Model 220B-1PP Check Valve

0-3000 PSIG Check Valve


Circle Seal Controls Model 220B-1PP Check Valve

Catalog literature: Check Valves Catalog.pdf Acrobat DC

The Circle Seal Controls model 220B-1PP Check Valve is constructed in Brass with Teflon seals, has 1/8″ FNPT connections, and is rated for 0-3000 PSIG service.

How it Works

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

Technical Data:

  • Operating pressure: 0 to 3,000 psig
  • Proof pressure: 1.5X operating pressure
  • Rated burst pressure: 2.5:1
  • Body material: Brass
  • Seal material: Teflon
  • Connections: 1/8″ FNPT
  • Temp range: -100 to +400F
  • Cracking pressure: 8 psig max
  • Cv: 1.6

Dimensions (in inches):

  • “A” dimension (length): 1.70″
  • “C” dimension (hex & diameter): 0.81″
  • “D” dimension (diameter): N/A
  • “E” dimension (distance between wrench flats): N/A
  • Weight (lbs.): 0.14

220B-1PP Check Valve