Watts - LFMMV-M1-UT - 3/4 Union Inlet Type Thermostatic Mixing Valve,No Lead Copper Silicon Alloy, 13 gpm

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: 456665994

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Details

Material
Alloy Copper
Brand
WATTS
Item dimensions L x W x H
16 x 11.4 x
Exterior Finish
Copper
Inlet Connection Type
Flange
Outlet Connection Type
Flange

🔒Locking adjustment cap

⚙️13 GPM high flow rate

🛡️Integral filter washers & check valves

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

🔥 Stay in control with Watts – where safety meets seamless comfort! 🔥

SECURE ADJUSTMENT - Locking cap prevents accidental temperature changes
CERTIFIED RELIABILITY - Meets ASSE 1070, 1069, 1017 standards for peace of mind
DURABLE NO LEAD ALLOY - Safe, corrosion-resistant copper silicon alloy build
PRECISION TEMPERATURE CONTROL - Thermostatic valve balances hot & cold water seamlessly
BUILT IN FILTRATION PROTECTION - Integral filter washers and check valves ensure longevity

The Watts LFMMV-M1-UT is a 3/4 inch union inlet thermostatic mixing valve crafted from a no-lead copper silicon alloy, delivering up to 13 gallons per minute. Featuring a locking adjustment cap, integral filter washers, and check valves, it ensures precise temperature control, durability, and compliance with ASSE standards for professional-grade water safety and performance.

Specifications

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

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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