Medium & High Pressure Check Valves
Medium and High Pressure O-Ring Sealed Check Valves, 10C, 15C, 20C, and 60C Series
10C, 15C, 20C, and 60C Series O-Ring Sealed Check Valves feature a resilient O-ring seat design, ensuring noise-free closing and reliable reverse flow prevention. They offer a maximum working pressure of 60,000 psig (4137 bar) with cracking pressures ranging from 14 psig to 26 psig (0.97 bar to 1.79 bar). These valves provide unidirectional flow and tight shut-off for liquids and gases with high reliability. Various connection types and sizes are available.
Features
Cracking pressure: 14 psig~26 psig (0.97 bar~1.79 bar)
Resilient O-ring seat design ensures noise-free closing and reliable reverse flow prevention
Fluorocarbon FKM O-ring for operation from 0°F to 400°F (-17.8°C to 204°C); other materials of O-rings available
Provide unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure, valve shuts off (not for use as relief valve)
Medium and High Pressure Metal-Seated Check Valves, 10CO, 15CO, 20CO, and 60CO Series
10CO, 15CO, 20CO, and 60CO Series Metal-Seated Ball Check Valves, designed for high pressure working conditions, feature an integral ball and poppet design that ensures positive, in-line seating without “chatter.” The maximum working pressure is up to 60,000 psig (4137 bar). The poppet design is optimized for axial flow with minimal pressure drop. Optional materials for the cover and ball poppet are available for extended life. Various connection types and sizes are offered.
Features
Prevent reverse flow where leak-tight shut-off is not mandatory (not for use as relief valve)
Optional materials of cover and ball poppet for longer life
An integral design of the ball and poppet to assure positive, in-line seating without “chatter”. Poppet designed essentially for axial flow with minimum pressure drop
Subsea O-Ring Sealed Check Valves, 10SC, 15SC, and 20SC Series
10SC, 15SC, and 20SC Series Subsea O-Ring Sealed Check Valves, designed for subsea applications, these valves are made from high-tensile 316 stainless steel with a maximum working pressure of up to 20,000 psig (1379 bar) and a maximum water depth of 13,800 ft (4200 m). Featuring a soft seat seal ring for tight shut-off, these valves are ideal for gaseous media. They are highly resistant to corrosion and meet NACE MR0175 requirements. Various connection types and sizes are offered.
Features
Working pressure up to 20,000 psig (1379 bar)
Maximum external pressure: 6,000 psig (414 bar)
Cracking pressure: 14 to 26 psig (0.97 to 1.79 bar)
NBR O-ring for operation from -10 to 250°F (-23 to 121°C); other O-ring materials available
High tensile 316 stainless steel for valve body
NACE MR0175 optional
Soft seat seal ring style or metal-to-metal seat poppet style available
Maximum water depth: 13,800 ft. (4200 m)
Provides unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure, valve shuts off (not for use as relief valve)
Subsea Metal-Seated Check Valves, 10SCO, 15SCO, and 20SCO Series
10SCO, 15SCO, and 20SCO Series Subsea Metal-Seated Check Valves are specifically designed for subsea environments and feature a high-tensile 316 stainless steel valve body. They offer a maximum working pressure of up to 20,000 psig (1379 bar) and a maximum water depth of 13,800 ft (4200 m). The metal-to-metal seat poppet design is suitable for fluid media and is unaffected by media temperature. These valves provide exceptional corrosion resistance and meet NACE MR0175 requirements. Various connection types and sizes are offered.
Features
Working pressure up to 20,000 psig (1379 bar)
Maximum external pressure: 6,000 psig (414 bar)
Cracking pressure: 14 to 26 psig (0.97 to 1.79 bar)
NBR O-ring for operation from -10 to 250°F (-23 to 121°C); other O-ring materials available
High tensile 316 stainless steel for valve body
NACE MR0175 optional
Soft seat seal ring style or metal-to-metal seat poppet style available
Maximum water depth: 13,800 ft. (4200 m)
Provides unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure, valve shuts off (not for use as relief valve)
Medium pressure check valves，20CG Series
The 20CG Series medium pressure check valves are specifically designed for hydrogen refueling and testing applications, with a maximum working pressure of up to 20,000 psig (1,379 bar). The check valves employ a sealing structure featuring a metal cone and a PEEK valve seat, ensuring reliable performance under high-pressure and high-flow gas conditions, making them particularly suitable for hydrogen refueling operations. Each valve undergoes internal and external leakage testing with a mixed gas of helium and nitrogen at 10,150 psig (700 bar) before shipment.
Features
PEEK seat offers exceptional wear resistance and excellent hydrogen compatibility
Metal cone to PEEK seating design ensures reliable performance under high-pressure and high-flow conditions, making it particularly suitable for hydrogen fueling applications
Mountable in any direction
Proportional sampling helium leak tested to a leak rate of ≤1×10-6 Ncm3/s
Each valve is tested for internal and external leakage using a helium-nitrogen gas mixture at 10,150 psig (700 bar) before shipment
