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White PVC inline check valve with threaded FNPT connections

HAYWARD POOL PRODUCTS INC

HAYWARD POOL PRODUCTS INC TC10037T 3/8" FNPT PVC Check Valve trap

SKU CH-1PGQ-555Y5 MPN TC10037T

PVC inline check valve with Viton seals, 3/8" FNPT connections, 4 gpm flow, 150 psi at 70°F, 40–140°F range

  • TypeDrain Components
  • MaterialHAWA
  • Inline true-union design simplifies maintenance
  • Viton seals resist chemicals from 40 to 140 Degrees F
  • 3 psi cracking pressure ensures reliable flow control
  • Rated 150 psi at 70 Degrees F for pool systems
  • PVC body with FNPT connections fits 3/8 in piping

PVC inline check valve for pool plumbing

This 3/8" FNPT PVC check valve installs vertically in pool and spa circulation lines to prevent backflow when the pump stops. The true-union body allows quick removal for cleaning or winterising without cutting pipe. Viton seals and seat resist chlorine and common pool chemicals across the rated temperature range.

Rated flow and pressure headroom

The valve passes up to 4 gpm with a low 3 psi cracking pressure, so it opens easily on typical residential filter pumps. Maximum water pressure is 150 psi at 70 °F, giving margin above normal operating pressures. It is not rated for steam service and the minimum fluid temperature is 40 °F.

True-union build and vertical mounting

The inline true-union design uses FNPT threads on both ends for direct connection to 3/8" female fittings. Vertical orientation is required for the internal mechanism to seat correctly by gravity. PVC body and Viton seals handle continuous exposure to treated water up to 140 °F without corrosion or seal degradation.

Highlights

  • Inline true-union design simplifies maintenance
  • Viton seals resist chemicals from 40 to 140 Degrees F
  • 3 psi cracking pressure ensures reliable flow control
  • Rated 150 psi at 70 Degrees F for pool systems
  • PVC body with FNPT connections fits 3/8 in piping

Specifications

TypeDrain Components
MaterialHAWA
BrandHayward
ModelTC10037T

Questions about this item

Will the 3/8" FNPT threads connect to my existing 3/8" male NPT fittings?

Yes, the valve has 3/8" FNPT x FNPT connections that accept standard male NPT threads.

How can I confirm the check valve is operating correctly after installation?

Flow water through the valve; it should open at 3 psi cracking pressure and allow up to 4 gpm with no backflow.

Does the TC10037T include union nuts or solvent-weld adapters in the box?

The valve ships as a true-union inline body with Viton seals; union nuts and any transition fittings are sold separately.

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