1/4" FNPT x 1/4" FNPT Series 694 Black Polypropylene Check Valve with EPDM Seals, 1/3 psi Cracking Pressure & 302 SS Spring

1/4" FNPT x 1/4" FNPT Series 694 Black Polypropylene Check Valve with EPDM Seals, 1/3 psi Cracking Pressure & 302 SS Spring

Item 22637

9.02/Each

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Overview

The 694 Series is the most compact valve in the family, built with 1/4" NPT ports and a Cv of 2.3. Ideal for small-diameter applications, it delivers precise control and low-pressure sealing with disc poppets. Its modular design has a 302 stainless steel spring and EPDM seal, and its rugged polypropylene construction handles pressures up to 125 psi. It's a dependable choice for OEM systems, lab setups, or compact process applications.

Polypropylene
EPDM seals
302 SS spring
High flow rate
Seat area open diameter: 0.438"
Positive seal at very low back pressure or slight vacuum
Cracking pressure: 1/3 psi
Check mechanism: Disc poppet
Maximum pressure: 125 psi
Maximum temperature: 140°F

Item Information

Item Number: 22637

Catalog Page Number: P-529

Manufacturer: SMC

Manufacturer Part #: 6940190

Country of Origin: USA

Tech Specs

Material: Polypropylene

Connection: FNPT x FNPT

Size: 1/4"

Seal: EPDM

Weight: 0.05 lbs

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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