PSB Check Valve
9 products found
A PSB check valve (Pressure Seal Bonnet check valve) is a heavy-duty, self-actuating non-return valve engineered for absolute backflow prevention in high-pressure, high-temperature utility lines across the power generation, oil and gas, and chemical processing sectors. Utilizing a self-energizing metal-to-metal sealing structure, the internal bonnet is forced tighter against a wedged gasket as system pipeline pressure escalates, completely eliminating joint relaxation and fugitive emissions common in traditional bolted-bonnet designs under severe thermal cyclic stress. Piping design engineers and utility operators can optimize fluid loops and ensure reliable high-pressure backflow isolation by importing certified PSB check valves directly from specialized manufacturers in China via our advanced B2B commercial platform.
Weldon
Pressure Sealed Bonnet Lift Check Valve, A105N, 1 Inch, 2500 LB, RF
Model Number: FCV-04
Weldon
Y Pattern check valve, PSB, A182 F304, 1/2 Inch, Class 2500, BW End
Model Number: FCV-05
Baltic Valve Co., Ltd.
Forged Steel PSB Swing Check Valve, ASTM A105N, 1 Inch, 2500 LB, RF
Baltic Valve Co., Ltd.
PSB Swing Check Valve, 3 Inch, CL900, ASTM A105N, RF Ends
Baltic Valve Co., Ltd.
ASTM A105N Lift Check Valve, PSB, 1 Inch, 1500 LB, RF
Baltic Valve Co., Ltd.
3 Inch Lift Check Valve, ASTM A105N, 1500 LB, RF Flanged
Baltic Valve Co., Ltd.
ASTM A182 F321 Swing Check Valve, 1 IN, CL2500, API 602
Wenzhou Unique Valve Co., Ltd.
API 602 Check Valve
medvalve
PSB Swing Check Valve, 10 Inch, Class 2500, RTJ, A216 WCB
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