Valve Industry Knowledge Base

Check Valves

Series 581 Long Pattern Flanged Check Valve
581 Check Valve

581 PDF Brochure

Click on the product image or click here to see specifications in .pdf format.   

  • Check valve with 150# Long Pattern Flanged Ends connections.
  • Available in flat face (F) or raised face (R) styles.
  • Available body materials: Carbon Steel and 316 Stainless Steel.
  • Available internals materials: Stainless Steel and Aluminum. 
  • Standard available seals: Buna-N, EPDM, Viton, and Silicone. 
  • Maximum working pressure: 200 PSI.
  • Operating temperature range: –100° to +500°.
  • Custom material configurations, sizes and pressure ratings are available; please consult the factory for all custom orders.

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