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Bronze inline spring check valve with FNPT ends

Simmons

Simmons 506SB bronze spring check valve 2 psi cracking pressure

SKU CH-J1XC-FCA41

Bronze inline spring check valve with 2 psi cracking pressure, rated 400 psi water at 190 Degrees F

  • Bronze body resists corrosion for long service life
  • Spring-loaded inline design prevents backflow automatically
  • 2 psi cracking pressure opens at low flow conditions
  • Rated to 190 °F and 400 psi water pressure
  • Horizontal or vertical mounting fits any installation

Bronze spring check valve 2 psi

The Simmons 506SB is a 2-inch FNPT inline check valve built for general-purpose plumbing. Its bronze body and Buna-N seal suit water lines up to 400 psi and 190 °F, while the stainless-steel spring cracks at 2 psi to prevent back-flow.

Thermals noise and power draw

The valve operates passively with no electrical supply, so it generates no heat, noise or power draw. Flow resistance is limited to the spring cracking pressure and the inline bronze seat, keeping pressure drop predictable in normal service.

Build quality and mounting

Bronze construction and a stainless-steel spring resist corrosion in potable and non-potable water systems. The 3 1/4-inch face-to-face length fits standard 2-inch NPT piping, and the design allows horizontal or vertical installation without extra brackets.

Highlights

  • Bronze body resists corrosion for long service life
  • Spring-loaded inline design prevents backflow automatically
  • 2 psi cracking pressure opens at low flow conditions
  • Rated to 190 °F and 400 psi water pressure
  • Horizontal or vertical mounting fits any installation

Specifications

BrandSIMMONS

Questions about this item

How do I install the Simmons 506SB bronze spring check valve and which orientation step is often missed?

Thread the 2-inch FNPT connections into the pipeline using pipe sealant; the valve accepts horizontal or vertical mounting but the spring must point upward in vertical runs so the disc can close by gravity.

What maintenance or replacement will the Simmons 506SB bronze spring check valve need over time?

Inspect the Buna-N seat and bronze body for wear or debris each season; replace the valve if the stainless-steel spring loses tension or the seal no longer holds at 2 psi cracking pressure.

What pressure limit appears first on the Simmons 506SB bronze spring check valve during sustained operation?

The 400 psi maximum water-pressure rating is the governing limit; steam service is not rated and the 190 °F temperature ceiling must also be observed.

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