---
product_id: 10542980
title: "John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP"
brand: "john guest"
price: "R448"
currency: ZAR
in_stock: true
category: "John Guest"
url: https://www.desertcart.co.za/products/10542980-john-guest-3-8-inch-o-d-tube-size-x
store_origin: ZA
region: South Africa
---

# Leak-free push-to-connect Tool-free twist-lock install FDA & NSF certified safety John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP

**Brand:** john guest
**Price:** R448
**Availability:** ✅ In Stock

## Summary

> 🚿 Upgrade your flow game with leak-free confidence!

## Quick Answers

- **What is this?** John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP by john guest
- **How much does it cost?** R448 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/10542980-john-guest-3-8-inch-o-d-tube-size-x)

## 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

- • **Trusted Longevity:** Backed by a 25-year warranty, built to last and keep your system leak-proof.
- • **Behind-the-Wall Ready:** Certified for permanent, leak-free connections in concealed plumbing applications.
- • **Effortless Installation:** Twist-and-lock design means no tools, glue, or soldering—get it done in seconds.
- • **High-Pressure Performance:** Rated for up to 150 PSI at 70°F, ensuring reliable shut-off under demanding conditions.
- • **Premium Food-Grade Materials:** Crafted from durable polypropylene with EPDM O-rings, safe for potable water and hydronic systems.

## Overview

The John Guest 3/8 Inch O.D. Tube x 1/4 Inch NPTF Female Shut-Off Valve is a high-quality, tool-free push-to-connect plumbing fitting made from FDA-compliant polypropylene and food-grade EPDM O-rings. Rated for 150 PSI at 70°F, it offers durable, leak-free performance ideal for potable water and hydronic heating systems, with certifications for behind-the-wall installation and a 25-year warranty.

## Description

Product Description Simplify your plumbing projects with the John Guest female shut-off valve. Made from polypropylene, this push-to-connect fitting requires no tools or glue for a secure, leak-free connection. This plumbing shut-off valve is fitted with food-grade EPDM O-rings and is FDA-compliant. These safe and durable shut-off valves are approved for behind-the-wall applications as a permanent leak-free connection and are certified for use in potable water and hydronic heating system applications. John Guest plastic push female angle shut-off valves are rated at 150 PSI at 70 degrees Fahrenheit and 60 PSI at 140 degrees Fahrenheit. From the Manufacturer JG Speedfit is the easy to use, plastic push-fit system suitable for the plumbing of hot and cold water services and heating applications.

## Features

- JOHN GUEST FEMALE SHUT-OFF VALVE: This John Guest female shut-off valve is manufactured in white polypropylene and fitted with food-grade EPDM O-rings; suitable for use with 3/8 inch plastic or soft copper tubing
- EASY TO INSTALL: The twist-and-lock feature of this female angle shut-off valve allows for quick and easy installation, with no tools, crimping, glue, or soldering required
- SAFE, DURABLE, AND HIGH QUALITY: This female shut-off valve is durable and non-toxic; provides excellent chemical resistance; FDA-compliant and NSF 61 and 51 certified
- PREFERRED BY THE PRO: These shut-off valves are for use with potable water; approved for behind-the-wall applications as a permanent leak-free connection
- SPECS: John Guest plastic shut-off valve fittings are rated at 150 PSI at 70 degrees Fahrenheit and 60 PSI at 140 degrees Fahrenheit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003YKF2GU |
| Best Sellers Rank | #40,805 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,086 in Pipe Fittings |
| Brand Name | John Guest |
| Connector Type | Shut-Off Valve |
| Customer Reviews | 4.6 4.6 out of 5 stars (869) |
| Exterior Finish | Plastic |
| Global Trade Identification Number | 00665626120015 |
| Included Components | Valve |
| Inlet Connection Size | 0.38 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 11 x 10 x 4 inches |
| Item Type Name | Push-Fit Elbow Shut-Off Valve |
| Item Weight | 5 g |
| Manufacturer | John Guest Speedfit |
| Manufacturer Part Number | PPSV501222WP |
| Manufacturer Warranty Description | 25 Years |
| Material Type | Plastic |
| Maximum Pressure | 150 psi |
| Model Number | PPSV501222WP |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 0.38 inches |
| Outlet Connection Type | NPTF |
| Size | 3/8 in. OD x 1/4 in. NPTF |
| Specification Met | NSF 61, NSF 51 |
| Thread Size | 0.25 inch |
| Thread Type | NPTF |
| UPC | 665626120015 |
| Unit Count | 1 Count |
| Valve Type | Shut-Off Valve |

## Product Details

- **Brand:** John Guest
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 0.38 inches
- **Inlet Connection Type:** National Pipe Tapered
- **Item dimensions L x W x H:** 11 x 10 x 4 inches
- **Material:** Plastic
- **Maximum Operating Pressure:** 150 psi
- **Number of Ports:** 1
- **Outlet Connection Size:** 0.38 inches
- **Outlet Connection Type:** NPTF

## Images

![John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP - Image 1](https://m.media-amazon.com/images/I/61Y0vnoABIL.jpg)
![John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP - Image 2](https://m.media-amazon.com/images/I/41v-U0W+9mL.jpg)
![John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP - Image 3](https://m.media-amazon.com/images/I/41jef3-tDgL.jpg)

## Available Options

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

## Questions & Answers

**Q: Cant find the right size! i need the threaded female end to be 3/8 npt and the tube end 1/4 od. can anyone help?**
A: This may or may not help you. But all tanks that have a small threaded outlet are 1/4" if you measure it it will actually measure close to 3/8 but they call it 1/4NPT. As far as I know they do not make a tank shutoff with 3/8NPT threads

**Q: So the outlet of this valve is a 1/4" id and 3/8" od correct?  So 1/4" pex will fit in the outlet as a press fit?**
A: No.  Pex is considered as the same size as copper. 1/4 pex is equal to 5/16" OD or 1/4 CTS

**Q: wjhich way does the valve point when in the on position?**
A: When the valve is open the blue tab is pointing to the fitting on the side, when closed it is 90 degrees to the fitting.

**Q: Will this work on a pureblueh2o tank? the tank looks similar with a 1/4" thread. that system uses a compression nut which is flimsy and leak-prone.**
A: These are classified as universal

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-08-31*