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One-inch brass inline spring check valve with FNPT connections

Campbell

Campbell 1" FNPT Low Lead Brass Spring Check Valve bathware

SKU CH-XXEW-DJRDM

A 1" FNPT low-lead brass inline spring check valve rated for 18 gpm at 200 psi with a 0.5 psi cracking pressure and NBR seals operating from 35 °F to 158 °F

  • Size1"
  • TypeOther
  • Low cracking pressure of .5 psi for easy opening
  • 18 gpm flow capacity supports strong water delivery
  • Brass body with bronze seat resists corrosion
  • Spring-loaded inline design works in horizontal or vertical mounting
  • Operates from 35 to 158 °F and up to 200 psi water pressure

Campbell 1" FNPT Low Lead Brass Spring Check Valve

This Campbell check valve controls one-directional flow in plumbing systems using a 1-inch FNPT connection. It is built for installers who need a low-lead brass body rated for potable water applications. The inline spring mechanism allows installation in horizontal or vertical orientations without affecting operation.

Spring mechanism and NBR seal change

The stainless steel spring opens at a cracking pressure of .5 psi and the NBR seal closes tightly against the bronze seat to prevent backflow. This combination delivers a flow capacity of 18 gpm while keeping the valve sealed across a temperature range of 35 to 158 degrees Fahrenheit and a maximum water pressure of 200 psi. Steam service is not rated.

Simple threaded installation avoids common leaks

The valve threads directly onto 1-inch FNPT pipe ends without special tools, and the spring-loaded design tolerates both horizontal and vertical mounting. Leaks usually come from insufficient thread sealant or from exceeding the 200 psi water-pressure limit, so confirm system pressure before tightening.

Highlights

  • Low cracking pressure of .5 psi for easy opening
  • 18 gpm flow capacity supports strong water delivery
  • Brass body with bronze seat resists corrosion
  • Spring-loaded inline design works in horizontal or vertical mounting
  • Operates from 35 to 158 °F and up to 200 psi water pressure

Specifications

BrandCAMPBELL
Size1"
TypeOther

Questions about this item

How often should the NBR seal or stainless-steel spring be inspected or replaced on this 1" FNPT check valve?

The NBR seal and stainless-steel spring are rated for continuous service between 35 and 158 degrees F at up to 200 psi water pressure; inspect during routine plumbing maintenance and replace if leakage or reduced flow appears.

What pressure or temperature limit will be reached first when this valve runs continuously at full flow?

The 200 psi maximum water-pressure rating and 158 degrees F maximum temperature rating define the operating envelope; sustained flow of 18 gpm stays within both limits as long as supply conditions do not exceed them.

Does the inline spring mechanism create noticeable noise or heat when the valve stays open all day?

The spring-assisted inline design operates silently with no external power draw; the brass body and NBR seal dissipate normal water-temperature heat without measurable temperature rise.

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