---
product_id: 101660182
title: "PP Shut Off Valve Connection 12 mm (One Supplied)"
brand: "john guest"
price: "£9.38"
currency: GBP
in_stock: true
reviews_count: 13
category: "John Guest"
url: https://www.desertcart.co.uk/products/101660182-pp-shut-off-valve-connection-12-mm-one-supplied
store_origin: GB
region: United Kingdom
---

# 12 mm precision fit Enhanced chemical resistance Polypropylene durability PP Shut Off Valve Connection 12 mm (One Supplied)

**Brand:** john guest
**Price:** £9.38
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your flow game with precision and durability!

## Quick Answers

- **What is this?** PP Shut Off Valve Connection 12 mm (One Supplied) by john guest
- **How much does it cost?** £9.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/101660182-pp-shut-off-valve-connection-12-mm-one-supplied)

## 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

- • **EPDM O-Rings Seal:** Premium sealing technology for zero drip confidence
- • **Compact & Lightweight:** Easy to install and handle without bulk or fuss
- • **Chemical-Resistant Design:** Outperforms acetal valves in harsh environments
- • **Robust Polypropylene Build:** Engineered for long-lasting durability and corrosion resistance
- • **Seamless 12 mm Speedfit Connection:** Effortless, leak-proof integration with your existing system

## Overview

The John Guest PP Shut Off Valve Connection 12 mm offers a reliable, quick-connect solution crafted from durable polypropylene with EPDM O-rings, ensuring superior chemical resistance and leak-free performance. Perfect for professional-grade plumbing setups, it delivers hassle-free installation and long-term reliability in a compact design.

## Description

Product Description Why Choose JG Speedfit? JG Speedfit push-fit plumbing and heating • Install, demount and refit in seconds without tools • Safer and cleaner with no hot works, flux or glue • Less labour-intensive, especially in tight spaces • Non-toxic, resists corrosion and scale build-up • High performance leakproof connections / compatible with plastic or copper pipe How to make a connection - Standard Fittings Standard Fittings Push pipe up to Pipe Stop. If the Speedfit pipe has been cut correctly the insertion mark on the pipe will be level with the collet head Pull to check connection is secure and test the system Twist & Lock Fittings Twist the screwcap until it touches the body flange. This increases the O-Ring seal around the pipe and locks the pipe into position If you are not using collet clips, ensure that the screwcaps are in the locked position. Pull to check it is secure Premium Piece On every product John Guest Speedfit make, you’ll find the JG monogram proudly stamped, as a mark of trusted authenticity and quality. All their products are pressure and temperature tested to ensure they meet and exceed exacting industry standards.

Review: Love JG Speedfit. Used as isolator in my camper pressurised water systems - Positive shut off tap. Fits well and easily with no leaks. I have fitted it near the pump using 12mm JG Speedfit pipes, as an isolator in the pressure water system. It allows me to shut off in the event of a leak downstream of my pump.
Review: Good product - Good product

## Features

- MATERIAL: Polypropylene construction with EPDM O-rings
- SIZE: 12 mm connection diameter
- CONNECTION: Speedfit to Speedfit system
- CHEMICAL PROPERTIES: Enhanced chemical resistance compared to acetal
- QUANTITY: 1 valve per package

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B012O9AMCA |
| Best Sellers Rank | 5,322 in Garden ( See Top 100 in Garden ) 107 in Garden Hose Parts & Connectors |
| Brand | John Guest |
| Colour | Blue, White |
| Connector Type | Quick Connect |
| Connector type | Quick Connect |
| Customer Reviews | 4.6 out of 5 stars 223 Reviews |
| Exterior Finish | White |
| Item Dimensions | 30 x 42 x 65 millimetres |
| Item Weight | 0.02 Kilograms |
| Item dimensions L x W x H | 30 x 42 x 65 millimetres |
| Manufacturer | John Guest |
| Material | Polypropylene |
| Model Number | PPMSV041212W |
| Number of Pieces | 1 |
| Part Number | PPMSV041212W |
| Size | Piccolo |
| Thread Size | 12 mm |
| Thread Type | UN |
| UPC | 665626118807 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** John Guest
- **Colour:** Blue, White
- **Connector type:** Quick Connect
- **Exterior finish:** White
- **Item dimensions L x W x H:** 30 x 42 x 65 millimetres
- **Item weight:** 0.02 Kilograms
- **Material:** Polypropylene
- **Size:** Piccolo
- **Thread size:** 12 mm
- **Thread type:** UN

## Images

![PP Shut Off Valve Connection 12 mm (One Supplied) - Image 1](https://m.media-amazon.com/images/I/51D+hG7sEHL.jpg)
![PP Shut Off Valve Connection 12 mm (One Supplied) - Image 2](https://m.media-amazon.com/images/I/41-ENXvxLiL.jpg)

## Questions & Answers

**Q: can i attach to 12mm copper pipe**
A: This valve is suitable to use with soft metal pipes such as copper.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love JG Speedfit. Used as isolator in my camper pressurised water systems
*by T***S on 19 August 2025*

Positive shut off tap. Fits well and easily with no leaks. I have fitted it near the pump using 12mm JG Speedfit pipes, as an isolator in the pressure water system. It allows me to shut off in the event of a leak downstream of my pump.

### ⭐⭐⭐⭐⭐ Good product
*by D***N on 1 May 2026*

Good product

### ⭐⭐⭐⭐⭐ 12mm Shut off Valve. Push Fit
*by H***2 on 6 November 2024*

I needed a replacement shut off valve after the old one on my motorhome siezed, and the operating lever smapped off. when I tried to open it, This unit is a straighforward replacement and a simple push fit onto the existing 12mm plastic pipes. The freshwater tank can be fully drained when required. Just the job.

## Frequently Bought Together

- John Guest PP Shut Off Valve Connection 12 mm (One Supplied)
- John Guest 12mm Equal Elbow Push-Fit Pipe Connector – Quick Connect Fitting for Water & Air Systems (Pack of 4)
- 12mm John Guest Inserts (Pack of 50)

---

## 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.co.uk/products/101660182-pp-shut-off-valve-connection-12-mm-one-supplied](https://www.desertcart.co.uk/products/101660182-pp-shut-off-valve-connection-12-mm-one-supplied)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*