---
product_id: 449903862
title: "Watts LFMMVM1-UT 3/4'' Lead Free Thermostatic Mixing Shower Valve"
brand: "watts"
price: "R8052"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Watts"
url: https://www.desertcart.co.za/products/449903862-watts-lfmmvm1-ut-3-4-lead-free-thermostatic-mixing-shower
store_origin: ZA
region: South Africa
---

# Flow Rate 0.5-12 GPM 3/4" Lead-Free Brass Body Adjustable Temp 80°F-120°F Watts LFMMVM1-UT 3/4'' Lead Free Thermostatic Mixing Shower Valve

**Brand:** watts
**Price:** R8052
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your shower game with flawless temperature control!

## Quick Answers

- **What is this?** Watts LFMMVM1-UT 3/4'' Lead Free Thermostatic Mixing Shower Valve by watts
- **How much does it cost?** R8052 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/449903862-watts-lfmmvm1-ut-3-4-lead-free-thermostatic-mixing-shower)

## 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 Durable Build:** Premium 3/4" brass body ensures safety and longevity in every drop.
- • **Certified Safety Standards:** Meets ASSE 1017, 1069, 1070 & IAPMO cUPC for trusted anti-scald protection.
- • **Precision Temperature Control:** Set your perfect shower temp between 80°F and 120°F with ease.
- • **Effortless Installation & Adjustment:** Union thread ends and locking adjustment cap make setup and fine-tuning a breeze.
- • **Integrated Filtration & Check Valves:** Built-in filters and check valves protect your system and maintain water purity.

## Overview

The Watts LFMMVM1-UT 3/4" Lead Free Thermostatic Mixing Valve delivers precise, adjustable hot water mixing from 80°F to 120°F with flow rates between 0.5 and 12 GPM. Crafted from lead-free brass, it meets multiple rigorous safety certifications (ASSE 1017, 1069, 1070, IAPMO cUPC) ensuring anti-scald protection and durability. Designed for easy installation with union thread ends and a locking adjustment cap, it also features integral filter washers and check valves for enhanced system reliability.

## 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

- Watts
- LFMMVM1-UT
- Thermostatic Mixing Valve

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007VHHENG |
| ASIN  | B007VHHENG |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 4.6 4.6 out of 5 stars (80) |
| Customer reviews | 4.6 4.6 out of 5 stars (80) |
| Date First Available | 14 September 2014 |
| Date First Available  | 14 September 2014 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 1.01 Kilograms |
| Item model number | LFMMV-M1-UT |
| Item model number  | LFMMV-M1-UT |
| Manufacturer | Watts |
| Manufacturer  | Watts |
| Material | Copper Alloy |
| Maximum Pressure | 150 Pound per Square Inch |
| Part number | LFMMVM1-UT |
| Product Dimensions | 16 x 11.43 x 6.6 cm; 1.01 kg |
| Product Dimensions  | 16 x 11.43 x 6.6 cm; 1.01 kg |
| Size | 4.5 inches |
| Specification met | ASSE 1017, 1069, 1070, IAPMO |

## Product Details

- **Brand:** WATTS
- **Exterior finish:** Brass
- **Inlet connection size:** 0.75 Inches
- **Item dimensions L x W x H:** 16 x 11.4 x 6.6 centimeters
- **Material:** Copper Alloy

## Images

![Watts LFMMVM1-UT 3/4'' Lead Free Thermostatic Mixing Shower Valve - 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

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-13*