1-1/2" PVC Quiet Check Valve with Union, Solvent Weld

Zoeller 1-1/2" Quiet Check Valve – Noise-Reducing Backflow Protection for Sump and Sewage Systems

The Zoeller Quiet Check Valve is a high-performance solution designed to prevent backflow in sump and sewage pump systems while significantly reducing operational noise. Featuring a spring-loaded internal flapper and full-port design, this valve ensures smooth, unrestricted flow and minimizes water hammer during pump shutoff.

Constructed from heavy-duty PVC, the Quiet Check Valve is suitable for use in both horizontal and vertical discharge lines. It offers fast, secure installation with union ends and solvent-weld slip connections, eliminating the need for threaded fittings and making servicing easier.

Key Features

• 1/2 lb Spring-Loaded Flapper – Damps water hammer, reduces vibration, and prevents reverse flow during pump cycles.
• Full-Port Internal Design – Allows maximum water flow and minimizes pressure drop for efficient system operation.
• Durable PVC Body – Corrosion-resistant construction suited for residential and light commercial pump applications.
• Versatile Positioning – Designed for both vertical and horizontal installations in discharge lines.
• Union x Slip Connections – Simplifies installation and future maintenance without requiring threaded pipe.

Technical Specifications

• Valve Size: 1-1/2” nominal
• Material: PVC (white body)
• Connection Type: Solvent weld slip x slip with union ends
• Pressure Rating: 50 psi maximum
• Temperature Limit: 130°F (consult factory for applications above this)
• Length: 9-1/2 inches
• Country of Origin: USA

Installation Considerations

This valve is engineered for easy solvent-weld installation, but proper alignment and support are critical for long-term reliability. For best results and to meet local code requirements, installation should be completed by a licensed plumber. Ensure that pump head and discharge line lengths are correctly matched to reduce operational wear and maximize efficiency.

Contractor Advantages

• Field-Tested Design: Trusted by contractors for its quiet operation and consistent backflow protection.
• Tool-Free Servicing: Union ends allow for fast removal without cutting pipe.
• Non-Clogging Performance: Internal geometry is optimized for debris resistance in graywater and sump systems.

Professional-Grade Backflow Solution

Whether you're outfitting a new sump pump system or retrofitting an older line, the Zoeller Quiet Check Valve delivers dependable performance and quiet operation. Built for efficiency, longevity, and simplified service, it’s an essential component for any contractor working in wastewater management.