--- product_id: 64457686 title: "John Guest 15mm x 3/8\" Straight Connector" brand: "john guest" price: "S$13" currency: SGD in_stock: true reviews_count: 4 category: "John Guest" url: https://www.desertcart.sg/products/64457686-john-guest-15mm-x-3-8-straight-connector store_origin: SG region: Singapore --- # 15mm to 3/8" precision fit Twist & Lock secure seal Lead-free, corrosion-resistant John Guest 15mm x 3/8" Straight Connector **Brand:** john guest **Price:** S$13 **Availability:** ✅ In Stock ## Summary > 🔧 Connect with confidence—plumbing made sleek and simple! ## Quick Answers - **What is this?** John Guest 15mm x 3/8" Straight Connector by john guest - **How much does it cost?** S$13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/64457686-john-guest-15mm-x-3-8-straight-connector) ## 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 - • **Leakproof Confidence:** Twist & Lock mechanism ensures a secure, high-performance connection every time. - • **Durable & Eco-Friendly:** Lead-free plastic with Grip and Seal tech resists corrosion and scale build-up. - • **Universal Compatibility:** Seamlessly connects plastic and copper pipes for versatile plumbing solutions. - • **Certified Quality Assurance:** BSI and WRAS approved for trusted safety and performance. - • **Effortless Push-Fit Installation:** Install, demount, and refit in seconds—no tools, no hassle. ## Overview The John Guest 15mm x 3/8" Straight Connector is a premium push-fit adapter designed for quick, tool-free installation in hot and cold water or central heating systems. Made from lead-free plastic with advanced Grip and Seal technology, it offers corrosion resistance and leakproof performance. Compatible with both plastic and copper pipes, it carries BSI and WRAS certifications, ensuring industry-leading safety and reliability. ## 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: Quality fitting, did the job perfectly. - Used to connect a 15mm copper pipe to a 3/8" plastic tube for drinking water from our borehole, worked perfectly. Review: Used for reducing pipework on a beer cooler - Good solid push fit fitting. You can tell when it is fully in place as you feel a sort of click as it beds home. We needed to drop from 15mm to 3/8" then use another reducer to get down from 3/8" to the 5/16" cooling line we use (unfortunately there doesn't appear to be a direct 15mm to 5/16" reducer) ## Features - DIMENSIONS: 15 mm to 3/8 inch connection ports - MATERIAL: Lead-free plastic construction with Grip and Seal technology - COMPATIBILITY: Suitable for plastic and copper pipe connections - CERTIFICATIONS: BSI and WRAS approved - APPLICATIONS: For hot and cold water and central heating systems ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00HVFULY2 | | Best Sellers Rank | 45,484 in DIY & Tools ( See Top 100 in DIY & Tools ) 365 in Pipes, Pipe Fittings & Accessories | | Brand | John Guest | | Colour | Grey, White | | Connector Type | Adapter | | Connector type | Adapter | | Customer Reviews | 4.7 out of 5 stars 43 Reviews | | Item Dimensions | 5.5 x 2.5 x 2.5 centimetres | | Item Weight | 10 Grams | | Item dimensions L x W x H | 5.5 x 2.5 x 2.5 centimetres | | Manufacturer | John Guest | | Material | Copper , Plastic | | Number of Pieces | 1 | | Part Number | NC2511 | | Size | 15mm x 3/8" | | Thread Size | 0.375 inches | | Thread Type | UN | | Unit Count | 1.0 count | ## Product Details - **Brand:** John Guest - **Colour:** Grey, White - **Connector type:** Adapter - **Item dimensions L x W x H:** 5.5 x 2.5 x 2.5 centimetres - **Item weight:** 10 Grams - **Material:** Copper, Plastic - **Number of pieces:** 1 - **Size:** 15mm x 3/8" - **Thread size:** 0.375 inches - **Thread type:** UN ## Images ![John Guest 15mm x 3/8" Straight Connector - Image 1](https://m.media-amazon.com/images/I/51CdLE0LYJL.jpg) ![John Guest 15mm x 3/8" Straight Connector - Image 2](https://m.media-amazon.com/images/I/5183Yem7EoL.jpg) ![John Guest 15mm x 3/8" Straight Connector - Image 3](https://m.media-amazon.com/images/I/61KwpDN2K3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality fitting, did the job perfectly. *by A***W on 11 January 2025* Used to connect a 15mm copper pipe to a 3/8" plastic tube for drinking water from our borehole, worked perfectly. ### ⭐⭐⭐⭐⭐ Used for reducing pipework on a beer cooler *by K***N on 3 May 2024* Good solid push fit fitting. You can tell when it is fully in place as you feel a sort of click as it beds home. We needed to drop from 15mm to 3/8" then use another reducer to get down from 3/8" to the 5/16" cooling line we use (unfortunately there doesn't appear to be a direct 15mm to 5/16" reducer) ### ⭐⭐⭐⭐⭐ It’s a J G fitting *by M***Y on 26 May 2020* It’s a John Guest fitting, as usual no leaks. You cannot buy better. ## Frequently Bought Together - John Guest 15mm x 3/8" Straight Connector - 5m Blue Water Tube 3/8" (9.5mm OD) for Reverse Osmosis Systems, Refrigerators, Espresso Coffee Machines, Vending Machines, Water Filters. - John Guest PPSV041212WP Plastic Push Shut Off Valve, White, 3/8 in. Tube OD --- ## 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.sg/products/64457686-john-guest-15mm-x-3-8-straight-connector](https://www.desertcart.sg/products/64457686-john-guest-15mm-x-3-8-straight-connector) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-27*