--- product_id: 78636550 title: "Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10)" brand: "yoebor" price: "€ 19.06" currency: EUR in_stock: true reviews_count: 9 url: https://www.desertcart.com.cy/products/78636550-metalwork-plastic-push-to-connect-straight-union-pipe-tube-reducer store_origin: CY region: Cyprus --- # 150 psi max pressure 8mm to 4mm size reducer 32-140°F operating temp Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) **Brand:** yoebor **Price:** € 19.06 **Availability:** ✅ In Stock ## Summary > 🔗 Connect with confidence—where precision meets durability! ## Quick Answers - **What is this?** Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) by yoebor - **How much does it cost?** € 19.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/78636550-metalwork-plastic-push-to-connect-straight-union-pipe-tube-reducer) ## Best For - yoebor enthusiasts ## Why This Product - Trusted yoebor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable PBT Polymer:** Engineered to resist solvents, heat, shrinkage, and impact for long-lasting reliability. - • **High-Pressure Ready:** Handles up to 150 psi, ensuring robust performance under demanding conditions. - • **Compact & Lightweight:** Slim 1.34-inch design fits tight spaces without compromising strength or flow. - • **Precision Size Reduction:** Seamlessly connects 8mm to 4mm pipes, perfect for versatile pneumatic setups. - • **Effortless Push-to-Connect:** Tool-free installation for instant, secure pipe connections—no soldering needed. ## Overview This pack of 10 Metalwork Plastic Push-to-Connect Straight Union Reducer Fittings offers a reliable solution for connecting 8mm and 4mm pipes. Crafted from high-performance polybutylene terephthalate (PBT), these fittings resist solvents, heat, and impact while supporting pressures up to 150 psi and operating temperatures from 32 to 140°F. Ideal for professional pneumatic and plumbing applications, they enable quick, tool-free installation and ensure durable, leak-free connections. ## Description This reducing coupler fitting is made of polybutylene terephthalate (PBT) and has tube connectors. This reducing coupler has one end smaller than the other for connecting two pipes with different diameters. It is a push-to-connect fitting that connects to pipes or tubing on both ends. The fitting is made of polybutylene terephthalate (PBT), which is a polymer resistant to solvents, shrinkage, heat, and impact, and it can be treated to increase resistance to UV and flammability. The working pressure for this fitting is up to 150 pounds per square inch (psi), and its operating temperature ranges from 32 to 140 degrees F. Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. Push-to-connect compression fittings do not require tools or sealants, and are useful in installations where a heat source, such as a soldering torch, is prohibited. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size, and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness). Review: Work fine on my tire machines at my shop - Good price easy to use as durable as plastic can be function as should would buy again Review: True to size. Works well. - Nice reducer coupling worked perfectly. ## Features - Reducing coupler for connecting two pipes with different diameters - Push-to-connect fitting connects to pipes or tubing on both ends - Made of polybutylene terephthalate (PBT) for resistance to solvents, shrinkage, heat, and impact - Working pressure of up to 150 psi - Operating temperature ranges from 32 to 140 degrees F ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CG7GQBK | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #36,955 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #120 in Push-to-Connect Fittings | | Brand | Yoebor | | Color | Metric Tube | | Connector Type | Union | | Customer Reviews | 4.6 4.6 out of 5 stars (157) | | Date First Available | April 16, 2018 | | Exterior Finish | Brass | | Is Discontinued By Manufacturer | No | | Item Weight | 1.44 ounces | | Item dimensions L x W x H | 1.34 x 0.6 x 0.6 inches | | Manufacturer | Metalwork | | Material | Plastic | | Measurement System | metric | | Number of Pieces | 10 | | Product Dimensions | 1.34 x 0.6 x 0.6 inches | | Size | 8mm x 4mm | | Thread Type | NPT | ## Product Details - **Brand:** Yoebor - **Color:** Metric Tube - **Connector Type:** Union - **Exterior Finish:** Brass - **Item dimensions L x W x H:** 1.34 x 0.6 x 0.6 inches - **Manufacturer:** Metalwork - **Material:** Plastic - **Number of Pieces:** 10 - **Size:** 8mm x 4mm - **Thread Type:** NPT ## Images ![Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) - Image 1](https://m.media-amazon.com/images/I/31H6sbpdqPL.jpg) ![Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) - Image 2](https://m.media-amazon.com/images/I/41mvtIwA5xL.jpg) ![Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) - Image 3](https://m.media-amazon.com/images/I/41uCIH19L5L.jpg) ![Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) - Image 4](https://m.media-amazon.com/images/I/5158dYCQddL.jpg) ![Metalwork Plastic Push to Connect Straight Union Pipe Tube Reducer Fitting, 8mm OD x 4mm OD, Reducing Coupler Straight Pneumatic Connector (Pack of 10) - Image 5](https://m.media-amazon.com/images/I/517D4mLarsL.jpg) ## Questions & Answers **Q: what does the "OD" stand for?** A: "OD" stands for Outside Diameter of the tubing. **Q: Can this be used for water filtration system?** A: Yes. I've seen them used on those systems. **Q: Can this be used for fuel lines ?** A: No, this is specifically used for computer cooling. Fuel requires a different types of material that you can find at an auto parts store. **Q: Can these be used for 3/8 to 1/4 inch tubing reduction?** A: You really need to match standard or metric. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Work fine on my tire machines at my shop *by B***R on September 12, 2025* Good price easy to use as durable as plastic can be function as should would buy again ### ⭐⭐⭐⭐⭐ True to size. Works well. *by D***S on June 26, 2025* Nice reducer coupling worked perfectly. ### ⭐⭐⭐⭐ As expected. *by B***S on December 19, 2019* Good --- ## 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.com.cy/products/78636550-metalwork-plastic-push-to-connect-straight-union-pipe-tube-reducer](https://www.desertcart.com.cy/products/78636550-metalwork-plastic-push-to-connect-straight-union-pipe-tube-reducer) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-04-24*