---
product_id: 99749253
title: "John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack"
brand: "jg speedfit"
price: "$338.62"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/99749253-john-guest-speedfit-psei6012u9-push-fit-female-connector-reducing-coupling
store_origin: EC
region: Ecuador
---

# Tool-free push-fit ease Twist-lock leak-proof seal FDA & NSF certified safety John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack

**Brand:** jg speedfit
**Price:** $338.62
**Availability:** ✅ In Stock

## Summary

> 🔧 Snap, seal, and forget—plumbing made effortlessly professional!

## Quick Answers

- **What is this?** John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack by jg speedfit
- **How much does it cost?** $338.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/99749253-john-guest-speedfit-psei6012u9-push-fit-female-connector-reducing-coupling)

## Best For

- jg speedfit enthusiasts

## Why This Product

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

## Key Features

- • **Bulk 10-Pack Value:** Stock up and stay ahead with a convenient multi-pack for all your projects
- • **Behind-the-Wall Ready:** Approved for permanent, hidden installations with a reliable twist-lock 🔗
- • **Instant Push-Fit Connection:** No tools needed—snap and secure in seconds ⚡
- • **Durable Chemical-Resistant Build:** Polypropylene ensures long-lasting, odorless, tasteless performance
- • **Certified Safe for Drinking Water:** FDA-compliant and NSF 61/51 approved for peace of mind 🛡️

## Overview

The John Guest Speedfit PSEI6012U9 is a 10-pack of push-fit female reducing couplings (3/8 OD x 9/16 UNEF) made from durable polypropylene. Designed for quick, tool-free installation, these fittings are FDA-compliant, NSF certified, and approved for permanent behind-the-wall use with a secure twist-lock mechanism, ensuring leak-free, chemical-resistant connections ideal for professional and home plumbing projects.

## Description

John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack

## Features

- NO TOOLS REQUIRED: Push-to-connect fittings provide a simple, quick, reliable, leak-free connection with no tools required
- DURABILITY: Provides excellent chemical resistance
- SAFE: FDA-compliant material; NSF 61 and 51 certified
- SECURE: Approved for behind-the-wall applications as a permanent leak-free connection. Twist and lock feature.
- QUALITY: durable, odorless, tasteless, and non-toxic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polypropylene |
| Brand | JG Speedfit |
| Color | White |
| Item dimensions L x W x H | 1.51 x 0.8 x 0.8 inches |
| Connector Type | Coupling |
| Thread Size | 3/8 |
| Thread Type | UNEF |
| Item Weight | 0.04 Pounds |
| Number of Pieces | 10 |
| Global Trade Identification Number | 00665628043275 |
| Manufacturer | Reliance Worldwide Corporation |
| UPC | 665628043275 |
| Part Number | PSEI6012U9 |
| Item Weight | 0.592 ounces |
| Product Dimensions | 1.51 x 0.8 x 0.8 inches |
| Item model number | PSEI6012U9 |
| Installation Method | Push-Connect |
| Item Package Quantity | 1 |
| Measurement System | inch |
| Included Components | Bag of 10 Fittings |
| Batteries Required? | No |
| Warranty Description | 12 Months |

## Product Details

- **Material:** Polypropylene
- **Brand:** JG Speedfit
- **Color:** White
- **Item dimensions L x W x H:** 1.51 x 0.8 x 0.8 inches
- **Connector Type:** Coupling
- **Thread Size:** 3/8
- **Thread Type:** UNEF
- **Item Weight:** 0.04 Pounds
- **Number of Pieces:** 10
- **Global Trade Identification Number:** 00665628043275

## Images

![John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack - Image 1](https://m.media-amazon.com/images/I/513lIqE6VjL.jpg)
![John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack - Image 2](https://m.media-amazon.com/images/I/51qIlQou8dL.jpg)
![John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack - Image 3](https://m.media-amazon.com/images/I/51+LwePIu8L.jpg)
![John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack - Image 4](https://m.media-amazon.com/images/I/51suMJHdEJL.jpg)
![John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack - Image 5](https://m.media-amazon.com/images/I/51ae66QFt5L.jpg)

## Frequently Bought Together

- John Guest Speedfit PSEI6012U9 Push-fit Female Connector Reducing Coupling, 3/8 OD x 9/16 UNEF, 10-Pack
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- John Guest PP011224W Male Connector, 3/8" OD x 1/2" NPTF (Pack of 10)

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**Shop now:** [https://www.desertcart.ec/products/99749253-john-guest-speedfit-psei6012u9-push-fit-female-connector-reducing-coupling](https://www.desertcart.ec/products/99749253-john-guest-speedfit-psei6012u9-push-fit-female-connector-reducing-coupling)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-10*