--- product_id: 456665994 title: "Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm" brand: "watts" price: "1258073₫" currency: VND in_stock: false reviews_count: 5 url: https://www.desertcart.vn/products/456665994-watts-lfmmv-m1-ut-3-4-union-inlet-type-thermostatic store_origin: VN region: Vietnam --- # Adjustment cap with locking feature 13 GPM max flow rate Lead-free copper silicon alloy Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm **Brand:** watts **Price:** 1258073₫ **Availability:** ❌ Out of Stock ## Summary > 🔥 Mix it right, lock it tight! 🔒 ## Quick Answers - **What is this?** Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm by watts - **How much does it cost?** 1258073₫ with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/456665994-watts-lfmmv-m1-ut-3-4-union-inlet-type-thermostatic) ## 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 - • **Certified Reliability:** ASSE 1017, 1069, 1070 & IAPMO cUPC listings guarantee trusted performance. - • **Secure Locking Adjustment:** Lock your settings to prevent accidental changes and maintain consistency. - • **Precision Temperature Control:** Set your perfect water temp between 80°F-120°F with ease. - • **Robust Lead-Free Construction:** Durable copper silicon alloy ensures safety and compliance. - • **Integrated Filtration & Check Valves:** Built-in washers and check valves protect your system from debris and backflow. ## Overview The Watts LFMMV-M1-UT is a 3/4" union inlet thermostatic mixing valve crafted from lead-free copper silicon alloy. It delivers precise temperature control from 80°F to 120°F at flow rates up to 13 GPM. Featuring a locking adjustment cap, integral filter washers, and check valves, it meets multiple ASSE certifications ensuring safety and reliability for both single and multiple fixture applications. ## Description Watts LFMMVM1-UT 3/4" Lead Free Thermostatic Mixing ValveSeries LFMMV Thermostatic Mixing Valves maintain and limit mixed hot water to a desired, selectable temperature. The LFMMV series can be set to any temperature between 80°F and 120°F with flow rates as low as 0.5 gpm and as high as 12 gpm (refer to capacity chart on back). This mixing valve series is listed under ASSE 1017 for valves used in hot water source applications, ASSE 1069 for single-pipe, tempered water applications and ASSE 1070 for valves used in individual or multiple fixture applications and also listed IAPMO cUPC. The LFMMVs feature Lead Free construction to comply with Lead Free installation requirements.Watts LFMMVM1-UT 3/4" Lead Free Thermostatic Mixing Valve Features: 3/4" Thread Lead Free Brass body construction Solid wax hydraulic principle thermostat assures dependable mixing of hot and cold water Thermostat controls both hot and cold water Union thread ends Adjustment cap with locking feature ASSE 1017 listed ASSE 1069 listed ASSE 1070 listed IAPMO cUPC listed Integral filter washers and check valves Review: Easy to install in my bath vanity floor. This anti-scald (mixer) valve for controlling hot water temperature at my Roman tub replaces a 2007 year mixer valve. Read the directions carefully; to adjust the temperature, unscrew the Allen-head screw in the tan handle a bit (no need to remove) and then pull the handle back and turn. The handle cannot be turned with the Allen-head screw tight, and there was no need to completely remove the screw. Build quality: High quality part, greatly improved for long-term reliability, & ability to adjust the temperature at the tub. Old part replaced, from 2007. Review: Why did you pick this product vs others?: Looked like the exact match ## Features - Thermostat controls both hot and cold water - Adjustment cap with locking feature - Integral filter washers and check valves - Asse Listed 1070,1069, 1017 ## Technical Specifications | Specification | Value | |---------------|-------| | Material | Alloy,Copper,Lead | | Brand | WATTS | | Item dimensions L x W x H | 16 x 11.4 x 6.6 Centimeters | | Exterior Finish | Copper | | Inlet Connection Type | Flange | | Outlet Connection Type | Flange | | Number of Ports | 1 | | Specification Met | ASSE, NEMA | | Manufacturer | Watts | | UPC | 098268451825 | | Item model number | LFMMV-M1-UT | | Product Dimensions | 16 x 11.43 x 6.6 cm; 1.01 kg | | ASIN | B007VHHENG | ## Product Details - **Brand:** WATTS - **Exterior Finish:** Copper - **Inlet Connection Type:** Flange - **Item dimensions L x W x H:** 16 x 11.4 x 6.6 Centimeters - **Manufacturer:** Watts - **Material:** Alloy,Copper,Lead - **Number of Ports:** 1 - **Outlet Connection Type:** Flange - **Specification Met:** ASSE, NEMA - **UPC:** 098268451825 ## Images ![Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm - Image 1](https://m.media-amazon.com/images/I/61GVKmOuMGL.jpg) ## Questions & Answers **Q: What is the min./max. Pressure for both inlets? And is there a drop in outlet pressure?** A: 30-150 psi operating pressure. Negligible pressure drop. **Q: What is the min./max. hot water temp. inlet? and how it will work if the hot temp. drop below the min.?** A: Min/Max HW inlet temp= 120 to 180 degrees. If the HW inlet water temp is below 120 the valve will simply pass cold water. The max pressure for both inlets is 150 PSI. There is no listed minimum pressure. Pressure drop varies with flow- at 6 GPM flow the pressure drop is 10 PSI. **Q: My solar hot water will be feeding my electric tankless heater. This should drop the water from 180 to 120 degree before tankless heater right?** A: Yes- but a couple of cautions. The maximum outlet temperature setting is 120 degrees, and the maximum inlet hot water temp to get that 120 degrees is 180 degrees. The valve is rated to still function at 200 degree inlet temp but at anything over 180 you will likely end up with an outlet temp over 120. **Q: The temperature adjustment knob will not turn. Is there a lock or trick to this?** A: To adjust the setting of the valve, loosen locking cap screw with hex wrench, see Figure 3. Cap must be lifted 1/4" to adjust temperature. To increase the temperature, turn counterclockwise. To decrease temperature turn clockwise. 4. Lower handle and tighten screw. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by N***M on 24 June 2025* Easy to install in my bath vanity floor. This anti-scald (mixer) valve for controlling hot water temperature at my Roman tub replaces a 2007 year mixer valve. Read the directions carefully; to adjust the temperature, unscrew the Allen-head screw in the tan handle a bit (no need to remove) and then pull the handle back and turn. The handle cannot be turned with the Allen-head screw tight, and there was no need to completely remove the screw. Build quality: High quality part, greatly improved for long-term reliability, & ability to adjust the temperature at the tub. Old part replaced, from 2007. ### ⭐⭐⭐⭐⭐ Review *by A***R on 30 June 2025* Why did you pick this product vs others?: Looked like the exact match ### ⭐⭐⭐⭐⭐ Review *by J***L on 18 April 2025* My house was not getting hot water from my gas water heater and my hot water line was hot, so i knew it was not my water heater. After the mixing valve the water line was cool to the touch. So I replaced my old 10 year mixing valve with the same one which took me 30 minutes to change out and happy to report that there is hot water again. ## Frequently Bought Together - Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm - MEASUREMAN Tridicator, Thermo-Manometer Pressure Gauge, 2-1/2", 0-160psi/30-250 deg F, Stainless Steel Case, 1/4" NPT Back Mount - MEANLIN Stainless Steel Thermal Pressure Gauge 0-160Psi, 30-250F, 2.5" Face Dial, Liquid Filled, 1/4" NPT, Back Mount --- ## 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.vn/products/456665994-watts-lfmmv-m1-ut-3-4-union-inlet-type-thermostatic](https://www.desertcart.vn/products/456665994-watts-lfmmv-m1-ut-3-4-union-inlet-type-thermostatic) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-05*