Hayward TC10100STE PVC True Check Valve - 1 inch Socket x Threaded EPDM

What This Part Is Used For
The Hayward TC10100STE is a PVC true check valve used to prevent backflow in pool and spa plumbing lines. It is listed as 1 inch socket by threaded with EPDM sealing. This valve is installed where one way flow is required to protect equipment or maintain line prime.

Why This Part Matters
Backflow can cause lines to drain down, introduce air, and create inconsistent startup flow. A functioning check valve helps prevent reverse circulation that can affect chlorination and equipment protection. When a check valve fails, you may see air in the system or water moving the wrong way after shutdown. Replacing the correct 1 inch valve restores predictable flow control.

Key Features and Specifications

• Manufacturer part number: TC10100STE
• PVC true check valve
• Connection: 1 inch socket x threaded
• Seal material listed: EPDM
• Used to prevent backflow in pool plumbing

Installation and Fitment Guidance
Install with the flow arrow oriented correctly and confirm line size matches the 1 inch connection. Use appropriate sealing method on the threaded side and allow cure time on glued joints. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward produces a complete pool equipment ecosystem including pumps, filters, heaters, automation, cleaners, chlorination equipment, and service parts. Their valves and plumbing components integrate with common residential pad layouts for consistent flow control. This system compatibility helps protect equipment and simplify troubleshooting. Hayward parts are widely supported across the pool industry.

Common Service Context
Techs typically replace smaller check valves on spa return lines, chemical feed lines, or feature circuits where backflow causes air and drainage issues. It is often identified by rattling internals, reverse flow symptoms, or a valve that will not seal shut.