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White CPVC inline check valve with threaded socket ends and union nuts

HAYWARD POOL PRODUCTS INC

HAYWARD POOL PRODUCTS INC TC20100ST 1 in CPVC Check Valve Trap

SKU CH-VC5F-1Z4X3 MPN TC20100ST

A 1-inch CPVC inline check valve with true-union connections, Viton seals, 18 gpm flow and a 3 psi cracking pressure, rated to 235 psi at 70 °F and operational from 40 °F to 190 °F

  • TypeDrain Components
  • MaterialHAWA
  • Prevents backflow with 3 psi cracking pressure
  • Handles 18 gpm flow rate at full capacity
  • CPVC body resists corrosion in pool systems
  • Viton seals perform from 40 to 190 Degrees F
  • Rated for 235 psi at 70 Degrees F

Purpose-built flow control

The Hayward TC20100ST is a 1-inch CPVC check valve designed for pool and spa plumbing. It stops reverse flow automatically, protecting pumps and filters from back-pressure damage. The true-union body lets installers remove the valve without cutting pipe, saving labour on service calls.

CPVC body with Viton seals

CPVC construction resists corrosion from chlorinated water and handles temperatures from 40 to 190 degrees Fahrenheit. Viton seat and seal material withstand chemical exposure without degrading. The FNPT threaded inlet and socket outlet accept standard schedule-40 fittings, while the 3 psi cracking pressure opens reliably under low-head conditions.

Replaces worn swing or spring checks

Swapping a failed swing check for this inline true-union model eliminates hinge wear and reduces water hammer. The upgrade is worthwhile when the existing valve leaks, chatters or requires pipe cutting for removal. It is not suited for steam lines or horizontal runs where gravity cannot assist closure.

Highlights

  • Prevents backflow with 3 psi cracking pressure
  • Handles 18 gpm flow rate at full capacity
  • CPVC body resists corrosion in pool systems
  • Viton seals perform from 40 to 190 Degrees F
  • Rated for 235 psi at 70 Degrees F

Specifications

TypeDrain Components
MaterialHAWA
BrandHayward
ModelTC20100ST

Questions about this item

What does the 3 psi cracking pressure mean for the CPVC check valve?

The valve opens when upstream pressure exceeds 3 psi, allowing flow in one direction only.

What pipe size and connection types does the TC20100ST require?

It fits 1 in pipe with FNPT threaded and socket connections on a true union body.

How should the check valve be oriented during installation?

Mount it vertically so the internal mechanism operates correctly with gravity.

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