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Your cart is empty.Inline Poppet Check Valve 685 Series PP 1/2 FPT - BUNA 6850090. The 685 Series Inline Poppet Check Valve 1/2 FPT: The 685 Series Inline Poppet Check Valve 1/2 FPT: The 685 Series Poppet Check Valve Prevents reverse flow and incorporates a thin elastomer disc supported by a poppet that seals on the seat. Pressure in the flow direction moves the seal off the seat first before pressure builds enough to move the poppet away from the seat. The 685 Series Check Valve maximum operating pressure of 125 psi covers a wide range of air and fluid applications. The 685 Check is a compact design with a light cracking pressure high flow rate and a positive seal at very low back pressure or slight vacuum. For higher cracking pressure applications an embedded o-ring poppet is substituted for the standard elastomer disc poppet. Material Polypropylene Body & Poppet Black. Custom order: White Seal Buna-N. Custom order: Ethylene Propylene or Fluoroelastomer (Viton) Inlet x Outlet 1/2 Female NPT X 1/2 Female NPT 1/2 Female NPT x 1/2 Male NPT 1/2 Male NPT x 1/2 Female NPT 1/2 Male NPT x 1/2 Male NPT Cracking Pressure 302 Stainless Spring @ 1/3 psi. Custom order:1 3 7 psi or Hastelloy Spring @ 1/3 1 3 psi. 685 Series FP CHK 685-8F8F-B Check Valves check valve inline check valve female check valve female threaded check valve smc BUNA check valve PVC check valve 685 series check valve
Felipe Betancourt
September 6, 2025
Súper para instalar
Timothy D.
September 3, 2025
Couldn’t ask for a better part. Great for my softwash setup
JOHN MATTHEWS
August 19, 2025
Great price, arrived quickly and seem to perform as described.
franky manzanas
July 14, 2025
Trabajan bien pero se parten muy rápido. El muelle se rompe.Gracias
francesco
May 30, 2025
Easy to use
AutoDude
May 27, 2025
Awesome, fits perfectly!
sekou
May 24, 2025
. I havent used it has yet as am disappointed that its plastic. I had planned to add it to my diesel fuel line but am not sure as to the strength of the plastic over whatever period of time. I am thin6that it may leak or break down over time causing fire.
Melissa Wilson
December 12, 2024
They keep cracking. One was barely screwed in and it literally ripped in half.
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