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  • 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.

Product Image- SMC Polypropylene Check Valves
smc695SpecSht
Unit of Measure
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Item #

End Connection Size 1

End Connection Size 2

Seals

Spring

Price

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WFPCHK685-8F8M-F,DP,1/3# N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 1/3 psi - 302 Stainless (Disc Poppet) $6.52
WFPCHK685-8F8M-F,DP,1/3#,HAST N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 1/3 psi - Hastelloy (Disc Poppet) $6.52
WFPCHK685-8F8M-F,NO SPRING N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A No Spring $6.52
WFPCHK685-8F8M-F,OP N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 1 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,12#,HAST N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 12 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,3# N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 3 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,3#,HAST N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 3 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,7# N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 7 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,7#,HAST N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 7 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8M-F,OP,HAST N/A 1/2 Female NPT N/A 1/2 Male NPT N/A Viton® N/A 1 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,DP,1/3# N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 1/3 psi - 302 Stainless (Disc Poppet) $6.52
WFPCHK685-8F8F-F,DP,1/3#,HAST N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 1/3 psi - Hastelloy (Disc Poppet) $6.52
WFPCHK685-8F8F-F,NO SPRING N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A No Spring $6.52
WFPCHK685-8F8F-F,OP N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 1 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,12#,HAST N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 12 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,3# N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 3 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,3#,HAST N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 3 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,7# N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 7 psi - 302 Stainless (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,7#,HAST N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 7 psi - Hastelloy (O-Ring Poppet) $6.52
WFPCHK685-8F8F-F,OP,HAST N/A 1/2 Female NPT N/A 1/2 Female NPT N/A Viton® N/A 1 psi - Hastelloy (O-Ring Poppet) $6.52
FPCHK685-8M8M-F,DP,1/3# N/A 1/2 Male NPT N/A 1/2 Male NPT N/A Viton® N/A 1/3 psi - 302 Stainless (Disc Poppet) $10.64
FPCHK685-8M8M-F,DP,1/3#,HAST N/A 1/2 Male NPT N/A 1/2 Male NPT N/A Viton® N/A 1/3 psi - Hastelloy (Disc Poppet) $10.64
FPCHK685-8M8M-F,NO SPRING N/A 1/2 Male NPT N/A 1/2 Male NPT N/A Viton® N/A No Spring $10.64
FPCHK685-8M8M-F,OP N/A 1/2 Male NPT N/A 1/2 Male NPT N/A Viton® N/A 1 psi - 302 Stainless (O-Ring Poppet) $10.64
FPCHK685-8M8M-F,OP,12#,HAST N/A 1/2 Male NPT N/A 1/2 Male NPT N/A Viton® N/A 12 psi - Hastelloy (O-Ring Poppet) $10.64
Unit of Measure
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