---
product_id: 325473010
title: "Silent Check Valve - 1-1/2\" with Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit 1-1/2″ Pipe"
brand: "pumpspy"
price: "€ 40.68"
currency: EUR
in_stock: true
reviews_count: 13
category: "Pump Spy"
url: https://www.desertcart.pt/products/325473010-silent-check-valve-1-1-2-with-buna-n-couplings
store_origin: PT
region: Portugal
---

# Silent spring-loaded flapper Clear valve body for visual flow check Includes stainless steel clamps & Buna-N couplings Silent Check Valve - 1-1/2" with Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit 1-1/2″ Pipe

**Brand:** pumpspy
**Price:** € 40.68
**Availability:** ✅ In Stock

## Summary

> 🔇 See the flow, hear the silence — upgrade your sump pump game!

## Quick Answers

- **What is this?** Silent Check Valve - 1-1/2" with Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit 1-1/2″ Pipe by pumpspy
- **How much does it cost?** € 40.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/325473010-silent-check-valve-1-1-2-with-buna-n-couplings)

## Best For

- pumpspy enthusiasts

## Why This Product

- Trusted pumpspy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Performance:** Highly rated with 4.7 stars from nearly 2,000 users—join the savvy homeowners upgrading their sump systems.
- • **Pump Longevity Booster:** Prevents water backflow, reducing pump strain and extending sump pump life expectancy.
- • **Effortless Installation:** Comes with durable stainless steel clamps and flexible Buna-N couplings for quick setup on 1-1/2" pipes.
- • **Whisper-Quiet Operation:** Eliminates disruptive water hammer noise for a peaceful home environment.
- • **Visual Flow Confirmation:** Transparent valve body lets you instantly verify pump activity and pipe clarity.

## Overview

The PumpSpy Silent Check Valve Model CV-150 is a 1-1/2" submersible valve featuring a spring-loaded flapper that eliminates water hammer noise, a clear ABS body for visual flow monitoring, and comes with stainless steel clamps and Buna-N couplings for easy installation. Designed to prevent water backflow, it extends sump pump life and ensures quiet, reliable operation.

## Description

PumpSpy's Silent Sump Pump Check Valve brings quiet operation and visibility to your sump pump system. This check valve is designed to allow maximum water flow from your pump. The clear valve body shows if water is moving and the pump works as designed. The spring-loaded flapper keeps the operation quiet, with no jarring water hammer noises. Our sump pump check valves are made with easy installation in mind and come with stainless steel clamps and Buna-N couplings that fit 1-1/2″ pipe. This sump pump check valve can quietly prevent water from being pumped twice and extend the life of a pump. Product Specs: Model: CV-150, 1 1/2 inch check valve, spring-loaded flapper Dimensions: 8.5 x 3 x 3 inches; Weight: 12.8 ounces.

Review: Value product easy install - Easy quick install valve works like a charm and silent. Competitive pricing quick shipping appears to be quality product too early to rate durability good vendor would definitely repurchase if needed.
Review: Very good! - I installed these on my two sump pumps and immediately noticed a difference! No more thumping and gurgling. These valves are super easy to install, are whisper quiet and perform flawlessly! Being able to actually see the valve operate is also a big plus! Very pleased with this purchase and would highly recommend!

## Features

- QUIET OPERATION: Our sump pump check valve has a unique spring-loaded flapper that helps eliminate the water hammer noise that standard check valves produce. The water hammer noise occurs when the discharged water slams the check valve flapper down. This silent check valve can bring a quiet operation to your sump pump.
- CLEAR VALVE BODY: This check valve will provide visibility to water movement. With the valve's clear body, it's easy to visually confirm that pumped contents are moving, the pipes are not clogged, and the pump in the basin is fully operational.
- INCLUSIONS: Our silent sump pump check valve comes with stainless steel clamps and Buna-N rubber couplings for quick installation. The clamps and couplings fit a 1-1/2" Schedule 40 pipe. Fits within a 5-1/8" gap.
- KEEP WATER OUT: This check valve is designed to keep pumped water within the discharge pipe from falling back into the sump basin. A fully functional sump pump check valve can increase pump life expectancy by preventing water from being pumped twice.
- ABOUT US: PumpSpy provides sump pump systems that help eliminate the unknowns of a sump outage and prevents costly damage. We also offer Smart Sump Pump Systems that automatically track incoming data and check that a sump pump is working properly.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B091V15RHZ |
| Best Sellers Rank | #9,467 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Check Valves |
| Brand | PumpSpy |
| Brand Name | PumpSpy |
| Color | Clear |
| Customer Reviews | 4.7 out of 5 stars 1,950 Reviews |
| Global Trade Identification Number | 00850004841143 |
| Included Components | Silent Check Valve |
| Item Dimensions L x W x H | 8.5"L x 3"W x 3"H |
| Item Weight | 0.8 Pounds |
| Manufacturer | Raybend |
| Manufacturer Part Number | 93100-01 |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Model Number | CV-150 |
| Power Source | No Power Source |
| Product Dimensions | 8.5"L x 3"W x 3"H |
| Product Style | Submersible |
| Specific Uses For Product | Basement sump pump systems |
| Style | Submersible |

## Product Details

- **Brand:** PumpSpy
- **Color:** Clear
- **Global Trade Identification Number:** 00850004841143
- **Item Weight:** 0.8 Pounds
- **Manufacturer:** Raybend
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Power Source:** No Power Source
- **Product Dimensions:** 8.5"L x 3"W x 3"H
- **Style:** Submersible

## Images

![Silent Check Valve - 1-1/2" with Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit 1-1/2″ Pipe - Image 1](https://m.media-amazon.com/images/I/71lB0cGelrL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Value product easy install
*by W***E on March 16, 2026*

Easy quick install valve works like a charm and silent. Competitive pricing quick shipping appears to be quality product too early to rate durability good vendor would definitely repurchase if needed.

### ⭐⭐⭐⭐⭐ Very good!
*by J***R on March 15, 2026*

I installed these on my two sump pumps and immediately noticed a difference! No more thumping and gurgling. These valves are super easy to install, are whisper quiet and perform flawlessly! Being able to actually see the valve operate is also a big plus! Very pleased with this purchase and would highly recommend!

### ⭐⭐⭐⭐⭐ Quite Quiet
*by D***! on March 2, 2026*

This thing works so well I had to double-check it was actually on. It’s impressively quiet—like ninja-level quiet. If it were any quieter, I’d be wondering whether it was powered by thoughts and prayers instead of actual engineering. Build quality is solid and feels made to last, with a secure fit and no leaks. The clear housing is great too—it lets you peek inside like you’re inspecting a tiny science experiment, except everything is working exactly as it should (a rare joy). Easy to install, whisper-silent in operation, and rock-solid performance. Honestly, the loudest thing about this item is me telling other people how good it is. Highly recommend.

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**Shop now:** [https://www.desertcart.pt/products/325473010-silent-check-valve-1-1-2-with-buna-n-couplings](https://www.desertcart.pt/products/325473010-silent-check-valve-1-1-2-with-buna-n-couplings)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-22*