--- product_id: 44724499 title: "John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P" brand: "john guest" price: "€ 18.01" currency: EUR in_stock: true reviews_count: 10 category: "John Guest" url: https://www.desertcart.sk/products/44724499-john-guest-speedfit-3-8-inch-compression-female-connector-push store_origin: SK region: Slovakia --- # Tool-free push-fit install Compact 9/16–24 UNEF thread Durable polysulfone + EPDM seal John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P **Brand:** john guest **Price:** € 18.01 **Availability:** βœ… In Stock ## Summary > πŸš€ Upgrade your plumbing game with effortless, leak-proof speedfit tech! ## Quick Answers - **What is this?** John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P by john guest - **How much does it cost?** € 18.01 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/44724499-john-guest-speedfit-3-8-inch-compression-female-connector-push) ## 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:** Premium polysulfone body with EPDM O-ring for leak-proof, long-term reliability πŸ›‘οΈ - β€’ **Space-Saving Design:** Compact 9/16–24 UNEF thread fits tight spots without compromising connection integrity πŸ“ - β€’ **Versatile Compatibility:** Seamlessly fits plastic or copper tubingβ€”perfect for filtration, beverage & vending systems - β€’ **Certified Safety & Strength:** NSF 61 & ASSE 1061 certified; withstands up to 160 PSI at room temp for peace of mind - β€’ **Instant Push-Fit Connection:** Connect or disconnect 3/8" tubing in secondsβ€”no tools needed ⚑ ## Overview The John Guest Speedfit 3/8 Inch Compression Female Connector offers a tool-free push-to-connect design that ensures fast, secure installation for 3/8" OD tubing to 3/8" threaded valves. Crafted from durable white polysulfone with an EPDM O-ring, it guarantees long-lasting, leak-resistant performance. Certified to NSF 61 and ASSE 1061 standards, it supports pressures up to 160 PSI at 73Β°F, making it ideal for filtration, beverage, and vending systems. Its compact 9/16–24 UNEF thread design fits snugly in tight spaces, delivering professional-grade reliability with effortless installation. ## Description desertcart.com: John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P : Industrial & Scientific Review: Finally found what I needed!! - After multiple trips to the local hardware stores, I finally found what I actually needed on desertcart. I recently moved into a new house and had an RO installed the day after we moved in. I needed to hook up my RO to my refrigerator water supply line and was having no luck whatsoever finding the hardware to get it done. My RO is the APEC RO-HI (purchased from desertcart) with the 3/8" tubing for faster water dispensing. On new house builds (at least in AZ) the builder is installing 3 standard water valves under the kitchen sink area. 1 = hot, 2 = cold, 3 = refrigerator water line feed. By default the builder will use a 3/8" to 3/8" compression hose to connect valve 2 (cold water) to valve 3 (fridge water feed). I tried finding the standard tube compression fittings with nut & ferrule but I just couldn't seem to find the right part. I finally searched desertcart and found this 3/8" female compression to quick connect push-in tubing connector and it was exactly what I needed. The connector screws onto the standard 3/8" compression male adapter of a water valve and the other end accepts my 3/8" RO water line tubing. From the attached picture, you can see the connection to valve 3 (fridge water supply feed) on the right. This connector is attached directly to the water valve. You can't see it, but I cut a small piece of tubing and attached this connector to a 90 degree connector to eliminate extra strain heading up to the additional T connector on the clear tubing. The clear tubing is the filtered RO line going to my RO faucet. By adding the T connector, I have good water going to the RO faucet and into valve #3, which feeds my fridge water source. I added some Teflon tape to the valve 3 male end and hand-tightened this connector. No leaks and perfect result. Highly recommend this product if you need to connect your 3/8" RO tubing to your standard 3/8" compression male valve. A++ Review: Great fitting - Easy to install, works great and no leaks ## Features - FAST INSTALLATION: Push-fit design connects or disconnects 3/8 in OD tubing to 3/8 in threads without tools - DURABLE BUILD: White polysulfone body with EPDM O-ring ensures lasting performance - WIDE USE: Works with plastic or copper tubing for filtration, beverage, and vending systems - CERTIFIED SAFE: Meets NSF 61 and ASSE 1061; supports 160 PSI at 73 degrees F and 100 PSI at 180 degrees F - COMPACT FIT: 9/16–24 UNEF thread design allows secure connection in tight spaces ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XG3ZHGM | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #35,394 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #127 in Push-to-Connect Fittings | | Brand | John Guest | | Color | White | | Connector Type | Push to Connect | | Customer Reviews | 4.6 4.6 out of 5 stars (199) | | Date First Available | March 6, 2017 | | Exterior Finish | White | | Global Trade Identification Number | 00665628043923 | | Included Components | 1 female connector | | Installation Method | Push-to-Connect | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 0.24 ounces | | Item dimensions L x W x H | 1.51 x 0.8 x 0.8 inches | | Item model number | PSEI6012U9P | | Manufacturer | JOHN GUEST | | Material | Copper, Plastic | | Measurement System | inch | | Number of Pieces | 1 | | Part Number | PSEI6012U9P | | Product Dimensions | 1.51 x 0.8 x 0.8 inches | | Size | 3/8 in OD PTC x 3/8 in Comp | | Thread Type | NPT | | UPC | 665628043923 | | Usage | Amateur, Professional | | Warranty Description | 25 Years | ## Product Details - **Brand:** John Guest - **Color:** White - **Connector Type:** Push to Connect - **Exterior Finish:** White - **Item Weight:** 0.02 Pounds - **Item dimensions L x W x H:** 1.51 x 0.8 x 0.8 inches - **Material:** Copper, Plastic - **Number of Pieces:** 1 - **Size:** 3/8 in OD PTC x 3/8 in Comp - **Thread Type:** NPT ## Images ![John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P - Image 1](https://m.media-amazon.com/images/I/61fFYRMJZOL.jpg) ## Available Options This product comes in different **Customer Package Type** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Finally found what I needed!! *by H***Y on April 19, 2024* After multiple trips to the local hardware stores, I finally found what I actually needed on Amazon. I recently moved into a new house and had an RO installed the day after we moved in. I needed to hook up my RO to my refrigerator water supply line and was having no luck whatsoever finding the hardware to get it done. My RO is the APEC RO-HI (purchased from Amazon) with the 3/8" tubing for faster water dispensing. On new house builds (at least in AZ) the builder is installing 3 standard water valves under the kitchen sink area. 1 = hot, 2 = cold, 3 = refrigerator water line feed. By default the builder will use a 3/8" to 3/8" compression hose to connect valve 2 (cold water) to valve 3 (fridge water feed). I tried finding the standard tube compression fittings with nut & ferrule but I just couldn't seem to find the right part. I finally searched Amazon and found this 3/8" female compression to quick connect push-in tubing connector and it was exactly what I needed. The connector screws onto the standard 3/8" compression male adapter of a water valve and the other end accepts my 3/8" RO water line tubing. From the attached picture, you can see the connection to valve 3 (fridge water supply feed) on the right. This connector is attached directly to the water valve. You can't see it, but I cut a small piece of tubing and attached this connector to a 90 degree connector to eliminate extra strain heading up to the additional T connector on the clear tubing. The clear tubing is the filtered RO line going to my RO faucet. By adding the T connector, I have good water going to the RO faucet and into valve #3, which feeds my fridge water source. I added some Teflon tape to the valve 3 male end and hand-tightened this connector. No leaks and perfect result. Highly recommend this product if you need to connect your 3/8" RO tubing to your standard 3/8" compression male valve. A++ ### ⭐⭐⭐⭐⭐ Great fitting *by F***Z on May 2, 2025* Easy to install, works great and no leaks ### ⭐⭐⭐⭐⭐ Modern Day Water Filter Connector *by J***I on October 6, 2024* Having a water filter installed under my kitchen sink, this adapter was the perfect piece to fit between my 3/8 cold water line output and the water filter. While not required as the filter came with a kit that would allow the red line to be clamped down with tightening force on the outlet, I felt much more assured having this piece simply go in and be done with it. Not tools required to screw it on. Simple hand turn until no longer turns, and push your red line tube in. Simple as that. Check for leaks once water line open, and call it a day. Don't lose the small rubber ring that it comes with as mine fell out causing a leak but I quickly noticed the black piece on the counter and reinstalled with no issues. ## Frequently Bought Together - John Guest Speedfit 3/8 Inch Compression Female Connector, Push to Connect Plastic Plumbing Fitting, White, PSEI6012U9P - John Guest 3/8 Inch x 25 Feet LLDPE Tubing, Flexible Water Tubing for Plumbing, Blue, PE-12-EI-025F-B - John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP --- ## 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/44724499-john-guest-speedfit-3-8-inch-compression-female-connector-push](https://www.desertcart.sk/products/44724499-john-guest-speedfit-3-8-inch-compression-female-connector-push) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-31*