity under high-pressure working conditions, facilitating integration with existing piping systems.
Fire-Safe Construction:Compliant with API 607 standard, the valve adopts metal-to-metal contact as backup fire-safe sealing. It retains sealing capacity even during fire accidents to stop medium leakage.
Anti-Static Device:Built-in anti-static springs and steel balls continuously conduct static electricity among ball, stem and body, lowering fire and explosion risks and meeting usage requirements for hazardous areas.
Blowout-Proof Stem Design:The stem adopts bottom-mounted blowout-proof structure equipped with shoulder and retaining ring. The structure prevents stem ejection caused by abnormal internal pressure and ensures operational safety.
ISO 5211 Top Flange:The stem top is fitted with ISO 5211 standard flange interface (available in F03/F04/F05 sizes). Pneumatic actuators, electric actuators and manual gearboxes can be directly mounted for remote control and automatic operation.
Compact & Lightweight Design:The small-bore two-piece structure is compact and ultra-light, suitable for installation in space-limited locations and reducing piping support load.
Technical Parameters
Nominal Size: 0.5" (DN15)
Pressure Class: ANSI Class 600 (PN100)
Temperature Range: -29℃ ~ +425℃
Body/Bonnet: ASTM A351 CF8 (F304), CF8M (F316), CF3 (304L), CF3M (316L)
Ball: ASTM A182 F304, F304 with ENP (Electroless Nickel Plating), F316, F316 with ENP
Stem: ASTM A182 F304, F316, 17-4PH, XM-19 (Nitronic 50)
Seat Seal: PTFE (standard), RPTFE (reinforced), NYLON, PEEK, metal hard seal (Stellite / nickel-based alloy)
O-Ring: NBR, EPDM, FFKM (Perfluoroelastomer), low-temperature HNBR
Packing: PTFE, flexible graphite, graphite reinforced with nickel wire
Gasket: 304 flexible graphite spiral wound gasket; RTJ metal ring gasket (optional)
End Connection: Flanged RF (ASME B16.5); RTJ flange optional; threaded NPT/BSP, socket weld SW, butt weld BW available as options
Operation Type: Manual (lever/worm gear), pneumatic (double acting / spring return single acting), electric, hydraulic
Design Standards: API 608, ASME B16.34
Testing Standard: API 598
Face-to-Face Dimension: Compliant with ASME B16.108
Application Fields
High-Pressure Washing Systems:Used for medium regulation of industrial high-pressure water jet and steam cleaning equipment to withstand high-pressure erosion.
Hydraulic & Pneumatic Systems:Provides reliable shutoff and flow direction control for high-pressure hydraulic oil, compressed air and nitrogen pipelines.
Semiconductor & Electronics Industry:Applied in high-pressure delivery pipelines for ultrapure water, high-purity gas and corrosive chemicals.
Cryogenic Storage & Transportation Systems:F304 material enables high-pressure shutoff control for cryogenic media including liquid nitrogen, liquid oxygen and liquid argon.
General Industrial Service:Realizes stable high-pressure isolation for water, oil, gas, steam, chemicals and other media, serving as critical shutoff equipment for small-bore high-pressure pipelines.
Advantages & Value
Optimized for Small-Bore High-Pressure Service:The compact 1/2-inch structure matched with Class 600 high-pressure rating is customized for low-flow high-pressure conditions with minimal footprint.
Excellent Anti-Corrosion Performance:F304 austenitic stainless steel resists numerous corrosive media, applicable to wide corrosive environments covering chemical, marine, food industries and more.
Floating Ball Self-Tight Sealing:Sealing performance improves with rising medium pressure; the design delivers high reliability and easy maintenance with simple configuration.
light & flexible operation:Small-bore floating ball features extremely low operating torque for effortless lever operation, supporting frequent opening/closing and fast response.
Convenient Installation & Maintenance:Two-piece design allows internal component replacement without removing the valve from pipelines; flanged connection simplifies installation and inspection; compact layout cuts piping support cost.
Easy Automation Integration:ISO 5211 standard top flange matches miniature pneumatic and electric actuators for convenient remote control and automatic upgrading.
Wide Application Coverage:Optional diverse materials, sealing styles, pressure classes and end connections cover extensive working conditions ranging from cryogenic to high temperature, vacuum to ultrahigh pressure, inert fluid to corrosive media.
Full Compliance with International Standards:Designed and manufactured strictly in accordance with international standards including API 608, ASME and ISO to satisfy global project procurement demands. Complete documentation is supplied, including EN 10204 3.1/3.2 material certificates, test reports and NACE compliance certificates.
