Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

WATTS 1 LF MMV-PEX Point-of-Use Mixing Valve, 1 in, Brass - Point-of-Use Mixing Valves
WATTSPoint-of-Use Mixing Valves

WATTS 1 LF MMV-PEX Point-of-Use Mixing Valve, 1 in, Brass

The WATTS Thermostatic Mixing Valve (MPN 1 LF MMV-PEX) is a point-of-use mixing valve with 1 in inlet and outlet connection sizes, constructed from brass. It features a Solid Wax Hydraulic Principle Thermostat for…

SKU 3G-OTH-596571

Also listed as: 1LFMMVPEX · 1 LF MMV PEX · 1-LF-MMV-PEX

Brand
WATTS
Item
1 LF MMV-PEX Point-of-Use Mixing Valve, 1 in, Brass
Category
Point-of-Use Mixing Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

WATTS
Manufacturer Part Number
1 LF MMV-PEX
Type
Brass
Outlet Connection Size
1 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

WATTS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Thermostatic Mixing Valve (MPN 1 LF MMV-PEX) is a point-of-use mixing valve with 1 in inlet and outlet connection sizes, constructed from brass. It features a Solid Wax Hydraulic Principle Thermostat for temperature regulation.

Frequently Asked Questions

What is a WATTS Thermostatic Mixing Valve used for?

A WATTS Thermostatic Mixing Valve blends hot and cold water to deliver a safe, consistent outlet temperature. It is used in point-of-use applications such as showers, sinks, and tubs to prevent scalding and provide thermal comfort in commercial and residential plumbing systems.

What are the specifications of the WATTS 1 LF MMV-PEX mixing valve?

The WATTS 1 LF MMV-PEX is a brass point-of-use mixing valve with 1 in inlet and 1 in outlet connection sizes. It uses a Solid Wax Hydraulic Principle Thermostat for precise temperature control. The manufacturer part number is 1 LF MMV-PEX.

Where to buy a WATTS Thermostatic Mixing Valve worldwide?

3G Electric supplies and delivers the WATTS Thermostatic Mixing Valve worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, wherever it is located.

How to install a WATTS Thermostatic Mixing Valve?

Install the WATTS valve in the hot water supply line to the fixture, ensuring flow direction matches the arrow on the body. Use approved thread sealant on connections and adjust the temperature setpoint per manufacturer guidelines. Always test outlet temperature after installation to verify safe operation.

Used in

Common applications for WATTS
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

WATTS Products

3G Electric supplies WATTS point-of-use mixing valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from WATTS

View all WATTS parts
Brass thermostatic mixing valve with 3/8 in inlet and outlet connections. Designed for point-of-use temperature control at a single fixture, helping to prevent scalding and maintain consistent water temperature in commercial or industrial settings
WATTS
Brass thermostatic mixing valve with 3/8 in inlet and outlet connections. Designed for point-of-use temperature control at a single fixture, helping to prevent scalding and maintain consistent water temperature in commercial or industrial settings
Thermostatic mixing valve with 1 in NPT inlet and outlet connections. Blends hot and cold water to a consistent outlet temperature for point-of-use applications such as sinks and showers. Uses a solid wax hydraulic principle thermostat for temperature control
WATTS
Thermostatic mixing valve with 1 in NPT inlet and outlet connections. Blends hot and cold water to a consistent outlet temperature for point-of-use applications such as sinks and showers. Uses a solid wax hydraulic principle thermostat for temperature control
This thermostatic mixing valve blends hot and cold water to deliver a consistent outlet temperature for point-of-use applications such as sinks and showers. It features 3/4 in inlet and outlet connections and includes integral filter washers
WATTS
This thermostatic mixing valve blends hot and cold water to deliver a consistent outlet temperature for point-of-use applications such as sinks and showers. It features 3/4 in inlet and outlet connections and includes integral filter washers
The WATTS LFMMV-M1-UT is a point-of-use thermostatic mixing valve with 1/2 in NPT inlet and outlet connections. It blends hot and cold water to a consistent outlet temperature for scald protection. Integral filter washers are included. Typical applications include sinks and showers in commercial and institutional facilities
WATTS
The WATTS LFMMV-M1-UT is a point-of-use thermostatic mixing valve with 1/2 in NPT inlet and outlet connections. It blends hot and cold water to a consistent outlet temperature for scald protection. Integral filter washers are included. Typical applications include sinks and showers in commercial and institutional facilities
This point-of-use thermostatic mixing valve blends hot and cold water to a consistent outlet temperature. It features a solid wax hydraulic principle thermostat and 1/2-inch inlet and outlet connections. Commonly used at sinks and showers to prevent scalding
WATTS
This point-of-use thermostatic mixing valve blends hot and cold water to a consistent outlet temperature. It features a solid wax hydraulic principle thermostat and 1/2-inch inlet and outlet connections. Commonly used at sinks and showers to prevent scalding
Brass point-of-use thermostatic mixing valve with 1-inch inlet and outlet connections. Blends hot and cold water to a consistent temperature for applications such as showers, sinks, and process water. Includes integrated check valves to prevent backflow
WATTS
Brass point-of-use thermostatic mixing valve with 1-inch inlet and outlet connections. Blends hot and cold water to a consistent temperature for applications such as showers, sinks, and process water. Includes integrated check valves to prevent backflow
Brass point-of-use mixing valve with 3/8 in inlet and outlet connections. Blends hot and cold water to deliver a consistent outlet temperature. Used in applications such as sinks and showers to help prevent scalding
WATTS
Brass point-of-use mixing valve with 3/8 in inlet and outlet connections. Blends hot and cold water to deliver a consistent outlet temperature. Used in applications such as sinks and showers to help prevent scalding
This WATTS thermostatic mixing valve is constructed of brass and features 3/8 in male compression fittings for inlet and outlet connections. It blends hot and cold water to deliver a consistent outlet temperature, suitable for point-of-use applications such as sinks, showers, and lavatories in commercial and residential settings
WATTS
This WATTS thermostatic mixing valve is constructed of brass and features 3/8 in male compression fittings for inlet and outlet connections. It blends hot and cold water to deliver a consistent outlet temperature, suitable for point-of-use applications such as sinks, showers, and lavatories in commercial and residential settings