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Small 316 stainless steel inline swing check valve with FNPT threads, .5 psi cracking pressure

Value Brand

Value Brand 1/4" NPT 316 Stainless Steel Swing Check Valve .5 psi

SKU CH-5551-ZPG7Z

Inline swing check valve in 316 stainless steel with PTFE seal, 0.5 psi cracking pressure and 200 psi rating up to 350 °F

  • TypeOther
  • Prevents backflow with inline swing mechanism
  • 316 stainless steel body resists corrosion
  • PTFE seal handles 350 °F max temperature
  • Rated for 200 psi water and steam pressure
  • Opens at .5 psi cracking pressure

1/4" NPT 316 Stainless Swing Check Valve

This 1/4-inch NPT swing check valve uses 316 stainless steel construction for corrosion resistance. A PTFE seal handles temperatures from -4 to 350 degrees Fahrenheit. The valve opens at a low .5 psi cracking pressure and suits horizontal mounting.

Inline flow control for water and steam lines

The FNPT x FNPT connections thread directly into existing piping without extra adapters. Rated for 200 psi water and 200 psi steam, it prevents backflow in hydronic or process systems. Horizontal orientation keeps the swing mechanism operating freely.

Replaces worn brass or lower-grade steel checks

Upgrading to 316 stainless extends service life in aggressive fluids or high-temperature steam. The jump is worth it when PTFE sealing and .5 psi cracking pressure are required for reliable low-head operation. Not for vertical flow paths or applications needing spring-assisted closure.

Highlights

  • Prevents backflow with inline swing mechanism
  • 316 stainless steel body resists corrosion
  • PTFE seal handles 350 °F max temperature
  • Rated for 200 psi water and steam pressure
  • Opens at .5 psi cracking pressure

Specifications

BrandZORO SELECT
TypeOther

Questions about this item

How does the .5 psi cracking pressure affect flow under sustained use?

The valve opens with only .5 psi of forward pressure, so it begins passing flow almost immediately and does not create a noticeable restriction during continuous operation.

Will the PTFE seal and 316 stainless body handle the 350 °F temperature limit all day without excess heat or noise?

PTFE remains stable up to the rated 350 °F, and the swing mechanism operates silently; the valve body itself does not generate heat, so sustained service at the temperature limit is within design parameters.

What pipe thread do I need on my existing piping for this valve to connect?

The valve has 1/4 inch FNPT threads on both ends, so your piping must provide matching 1/4 inch MNPT connections for a direct fit.

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