---
product_id: 339444842
title: "John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf"
brand: "john guest"
price: "191.42 DT"
currency: TND
in_stock: true
reviews_count: 5
url: https://www.desertcart.tn/products/339444842-john-guest1cm-one-way-cheque-valve-ro-reverse-osmosis-water
store_origin: TN
region: Tunisia
---

# NSF certified 1cm flow control Easy installation John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf

**Brand:** john guest
**Price:** 191.42 DT
**Availability:** ✅ In Stock

## Summary

> 💦 Quench your thirst for quality!

## Quick Answers

- **What is this?** John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf by john guest
- **How much does it cost?** 191.42 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/339444842-john-guest1cm-one-way-cheque-valve-ro-reverse-osmosis-water)

## Best For

- john guest enthusiasts

## Why This Product

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

## Key Features

- • **Certified Quality:** NSF certification guarantees safety and reliability.
- • **User-Friendly Setup:** Installation made simple—no professional help needed!
- • **Mess-Free Experience:** We handle the cleanup, so you don’t have to!
- • **Reliable Performance:** Ensures optimal water flow with a 1cm valve.
- • **Seamless Integration:** Effortlessly connects to your existing plumbing.

## Overview

The John Guest 1cm One Way Cheque Valve is designed for reverse osmosis water filtration systems, ensuring a seamless connection to your plumbing while maintaining optimal water flow. With NSF certification, this valve guarantees safety and reliability, making it a must-have for any water treatment setup.

## Description

John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf

## Features

- Part #: 3/8SCV
- Installing 1 customer-supplied water treatment unit
- Connecting unit to existing plumbing
- Testing unit functionality
- Cleaning up any mess and debris

## Images

![John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf - Image 1](https://m.media-amazon.com/images/I/71XOSGsKWmL.jpg)
![John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf - Image 2](https://m.media-amazon.com/images/I/71B+puePHML.jpg)
![John Guest1cm One Way Cheque Valve Ro Reverse Osmosis Water Filter Nsf - Image 3](https://m.media-amazon.com/images/I/716SD8s2c1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    John Guest is the best
  

*by G***L on Reviewed in the United States on 15 February 2024*

John Guest is by far the best of this type of fitting. I have used them for years professionally. These check valves will not disappoint.

### ⭐⭐⭐⭐⭐ 







  
  
    Great
  

*by A***R on Reviewed in the United Kingdom on 15 November 2020*

Just what we needed for our milk vending machine

### ⭐⭐⭐⭐ 







  
  
    Good little sucker
  

*by J***S on Reviewed in the United States on 2 June 2022*

I use this to replace the valve on my water aeration system. The check valve is fine and it does not leak however when the system is running and it's sucking air through it and makes an annoying vibrating noise that the old one didn't make but at least it doesn't leak

## Frequently Bought Together

- John Guest 3/8SCV 3/8" Push Fit Single Check Valve, Non Return Valve (Speedfit)
- John Guest PPSV041212WP Plastic Push Shut Off Valve, White, 3/8 in. Tube OD
- John Guest 15mm x 3/8" Straight Connector

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/339444842-john-guest1cm-one-way-cheque-valve-ro-reverse-osmosis-water](https://www.desertcart.tn/products/339444842-john-guest1cm-one-way-cheque-valve-ro-reverse-osmosis-water)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-02*