Zoeller 30-0048 — 2″ Quiet Check Valve

The Zoeller 2″ Quiet Check Valve (Model 30-0048) is engineered to prevent backflow and minimize system noise in sump and sewage pump installations. Its quiet, spring-loaded flapper design helps eliminate the loud “water hammer” effect, making it a reliable solution for residential, commercial, and light industrial applications that demand smooth and silent operation.

Key Features & Benefits

• Quiet Operation: Spring-assisted flapper reduces water hammer and discharge line noise
• Prevents Backflow: Maintains system integrity and protects your pump from reverse flow damage
• Durable Construction: Designed for long-term performance in demanding pump environments
• Full-Flow Design: Minimizes restriction for maximum pump performance
• Easy Installation: Compatible with standard 2″ discharge plumbing
• Designed for horizontal and vertical installation

Perfect For

• Sump pump systems
• Sewage pump systems
• Any 2″ discharge line requiring backflow prevention
• Reducing loud pipe noise and vibration

Specifications

Model	30-0048
Size	2″
Type	Quiet check valve
Connection	2″ line — sump & sewage applications
Function	Backflow prevention / noise reduction

 

Common Questions

Q: Will this stop water hammer noise?
A: Yes. The spring-loaded flapper significantly reduces pipe noise compared to standard check valves.

Q: What pipe size is this compatible with?
A: The valve is designed for use with 2″ discharge plumbing.

Q: Can this be used on a sewage system?
A: Yes. It is approved for both sump and sewage pump applications.