---
product_id: 733093789
title: "Watt LFMMVM1-UT 3/4\" Mixing Valve Lead Free Temperature Regulation"
brand: "watts"
price: "₨8999"
currency: LKR
in_stock: false
url: https://www.desertcart.lk/products/733093789-watt-lfmmvm1-ut-3-4-mixing-valve-lead-free-temperature
store_origin: LK
region: Sri Lanka
---

# Locking adjuster cap for safety 3/4" lead-free brass body Precise thermostat control 27-49°C Watt LFMMVM1-UT 3/4" Mixing Valve Lead Free Temperature Regulation

**Brand:** watts
**Price:** ₨8999
**Availability:** ❌ Out of Stock

## Summary

> 🌟 Mix it right, lock it tight — the smart valve for savvy spaces!

## Quick Answers

- **What is this?** Watt LFMMVM1-UT 3/4" Mixing Valve Lead Free Temperature Regulation by watts
- **How much does it cost?** ₨8999 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/733093789-watt-lfmmvm1-ut-3-4-mixing-valve-lead-free-temperature)

## 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

- • **Lead-Free Durability:** Premium brass alloy ensures safe, corrosion-resistant performance for every installation.
- • **Certified Reliability:** Meets ASSE 1070, 1069, 1017 standards for trusted residential and commercial use.
- • **Secure Locking Mechanism:** Adjuster cap with lock function prevents accidental changes, guaranteeing consistent settings.
- • **Precision Temperature Control:** Thermostat technology finely tunes water temperature between 27°C and 49°C for ultimate comfort.
- • **Integrated Filtration & Check Valve:** Built-in filter washer and check valve protect your system from debris and backflow.

## Overview

The Watts LFMMVM1-UT 3/4" Mixing Valve is a lead-free brass thermostat valve designed for precise temperature regulation in residential, commercial, and institutional settings. Featuring a locking adjuster cap, integrated filter washer, and check valve, it ensures safe, reliable tempered water delivery between 27°C and 49°C, with a maximum pressure rating of 150 PSI. Certified to ASSE standards, it combines durability, safety, and performance for modern plumbing needs.

## Description

This 3/4" lead free thermostat mixing valve is designed for residential, commercial and institutional environments and provides tempered glass water to bathrooms and bathrooms. Double throttle design controls both hot and cold water supply to mixed outlets. It consists of a lead-free brass body, threaded union connection, solid wax hydraulic principle thermostat, integrated filter washer, and check valve with locking mechanism for temperature settings. Mixed-outlet field temperature is 80 to 120 ℃ (27 to 49 ℃). Maximum pressure rated at 150 PSI (10.3 BAR). Watts 0559119 Features: -Lead free brass construction. -Heat activated technology provides precise temperature control locking mechanism listed in ASSE 1070, ASSE 1069, ASSE 1017, and UPC listings.

## Features

- Thermostat controls both hot and cold water
- Adjuster cap with lock function
- Integrated filter washer and check valve
- Asse Listed 1070, 1069, 1017

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Watts |
| Model Number | LFMMV-M1-UT |
| Product Dimensions | 16 x 11.43 x 6.6 cm; 1.01 kg |
| Material | Alloy, Copper, Lead |
| Are Batteries Included | No |
| Usage | スレッド式 |
| Item Weight | 1.01 Kilograms |

## Product Details

- **Material:** Alloy, Copper, Lead
- **Brand:** Watts
- **Item dimensions L x W x H:** 16 x 11.4 x 6.6 cm
- **Exterior Finish:** Copper
- **Inlet Connection Size:** 0.75 インチ
- **Inlet Connection Type:** Threaded
- **Outlet Connection Type:** ねじ込み式
- **Maximum Operating Pressure:** 1.5E+2 Pound per Square Inch
- **Number of Ports:** 1
- **Outlet Connection Size:** 4.5 インチ

## Images

![Watt LFMMVM1-UT 3/4" Mixing Valve Lead Free Temperature Regulation - 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.

## 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

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-17*