WATTS Mixing Valves

Used with water heaters to mix hot and cold water for a safer outlet temperature and to prevent scalding & thermal shock. Follow ASSE and CSA standards and have a maximum flow rate of 23 gpm

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Watts mixing valves are constructed in accordance with American Society of Sanitary Engineering (ASSE) standards 1016, 1017, 1069 and 1070. These lead-free valves are used for mixing cold & hot...Read more
WATTS -

Thermostatic Mixing Valves

StyleModelBody MaterialCapacityFlow RateInlet ConnectionInlet SizeMfr. SeriesOutlet ConnectionOutlet SizePrice (ex. VAT)
AMMV-US-M1 120F 1/2---Union Solder1/2"MMVUnion Solder1/2"€295.59
BLFUSG-B-M2Lead Free Brass2.25 Gpm0.25 to 2.25 Gpm--LFUSG-B-3/8"€182.61
CLFMMVM1-PEX 1Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpmCrimped1"LFMMVCrimped1"€661.72
DLFMMVM1-QC 3/4Lead Free Copper Silicon Alloy13 Gpm13 gpm--LFMMV-3/4"€539.67
CLFMMVM1-PEX 1/2Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpmCrimped1/2"LFMMVCrimped1/2"€403.37
ELFMMVM1-UT 3/4Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-3/4"€271.75
FLFMMVM1-US 1/2Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-1/2"€247.00
ELFMMVM1-UT 1/2Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-1/2"€247.00
GLFMMV-HTK 3/4Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-3/4"€259.27
HLFMMVM1-PEX-Z4 1/2Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-1/2"€391.49
DLFMMVM1-QC 1Lead Free Copper Silicon Alloy13 Gpm13 gpm--LFMMV-1"€696.58
DLFMMVM1-QC 1/2Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-1/2"€439.04
FLFMMVM1-US 3/4Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-3/4"€271.75
ILFMMVM1-CPVC 1Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpm--LFMMV-1"€661.72
ILFMMVM1-CPVC 3/4Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-3/4"€503.21
ILFMMVM1-CPVC 1/2Lead Free Copper Silicon Alloy13 Gpm at 45 Psi0.5 to 13 Gpm--LFMMV-1/2"€403.37
JLFMMVM1-UT (W/PRESS) 1Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 13 GpmPress1"LFMMVPress1/2"€343.74
KLFMMVM1-UT (W/PRESS) 3/4Lead Free Copper Silicon Alloy-0.5 to 13 Gpm--LFMMV-1/2"€294.27
JLFMMVM1-UT (W/PRESS) 1/2Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 13 GpmPress1/2"LFMMVPress1/2"€263.84
LLFMMVM1-UT 1Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpmFemale Threaded1"LFMMVFemale Threaded1"€296.41
ALFMMVM1-US 1Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpmSocket1"LFMMVSocket1"€296.41
MLFMMVM1-PEX 3/4Lead Free Copper Silicon Alloy20 Gpm at 125 Psi0.5 to 20 gpm--LFMMV-3/4"€503.21
StyleModelCapacityFlow RateInlet SizeOutlet Temperature AccuracyPrice (ex. VAT)
ALFN170M3 168 gpm At 45 psi4 to 68 gpm1"+/- 5° F€2,009.73
ALFN170M3 1 1/495 gpm At 45 psi4 to 95 gpm1 1/4"+/- 7° F€3,101.76
ALFN170M3 1 1/2105 gpm At 45 psi5 to 105 gpm1 1/2"+/- 7° F€3,393.41
ALFN170M3 2125 gpm At 45 psi7 to 125 gpm2"+/- 7° F€5,087.71
WATTS -

Hot Water Extender Mixing Valves

StyleModelHot Inlet Temperature RangeInlet ConnectionOutlet ConnectionOutlet SizeOutlet TypePrice (ex. VAT)
ALF70AT 3/4---3/4"Female Threaded€344.72
BLF70A 3/4---3/4"Socket€295.59
BLFL70A 3/4---3/4"Socket€362.95
CLFL70A-F 1/2100 to 130° FSocketSocket1/2"Socket€313.84
DLFL70AT 1/2100 to 130° FFemale ThreadedFemale Threaded1/2"Female Threaded€328.08
CLF70A-F 1/2120 to 160° FSocketSocket1/2"Socket€255.17
DLF70AT 1/2120 to 160° FFemale ThreadedFemale Threaded1/2"Female Threaded€282.12
StyleModelInlet SizeOutlet SizeOverall HeightOverall WidthPrice (ex. VAT)
A00062741"1"5 13/16"5 11/16"€277.31
A00062721/2"1/2"5 5/16"4.75"€240.52
A00062733/4"3/4"5 9/16"5.25"€249.69
WATTS -

LF70A Series, Mixing Valve, Lead-Free Brass

StyleModelFlow RateInlet SizeOutlet SizeOverall HeightOverall WidthPrice (ex. VAT)
A1/2 LF70A-F5.5 gpm at 10 psi1/2"1/2"3 11/16"2.031"€100.38
B3/4 LF70A10 gpm at 10 psi3/4"3/4"4.125"2.75"€152.32
WATTS -

Thermostatic Mixing Valve, Lead Free Copper Silicon Alloy

Watts thermostatic mixing valves regulate the water temperature by mixing cold and hot water simultaneously. Watts valves are used with boiler and tempered water systems for in-floor radiant heating, soil heating, emergency shower and municipal water processing applications. These thermostatic mixing valves allow the water heater to operate at higher temperatures, extending the effective system flow rate at the valve output. This feature increases productivity. Watts mixing valves are made of lead-free copper silicon alloy to facilitate excellent manufacturing capabilities for forging, casting & machining material stocks. Watts thermostatic mixing valves reduce the size / BTU requirements, providing capacity for peak system demands. These UPC-listed valves deliver a maximum flow rate of 23 gpm and are capable of withstanding temperatures & pressures up to 160 degrees F & 150 psi, respectively. Choose from a wide range of these thermostatic mixing valves, available in union, solvent weld, quick connect and compression inlet options on Raptor Supplies. Watts heavy duty float valves and adjustable pressure relief valves are also available for various commercial water supply regulation applications.

StyleModelFlow RateInlet SizeInlet TypeOutlet SizeOutlet TypeOverall HeightOverall WidthTemp. RangePrice (ex. VAT)
ALFUSGB-M2-QC2.25 gpm3/8"Quick Connect3/8"Quick Connect4"3.25"80 Degrees to 120 Degrees F€240.16
BLFUSGB-M2-SC2.25 gpm3/8"Compression3/8"Compression3.375"3.187"80 Degrees to 120 Degrees F-
RFQ
C000626912 GPM1/2"Solvent Weld1/2"Solvent Weld5 5/16"4.75"80 Degrees to 120 Degrees F€154.14
C000627112 GPM1"Solvent Weld1"Solvent Weld5 13/16"5 11/16"80 Degrees to 120 Degrees F€398.12
C000627012 GPM3/4"Solvent Weld3/4"Solvent Weld5 9/16"5.25"80 Degrees to 120 Degrees F€222.25
DLFMMV-M1-QC13 gpm1/2"Quick Connect1/2"Quick Connect6.25"6.625"80 Degrees to 120 Degrees F€226.54
ELFMMV-M1-QC13 gpm1"Quick Connect1"Quick Connect6.5"7.125"80 Degrees to 120 Degrees F€295.47
FLFMMV-M1-UT13 gpm3/4"Union3/4"Threaded5.437"4.875"80 Degrees to 120 Degrees F€279.53
DLFMMV-M1-QC13 gpm3/4"Quick Connect3/4"Quick Connect6.437"6 15/16"80 Degrees to 120 Degrees F€205.70
FLFMMV-M1-UT13 gpm1"Union1"Threaded5.625"5 5/16"80 Degrees to 120 Degrees F€337.61
GLFMMV-M1-UT13 gpm1/2"Union1/2"Threaded5.437"4.875"80 Degrees to 120 Degrees F€227.38
HLFMMV-M1-US13 gpm1"Union1"Solder5.875"5 13/16"80 Degrees to 120 Degrees F€317.84
ILF1170-M2-QC23 gpm3/4"Quick Connect3/4"Quick Connect6.437"6 15/16"90 Degrees to 160 Degrees F€134.10
JLF1170-M2-US23 gpm1"Union1"Solder5.875"5 13/16"90 Degrees to 160 Degrees F€305.91
ILF1170-M2-QC23 gpm1/2"Quick Connect1/2"Quick Connect6.25"6.625"90 Degrees to 160 Degrees F€246.98
ILF1170-M2-QC23 gpm1"Quick Connect1"Quick Connect6.5"7.125"90 Degrees to 160 Degrees F€260.88
KLF1170-M2-UT23 gpm1"Union1"Threaded5.625"5 13/16"90 Degrees to 160 Degrees F€325.17
WATTS -

Mixing Valves

StyleModelBody MaterialFlow RateInlet SizeInlet TypeOutlet SizeOutlet TypeOverall HeightOverall WidthPrice (ex. VAT)
A1/2 LF MMV-US--------€227.73
B3/4 LF 1170 PEX--------€269.16
C1 LF1170M2-UT-PRESS--------€428.02
C1/2 LF1170M2-UT-PRESS--------€377.59
C3/4 LF1170M2-UT-PRESS--------€400.20
D1 LFMMVM1-UT-PRESS--------€475.36
D3/4 LFMMVM1-UT-PRESS--------€381.06
D1/2 LFMMVM1-UT-PRESS--------€359.58
E3/4 LF 1170-UT- M2 3/4"Brass0.5 to 23 gpm3/4"FNPT3/4"FNPT5.437"4.875"€334.67
F3/8 LFUSGB-M2Low-Lead Brass0.5 to 2.5 gpm3/8"Compression3/8"Compression3.375"3.187"€272.12
WATTS -

Mixing Valve, Brass

StyleModelFlow RateInlet SizeInlet TypeOutlet SizeOutlet TypeOverall HeightOverall WidthTemp. RangePrice (ex. VAT)
A3/4 LF MMV-US0.5 to 20 gpm3/4"Solder3/4"Solder5.437"4.875"80 Degrees to 120 Degrees F€264.47
B1/2 LF 1170-UT-2 1/2"0.5 to 23 gpm1/2"FNPT1/2"FNPT5.437"4.875"90 Degrees to 160 Degrees F€264.04
C1/2 LF 1170-US0.5 to 23 gpm1/2"Solder1/2"Solder5.437"4.875"90 Degrees to 160 Degrees F€258.46
C3/4 LF 1170-US0.5 to 23 gpm3/4"Solder3/4"Solder5.437"4.875"90 Degrees to 160 Degrees F€289.69
D1/2 LF MMV-PEX20 gpm at 125 psi1/2"PEX1/2"PEX5 9/16"5.25"80 Degrees to 120 Degrees F€246.88
D3/4 LF MMV-PEX20 gpm at 125 psi3/4"PEX3/4"PEX5 11/16"5.5"80 Degrees to 120 Degrees F€219.42
D1 LF MMV-PEX20 gpm at 125 psi1"PEX1"PEX5.875"5.875"80 Degrees to 120 Degrees F€175.16
E1/2 LF1170M2-PEX23 gpm1/2"FNPT1/2"FNPT5 9/16"5.25"90 Degrees to 160 Degrees F€284.11
WATTS -

Hot Water Mixing Valve, Inlet 100 To 130 Deg. F, 3/4 Inch Outlet

ModelItemPrice (ex. VAT)
LFL70AT 3/4BR6ERZ€404.96
WATTS -

Thermostatic Mixing Valve

ModelItemPrice (ex. VAT)
3/8 LFUSG-B-SC M3CN2TNX€368.50

Features

  • Watts mixing valves have integral check valves and filter gaskets in both the hot and cold water inlets to prevent cross flow and ensure that water flows in one direction only.
  • The double throttling design responds quickly to changes in water temperature.
  • The solid wax hydraulic principle thermostat regulates both hot and cold water and is designed to provide consistent mixing of hot and cold fluids.
  • Heat traps are used in thermostatic valves to reduce convection loss (also known as thermosiphon) and thus, increase system efficiency.
  • In the event that the cold water supply is compromised, the flow of mixed water is safely restricted.
  • Sweat or threaded connections are available.

Watts Master Mixing Valves

  • These thermostatic mixing valves are used to mix hot and cold water to bring down the service water to a safe and comfortable level for the building's distribution piping system.
  • They feature a copper paraffin thermostat to sense and adjust the outlet temperature, a single-seat design and a vandal-resistant locking mechanism to prevent tampering with temperature settings.
  • The interior walls of these units are made of polysulfone that resists excessive heat, corrosion and liming.
  • They have a lead-free brass construction for excellent corrosion resistance and are capable of withstanding temperatures up to 180 degrees F.

Powers Mixing Valves

  • HydroGuard Series mixing valves are designed to blend hot and cold water by utilising an advanced thermal actuation technology for tepid water delivery to emergency fixtures.
  • They include a unique internal cold water bypass and check valve to ensure the delivery of cold water flow in the event of hot water failure.
  • Power's valves feature a booster funnel to channel water flow directly around the paraffin actuator helps improve response time and enhances flow control.
  • They are also included with triple-duty check stops to prevent cross-flow and provide complete isolation for repair and maintenance.

Working Mechanism

  • When tempered water is used, a thermostat in the valve's mixing chamber detects the outlet temperature and automatically positions a seat assembly, which controls the flow of hot and cold water supplied to the mixing chamber.
  • If the temperature of the mixed outlet rises, the thermostat will expand, moving the seat assembly to allow the cold water inlet port to open more fully while restricting the hot water inlet port.
  • If the mixed outlet temperature drops, the thermostat contracts, moving the seat assembly to allow the hot water inlet port to open more fully while restricting the cold water inlet port.
  • In both cases, the temperature of the mixed outlet water is automatically and continuously maintained at the preset temperature within the valve's tolerances.
  • When the cold or hot water supply fails, the seat assembly moves to an extreme position, cutting off the hot or cold inlet water port.
  • A mechanical adjustment allows you to select the desired outlet water temperature within the valve's range.

Standards and Approvals

  • ASSE 1016
  • ASSE 1017
  • ASSE 1069
  • ASSE 1070

Frequently Asked Questions

How do you adjust a thermostatic mixing valve?

  • Remove the plastic cap on top of the valve and adjust with a close-fitting spanner to adjust the temperature supply.
  • To raise the temperature, turn the knob anti-clockwise.
  • To reduce the temperature, turn the knob clockwise.

Do I need a thermostatic mixing valve?

To control water temperature at the delivery point and prevent scalding, you must install thermostatic mixing valves on your water heater. This will enable you to raise the heater temperature, killing possible bacteria.

How do you adjust the wattage on a water mixing valve?

  • Loosen the locking cap screw with a hex wrench to adjust the valve setting.
  • To adjust the temperature, lift the cap by 1/4 inches.
  • Turn counterclockwise to raise the temperature.
  • To reduce the temperature, turn the knob clockwise.

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