CP Series Poppet Check Valves, 1/4 in MNPT x 1/4 in MNPT, 316 SS, Cv: 0.35, Cracking Pressure: 1 psig

Brand
Ssp Fittings Corp
Brand
SSP Fittings Corp
Pack Size
1.00
UOM
EA
Supplier Part Number
4CP4PM-1-316
Product Weight
0.09 lbs

Product Questions & Answers

got a line running 1/4 inch male NPT on both ends and need a check valve that won't slam shut on me at low pressure. this one gonna work for that?
Question by: Melvin B on May 18, 2025, 8:28 PM
A 1 psig cracking pressure is about as low as you'll find on a poppet-style check valve, so it opens up real easy without needing much pressure behind it. Both ports are 1/4 in MNPT, so it'll thread right into a standard 1/4 in female NPT fitting on each end. The 316 stainless steel body holds up well where moisture or mild corrosives are a concern. Just keep in mind the Cv is 0.35, which means flow capacity is on the modest side, so it's best suited for lower-flow applications rather than high-volume lines.
Answer by: Customer Support on May 20, 2025, 6:21 AM
What's the deal with the cracking pressure on this check valve? One PSI, that right?
Question by: Rex M on May 27, 2025, 8:04 AM
Correct, the cracking pressure is one psig. This means it will start to open and allow flow when the pressure reaches one pound per square inch.
Answer by: Customer Support on May 28, 2025, 1:24 PM