--- product_id: 12031191 title: "Watts Brass & Tubular #9D-M3 1/2 1/2\" Backflow Preventer" brand: "watts" price: "฿10465" currency: THB in_stock: true reviews_count: 9 category: "Watts" url: https://www.desertcart.co.th/products/12031191-watts-brass-and-tubular-9d-m3-1-2-1-2 store_origin: TH region: Thailand --- # prevents backflow under pressure suitable for hot & cold water 1/2 inch precision fit Watts Brass & Tubular #9D-M3 1/2 1/2" Backflow Preventer **Brand:** watts **Price:** ฿10465 **Availability:** ✅ In Stock ## Summary > 🚰 Keep your flow flawless—because your water deserves the best! ## Quick Answers - **What is this?** Watts Brass & Tubular #9D-M3 1/2 1/2" Backflow Preventer by watts - **How much does it cost?** ฿10465 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/12031191-watts-brass-and-tubular-9d-m3-1-2-1-2) ## Best For - watts enthusiasts ## Why This Product - Trusted watts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Application Ready:** Perfect for labs, dairy, sterilizers, and boiler feed lines—engineered for professional-grade performance. - • **Dual Rubber Disc Check Valve:** Advanced sealing technology guarantees zero backflow, protecting your potable water. - • **Continuous Pressure Endurance:** Built to handle hot or cold water under constant pressure without compromising safety. - • **Compact 1/2" Union FNPT Design:** Seamlessly integrates with smaller supply lines for sleek, space-saving installs. - • **Premium Brass Body Construction:** Durable, corrosion-resistant build ensures long-lasting reliability in demanding environments. ## Overview The Watts Brass & Tubular #9D-M3 1/2" Backflow Preventer is a precision-engineered valve designed to prevent reverse water flow in smaller supply lines. Featuring a robust brass body and a dual rubber disc check valve, it ensures reliable, leak-proof operation under continuous hot or cold water pressure. Ideal for professional applications such as laboratories, dairy equipment, and boiler feed lines, this compact device safeguards potable water systems with premium durability and seamless installation. ## Description 1/2" Backflow Preventer Review: Go with the Flow…… - Worked like a charm and is a solid device. Tested it because I live a boring life and have nothing g else to do with my time. Plus. I did not want putrid hot water back flowing into my potable drinking water. Worked like a charm. Pay the premium - its worth it. Review: Great valve - Easy to install. Did it's job 👍. Ty ## Features - WATTS 0950053 Check Valve, 1/2 in, Union FNPT x FNPT, Brass Body - Specially made for smaller supply lines and ideally suited for laboratory equipment, processing tanks, sterilizers, dairy equipment and similar applications. - It is particularly recommended for boiler feed lines to prevent backflow when supply pressure falls below system pressure. - Suitable for use on hot or cold water and can be used under continuous pressure. - It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000KLHK16 | | Best Sellers Rank | #136,713 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #321 in Check Valves | | Brand Name | Watts | | Color | Stainless Steel,Brass | | Connector Type | Union | | Customer Reviews | 4.4 4.4 out of 5 stars (165) | | Exterior Finish | Brass | | Included Components | 1/2" Backflow Preventer | | Item Dimensions | 4 x 3 x 2 inches | | Item Type Name | TV733156 | | Item Weight | 1.15 Pounds | | Manufacturer | Watts Brass & Tubular | | Material Type | Brass | | Model Number | 9D-M3 1/2 | | Number of Pieces | 1 | | Size | 1/2 inch | | Thread Type | NPT | | UPC | 098268676815 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Watts - **Color:** Stainless Steel,Brass - **Connector Type:** Union - **Exterior Finish:** Brass - **Item Weight:** 1.15 Pounds - **Item dimensions L x W x H:** 4 x 3 x 2 inches - **Material:** Brass - **Number of Pieces:** 1 - **Size:** 1/2 inch - **Thread Type:** NPT ## Images ![Watts Brass & Tubular #9D-M3 1/2 1/2" Backflow Preventer - Image 1](https://m.media-amazon.com/images/I/61cOWTVXLTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Go with the Flow…… *by R***B on March 21, 2024* Worked like a charm and is a solid device. Tested it because I live a boring life and have nothing g else to do with my time. Plus. I did not want putrid hot water back flowing into my potable drinking water. Worked like a charm. Pay the premium - its worth it. ### ⭐⭐⭐⭐⭐ Great valve *by G***I on November 9, 2023* Easy to install. Did it's job 👍. Ty ### ⭐⭐⭐⭐⭐ It was the perfect fit! *by E***R on August 16, 2021* It worked perfectly and I am a happy customer. Delivery was right on time. Thanks ## Frequently Bought Together - Watts Brass & Tubular #9D-M3 1/2 1/2" Backflow Preventer - Bell and Gossett 110192 Fb-38 Pressure Reducing Valve - Hydro Master Automatic Air Vent Valve 1/8 Inch Brass --- ## 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.co.th/products/12031191-watts-brass-and-tubular-9d-m3-1-2-1-2](https://www.desertcart.co.th/products/12031191-watts-brass-and-tubular-9d-m3-1-2-1-2) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-27*