Check Valve, 1/2"FNPT x 1/2"FNPT

U.S. Solar Mounts

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685 Check Valve
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Product Overview

These 685 series check valves can be used for a wide range of air and fluid applications.

  • Polypropylene Body
  • Cracking pressure: 1/3 psi
  • 302 SS spring
  • FKM seals
  • High flow rate
  • Seat area open diameter: .438"; Positive seal at very low back pressure or slight vacuum
  • Check mechanism: Disc poppet
  • Maximum pressure: 125 psi
  • Maximum temperature: 140°F
  • Dimensions: 2.50" L x 1.75" W


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