--- product_id: 196999075 title: "John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP" brand: "john guest" price: "€ 11.35" currency: EUR in_stock: true reviews_count: 12 category: "John Guest" url: https://www.desertcart.sk/products/196999075-john-guest-3-8-inch-od-x-3-8-inch store_origin: SK region: Slovakia --- # FDA & NSF certified safe materials Push-to-connect tech, no tools needed Durable chemical-resistant polypropylene John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP **Brand:** john guest **Price:** € 11.35 **Availability:** βœ… In Stock ## Summary > πŸš€ Upgrade your plumbing game with instant, leak-proof connections! ## Quick Answers - **What is this?** John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP by john guest - **How much does it cost?** € 11.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/196999075-john-guest-3-8-inch-od-x-3-8-inch) ## 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 - β€’ **Built to Last:** Robust polypropylene resists chemicals and wear for long-term reliability - β€’ **Certified Safety:** FDA-compliant and NSF 61/51 certified for peace of mind - β€’ **Leak-Free Assurance:** EPDM O-rings ensure a secure, drip-proof seal every time - β€’ **Effortless Installation:** Push-fit design slashes install time by 40%, no tools required - β€’ **Versatile Compatibility:** Connects 3/8 inch OD pipes to 3/8 inch NPT threads seamlessly ## Overview The John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter is a premium push-to-connect plumbing fitting crafted from durable, chemical-resistant polypropylene. Featuring EPDM O-rings and John Guest’s patented push-fit technology, it guarantees quick, tool-free installation and leak-free performance. FDA-compliant and NSF certified, this adapter is trusted for safe, reliable connections between 3/8 inch OD pipes and 3/8 inch NPT threaded fittings, making it a must-have for efficient, professional-grade plumbing projects. ## Description Product Description Simplify your plumbing and home improvement projects with the John Guest Male Connector. These easy-to-install male couplers are equipped with EPDM O-rings that utilize John Guest's push-fit technology to make easy, reliable, and leak-free connections. This FDA-compliant plumbing fitting is made with durable and lead-free plastics that provide resistance against chemicals. From the Manufacturer Push-fit plastic fitting for the connection of plastic, copper, and CPVC pipe. Designed, manufactured and assembled by John Guest Speedfit. Simply push the fitting fully onto the pipe and twist the plastic nut clockwise to lock in place. Should the need arise to demount the connection unlock the nut and push the collet towards the body of the fitting and pull the pipe to release. The fitting ensures an easier working environment in confined places, is approved for behind the wall installations, and removes the need for hot works on site. Installation can be reduced by around 40-Percent when compared to traditional fixing methods. Review: Easy installation and leak-free performance! - Fantastic push-to-connect fitting. After watching a single YouTube video, I had it installed in no time. It formed a strong, secure seal with zero leaks. Super easy to work with for a quick DIY project! Review: Anyone With a Milwaukee 4 Gallon Sprayer Needs This - The Milwaukee 4-Gallon sprayer is a wonderful invention but a small design flaw with the final connector that seperates the fluid suction to the plastic tank is this plastic peice. Somehow milwuakee did not fully pass the R&D testing and this peice does indeed fail and leaks. The simple fix is a 1/4" tube that could have plugged into this and onto the recieving pump adapter and all leaks go away. The threads are simply not rated to spec on the milwuakee plastic molding. Your best to just dremmel it off and use this peice. $5 and your backpack sprayer will be leak free. Easy to install. Be sure to grab some 1/4" tubing as well. You only need half an inch but you will need to buy a spool of it for a few bucks. ## Features - JOHN GUEST MALE CONNECTOR: The John Guest male connector is a push-to-connect fitting that is used to join a 3/8 in. (OD sized) pipe and an 3/8 in. NPT thread quickly and easily - NO TOOLS REQUIRED: Push-to-connect fittings provide a simple, quick, reliable, and leak-free connection with no tools required - DESIGN: This male NPT connector is equipped with EPDM O-rings that utilize John Guest's push-fit technology to make easy, reliable, and leak-free connections - DURABLE: This male coupler is made with durable white polypropylene that can protect against chemicals - SAFETY: These MNPT connectors are manufactured with FDA-compliant material and are NSF 61 and 51 certified ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005S4LDJ0 | | Best Sellers Rank | #7,247 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #145 in Pipe Fittings | | Brand | John Guest | | Brand Name | John Guest | | Color | White | | Connector Type | Adapter | | Customer Reviews | 4.5 out of 5 stars 203 Reviews | | Exterior Finish | White | | Global Trade Identification Number | 00665626120107 | | Included Components | 3/8 Inch OD x 3/8 Inch NPT Straight Adapter | | Item Dimensions | 5 x 7 x 1 inches | | Item Type Name | Plastic Push Male Adapter | | Item Weight | 9.07 g | | Item dimensions L x W x H | 5 x 7 x 1 inches | | Manufacturer | Reliance Worldwide Corporation | | Manufacturer Part Number | PP011223WP | | Material | Polypropylene | | Material Type | Polypropylene | | Model Number | PP011223WP | | Number of Packs | 1 | | Number of Pieces | 1 | | Size | 3/8 in. OD x 3/8 in. NPT | | Thread Type | NPT | | UPC | 665626120107 | | Unit Count | 1 Count | ## Product Details - **Brand:** John Guest - **Color:** White - **Connector Type:** Adapter - **Exterior Finish:** White - **Item Weight:** 0.02 Pounds - **Item dimensions L x W x H:** 5 x 7 x 1 inches - **Material:** Polypropylene - **Number of Pieces:** 1 - **Size:** 3/8 in. OD x 3/8 in. NPT - **Thread Type:** NPT ## Images ![John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - Image 1](https://m.media-amazon.com/images/I/517J2I6BseL.jpg) ![John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - Image 2](https://m.media-amazon.com/images/I/51GIN6D7CxL.jpg) ![John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - Image 3](https://m.media-amazon.com/images/I/51ivrrPPtzL.jpg) ![John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - Image 4](https://m.media-amazon.com/images/I/51CkLjd2p4L.jpg) ![John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - Image 5](https://m.media-amazon.com/images/I/51LcaHXUSRL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy installation and leak-free performance! *by A***W on July 28, 2026* Fantastic push-to-connect fitting. After watching a single YouTube video, I had it installed in no time. It formed a strong, secure seal with zero leaks. Super easy to work with for a quick DIY project! ### ⭐⭐⭐⭐⭐ Anyone With a Milwaukee 4 Gallon Sprayer Needs This *by J***I on November 25, 2025* The Milwaukee 4-Gallon sprayer is a wonderful invention but a small design flaw with the final connector that seperates the fluid suction to the plastic tank is this plastic peice. Somehow milwuakee did not fully pass the R&D testing and this peice does indeed fail and leaks. The simple fix is a 1/4" tube that could have plugged into this and onto the recieving pump adapter and all leaks go away. The threads are simply not rated to spec on the milwuakee plastic molding. Your best to just dremmel it off and use this peice. $5 and your backpack sprayer will be leak free. Easy to install. Be sure to grab some 1/4" tubing as well. You only need half an inch but you will need to buy a spool of it for a few bucks. ### ⭐⭐⭐⭐⭐ True npt fittings *by M***D on June 22, 2026* Actual npt threads. Works as advertised. Well made. High quality. Used to convert 2 stage water filter to 1/4 inch push-to-connect tube and fittings. ## Frequently Bought Together - John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP - John Guest PPSV041212WP Plastic Push Shut Off Valve, 3/8 in. Tube OD, White - John Guest 3/8 Inch x 25 Feet LLDPE Tubing, Flexible Water Tubing for Plumbing, Blue, PE-12-EI-025F-B --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/196999075-john-guest-3-8-inch-od-x-3-8-inch](https://www.desertcart.sk/products/196999075-john-guest-3-8-inch-od-x-3-8-inch) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-21*