10-Pack POM One-Way Shower Check Valve Anti-Backflow Gaskets

Stop Backflow in Its Tracks — Reliable One-Way Valve Gaskets for Your Shower & Plumbing System

Keep your water flowing in the right direction with these POM Shower Check Valve Gaskets. Designed for use with shower heads, mixing valves, and a wide range of plumbing fittings, this 10-pack gives you everything you need to prevent unwanted backflow and maintain consistent water direction throughout your system. Whether you're upgrading an existing setup or tackling a new install, these compact, durable gaskets deliver dependable one-way flow control every time.

Key Features

• Effective Anti-Backflow Design: The one-way non-return valve mechanism ensures water travels only in the intended direction, preventing siphoning and cross-contamination in your plumbing system.
• Durable Rubber + POM Construction: Built from a combination of rubber and high-strength POM (polyoxymethylene) plastic, these valves are engineered to resist wear, handle high-pressure conditions, and maintain a long service life.
• Two Sizes Available: G1/2 (18.5 × 14.8 × 13mm) and G3/4 (24 × 15 × 16mm) — suitable for both standard and larger hose or hard pipe connections.
• Easy Installation: Compact dimensions allow for quick, seamless integration with compatible hoses or hard pipes without the need for specialist tools.
• Versatile Compatibility: Works with mixing valves, shower valves, shower heads, embedded spring check valve accessories, and rotary check valves — a flexible solution for a range of plumbing configurations.
• White + Black Color: Clean, neutral color scheme blends neatly with standard plumbing components.
• 10 Pieces Included: Great value pack — keep spares on hand for future maintenance or replacements.

Specifications

Package Contents

• 10 × POM One-Way Check Valve Gaskets

Note: Please allow 1–5mm variance due to manual measurement. Monitor color calibration may cause slight color differences from the actual product — please use the real item as the reference standard.

Related Plumbing & Home Products

• 1-1/4" Adjustable Washbasin Siphon Trap | Leak-Proof Silicone
• 1-Inch Threaded Brass Ball Valve – Water, Gas & Oil Flow Control

For more information on safe plumbing practices and backflow prevention, visit the U.S. Environmental Protection Agency – WaterSense Program.

Frequently Asked Questions

Q: What sizes are the POM check valve gaskets available in?

A: These check valve gaskets come in two sizes: G1/2 (18.5 × 14.8 × 13mm) and G3/4 (24 × 15 × 16mm), making them compatible with both standard and larger shower and plumbing fittings.

Q: What plumbing applications are these one-way check valves compatible with?

A: These POM shower check valves are designed to work with shower heads, mixing valves, shower valves, embedded spring check valve accessories, and rotary check valves. They fit both hose and hard pipe connections of the appropriate diameter.

Q: Why do I need a check valve or anti-backflow gasket in my shower system?

A: A one-way check valve prevents water from flowing backwards through your plumbing — this stops siphoning, protects against cross-contamination between hot and cold lines, and ensures reliable, consistent water flow direction in your shower or mixing valve system.

Q: How many pieces are included in this pack?

A: Each order includes 10 individual POM check valve gaskets, giving you plenty for your current installation plus spares for future maintenance or replacement needs.