• The 685/687 series polypropylene check valve operates in any position, horizontal or vertical.
  • Standard cracking pressure less than 1psi with a maximum operating pressure of 125psi and a maximum operating temperature of 140 °F.
  • Buna-N seals standard, ethylene propylene or fluroelastomer seals available.
  • Easily disassembled for repair or replacement of seals.
  • Stainless steel spring, with guided propylene poppet.Hastelloy springs available. Black polypropylene is standard. Please specify white polypropylene if needed.

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Item #

End Connection Size 1

End Connection Size 2

Seals

Spring

Price

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N/A 1/2 Male NPT N/A 1/2 Female NPT N/A EPDM N/A 7 psi - 302 Stainless (O-Ring Poppet) $20.19 Add To Cart
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N/A 1/2 Male NPT N/A 1/2 Male NPT N/A AFLAS® N/A 1/3 psi - 302 Stainless (Disc Poppet) $20.19 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 1/3 psi - 302 Stainless (Disc Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 1/3 psi - Hastelloy (Disc Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A No Spring $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 1 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 12 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 3 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 3 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 7 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 7 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A AFLAS® N/A 1 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 1/3 psi - Hastelloy (Disc Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A No Spring $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 1 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 12 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 3 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 3 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 7 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 7 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Buna-N N/A 1 psi - Hastelloy (O-Ring Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A EPDM N/A 1/3 psi - 302 Stainless (Disc Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A EPDM N/A 1/3 psi - Hastelloy (Disc Poppet) $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A EPDM N/A No Spring $10.64 Add To Cart
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N/A 1/2 Female NPT N/A 1/2 Female NPT N/A EPDM N/A 1 psi - 302 Stainless (O-Ring Poppet) $10.64 Add To Cart
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