1/4" FNPT x 1/4" FNPT Series 694 Polypropylene Check Valve w/ FKM Seals | 1/3 PSI Cracking Pressure & Hastelloy Spring

Product Description This 1/4" FNPT x 1/4" FNPT Series 694 Check Valve ensures a reliable seal with FKM seals and a pressure range of 1/3 PSI. The polypropylene body and Hastelloy spring make for a durable and long-lasting solution for 1/4" applications. These 694 series check valves can be used for a wide range of air and fluid applications. Polypropylene FKM seals Hastelloy Spring High flow rate Seat area open diameter: 0.438" Positive seal at very low back pressure or slight vacuum Check mechanism: Disc poppet Cracking pressure: 1/3 psi Maximum pressure: 125 psi Maximum temperature: 140°F