Product Description
Fluid Protection Controls 259S-4PP Check Valve
The model 259S-4PP Check Valve is constructed in Steel with Buna seals, has 1/2″ FNPT connections, and is rated for 0-3000 PSIG service
Features & Benefits:
- Zero leakage: Circle Seal check valves are absolutely bubble-tight in leakage tests
- Quick opening / positive closing: Even at extremely low pressure differential; opening pressures are as low as 0.1 PSIG; the poppet closes at zero flow before return flow starts.
- Maintenance free dependability: The resilient o-ring absorbs the shock and automatically compensates for normal wear; there are no special seats which require replacing or resurfacing
- Excellent flow characteristics: The streamlined poppet and full ports offer minimum restriction to flow; the spring retainer has ample ports to allow full flow even when surge pressure forces the poppet against the stop
- No “chatter” or “hammer”: The pulsating action of shock waves and hammer is absorbed by minor expansion and contraction of the o-ring; the use of the resilient o-ring seal, together with the careful poppet design, insures cushioned, quiet closing
- Satisfactory performance under adverse conditions: Foreign particles in the fluid stream do not prevent proper sealing; temperature variations do not affect proper functioning of the valve; can be supplied to withstand temperatures from -320 to +400F.
- Adaptable to most fluids: Metallic and non-metallic parts can be supplied to withstand the action of most commonly used exotic fluids; no special wear resisting materials are required, eliminating the problems of differential expansion and electolytic action from dissimilar metals
- Compact and easily installed: Efficient straight-line design reduces weight and size; permits mounting in any position; all valves are marked with an arrow to indicate the direction of flow
