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

Q: What is the min./max. Pressure for both inlets? And is there a drop in outlet pressure?

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.?

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?

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?

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.

4.5/5

Product ID: 733093789

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Details

Material
Alloy Copper
Brand
Watts
Item dimensions L x W x H
16 x 11.4 x cm
Exterior Finish
Copper
Inlet Connection Size
0.75 インチ
Inlet Connection Type
Threaded

🔒Lockable adjuster cap

⚙️Precision temp control

🛡️Built-in filter & check valve

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

Description

🔥 Lock in your perfect flow, lead-free and hassle-free!

CERTIFIED RELIABILITY - Meets ASSE standards 1070, 1069, and 1017 for trusted performance and safety.
SECURE LOCKING ADJUSTER - Lock function on the cap ensures your ideal setting stays put—no surprises.
COMPACT DURABLE DESIGN - Robust alloy and copper build in a sleek 16x11.43x6.6 cm frame, weighing just over 1kg.
INTEGRATED FILTRATION SHIELD - Built-in filter washer and check valve protect your system from debris and backflow.
PRECISION TEMPERATURE MASTERY - Thermostat expertly balances hot & cold water for perfect comfort.

The Watts LFMMVM1-UT 3/4" Mixing Valve offers precise temperature regulation with a thermostat that balances hot and cold water. Featuring a lockable adjuster cap, integrated filter washer, and check valve, it ensures durability and system protection. Certified to ASSE standards 1070, 1069, and 1017, this compact, lead-free valve combines safety and performance in a lightweight alloy and copper design.

Specifications

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
Item Weight	1.01 Kilograms

Have a Question? See What Others Asked

What is the min./max. Pressure for both inlets? And is there a drop in outlet pressure?

What is the min./max. hot water temp. inlet? and how it will work if the hot temp. drop below the min.?

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?

The temperature adjustment knob will not turn. Is there a lock or trick to this?

Common Questions

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