--- product_id: 12062999 title: "Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2\" NPT Female" brand: "merit brass" price: "¥4721" currency: JPY in_stock: true reviews_count: 8 category: "Merit Brass" url: https://www.desertcart.jp/products/12062999-stainless-steel-304-cast-pipe-fitting-union-class-150-1 store_origin: JP region: Japan --- # Dual female NPT threads for secure seal Class 150 precision fit 304 stainless steel corrosion resistance Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female **Brand:** merit brass **Price:** ¥4721 **Availability:** ✅ In Stock ## Summary > 🔩 Connect with Confidence — The Union That Holds Your System Together ## Quick Answers - **What is this?** Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female by merit brass - **How much does it cost?** ¥4721 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/12062999-stainless-steel-304-cast-pipe-fitting-union-class-150-1) ## Best For - merit brass enthusiasts ## Why This Product - Trusted merit brass brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Lightweight:** At just 7.2 ounces and 0.5 inch size, it fits seamlessly into tight plumbing setups. - • **Effortless Pipe Connection:** Three-piece union design enables quick assembly and disassembly without hassle. - • **Tight, Leak-Resistant Seal:** Female NPT threads on both ends ensure superior sealing compared to straight threads. - • **Certified Quality Assurance:** Meets ISO 49 and ANSI B1.20.1 standards for reliable, industry-grade performance. - • **Premium 304 Stainless Steel:** Enhanced durability and corrosion resistance outperforming standard 302 grade fittings. ## Overview This Merit Brass stainless steel 304 cast pipe fitting union features female NPT threads on both ends for connecting two male threaded pipes. Designed as a three-piece Class 150 fitting, it offers easy assembly and disassembly with superior corrosion resistance and durability. Certified to ISO 49 and ANSI B1.20.1 standards, it ensures a tight, leak-resistant seal ideal for professional plumbing applications. ## Description The Merit Brass union is a class 150 stainless steel 304 cast pipe fitting with female National Pipe Taper (NPT) threads for connecting and extending two male threaded pipes. The union has three pieces and includes a threaded connection that can be screwed or unscrewed to connect or disconnect pipes more easily than couplings. It has NPT threads on both ends for creating tighter seals than straight threads. Made of stainless steel 304, the lower carbon content of this fitting ensures higher corrosion resistance than 302 grade steel. This class 150 fitting meets standards ISO 49 and ANSI B1.20.1 for quality assurance. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure.Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. 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).Merit Brass manufactures pipe nipples following ISO 9001 standards for quality assurance. The company, family-owned since 1937 and headquartered in Cleveland, OH, distributes pipe fittings in the United States and Canada. Review: Works good - Came on time Review: gas unions - Bought 2 unions. They were different styles. Worked. ## Features - Union for connecting and extending two male pipes - Female National Pipe Taper (NPT) threads on both ends for connecting two male threaded pipes - Made of stainless steel 304 for greater strength than 302 grade steel - Low carbon content for greater resistance to corrosion - Meets standards ISO 49 and ANSI B1.20.1 for quality assurance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003GSL0KM | | Best Sellers Rank | #730,394 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20,345 in Pipe Fittings | | Brand | Merit Brass | | Connector Type | Union | | Date First Available | April 12, 2010 | | Exterior Finish | Brass | | Global Trade Identification Number | 10671404096479 | | Item Weight | 7.2 ounces | | Item model number | K487-08 | | Manufacturer | Merit Brass | | Material | Stainless Steel | | Number of Pieces | 3 | | Package Dimensions | 2 x 1.9 x 0.9 inches | | Size | 0.5 Inch | | Thread Type | NPT | ## Product Details - **Brand:** Merit Brass - **Connector Type:** Union - **Exterior Finish:** Brass - **Global Trade Identification Number:** 10671404096479 - **Manufacturer:** Merit Brass - **Material:** Stainless Steel - **Number of Pieces:** 3 - **Size:** 0.5 Inch - **Thread Type:** NPT ## Images ![Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female - Image 1](https://m.media-amazon.com/images/I/815hk9P9e0L.jpg) ![Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female - Image 2](https://m.media-amazon.com/images/I/912TdqgvcCL.jpg) ![Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female - Image 3](https://m.media-amazon.com/images/I/91XGZr2VaFL.jpg) ![Stainless Steel 304 Cast Pipe Fitting, Union, Class 150, 1/2" NPT Female - Image 4](https://m.media-amazon.com/images/I/71VJ0gfNH9L.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works good *by F***N on August 8, 2025* Came on time ### ⭐⭐⭐⭐⭐ gas unions *by K***. on April 14, 2021* Bought 2 unions. They were different styles. Worked. ### ⭐⭐⭐ Three Stars *by J***. on January 4, 2017* It leaked, had to buy a washer from McMaster to get it to seal. --- ## 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.jp/products/12062999-stainless-steel-304-cast-pipe-fitting-union-class-150-1](https://www.desertcart.jp/products/12062999-stainless-steel-304-cast-pipe-fitting-union-class-150-1) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-10*