Watts Mixing Valves | Raptor Supplies United Kingdom
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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 -

LF70A Series, Mixing Valve, Lead-Free Brass

WATTS 1/2 LF70A-FA
WATTS 3/4 LF70AB
StyleModelFlow RateInlet SizeOutlet SizeOverall HeightOverall WidthPrice (inc. VAT)
A1/2 LF70A-F5.5 gpm at 10 psi1/2"1/2"3 11/16"2.031"£100.93
B3/4 LF70A10 gpm at 10 psi3/4"3/4"4.125"2.75"£146.82
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.

WATTS LFMMV-M1-QCA
WATTS LFUSGB-M2-SCB
WATTS LFMMV-M1-UTC
WATTS LFMMV-M1-UTD
WATTS LFMMV-M1-USE
WATTS LFUSGB-M2-QCF
WATTS 0006271G
WATTS LFMMV-M1-QCH
WATTS LF1170-M2-UTI
WATTS LF1170-M2-USJ
WATTS LF1170-M2-QCK
StyleModelTemp. RangeFlow RateInlet SizeInlet TypeOutlet SizeOutlet TypeOverall HeightOverall WidthPrice (inc. VAT)
ALFMMV-M1-QC80 Degrees to 120 Degrees F13 gpm3/4"Quick Connect3/4"Quick Connect6.437"6 15/16"£218.36
BLFUSGB-M2-SC80 Degrees to 120 Degrees F2.25 gpm3/8"Compression3/8"Compression3.375"3.187"-
RFQ
CLFMMV-M1-UT80 Degrees to 120 Degrees F13 gpm3/4"Union3/4"Threaded5.437"4.875"£267.09
DLFMMV-M1-UT80 Degrees to 120 Degrees F13 gpm1/2"Union1/2"Threaded5.437"4.875"£228.92
ELFMMV-M1-US80 Degrees to 120 Degrees F13 gpm1"Union1"Solder5.875"5 13/16"£304.51
FLFUSGB-M2-QC80 Degrees to 120 Degrees F2.25 gpm3/8"Quick Connect3/8"Quick Connect4"3.25"£244.08
G000627180 Degrees to 120 Degrees F12 GPM1"Solvent Weld1"Solvent Weld5 13/16"5 11/16"£464.36
HLFMMV-M1-QC80 Degrees to 120 Degrees F13 gpm1"Quick Connect1"Quick Connect6.5"7.125"£287.40
G000627080 Degrees to 120 Degrees F12 GPM3/4"Solvent Weld3/4"Solvent Weld5 9/16"5.25"£302.39
G000626980 Degrees to 120 Degrees F12 GPM1/2"Solvent Weld1/2"Solvent Weld5 5/16"4.75"£199.97
ALFMMV-M1-QC80 Degrees to 120 Degrees F13 gpm1/2"Quick Connect1/2"Quick Connect6.25"6.625"£238.17
CLFMMV-M1-UT80 Degrees to 120 Degrees F13 gpm1"Union1"Threaded5.625"5 5/16"£332.46
ILF1170-M2-UT90 Degrees to 160 Degrees F23 gpm1"Union1"Threaded5.625"5 13/16"£321.77
JLF1170-M2-US90 Degrees to 160 Degrees F23 gpm1"Union1"Solder5.875"5 13/16"£320.30
KLF1170-M2-QC90 Degrees to 160 Degrees F23 gpm1"Quick Connect1"Quick Connect6.5"7.125"£257.67
KLF1170-M2-QC90 Degrees to 160 Degrees F23 gpm1/2"Quick Connect1/2"Quick Connect6.25"6.625"£251.02
KLF1170-M2-QC90 Degrees to 160 Degrees F23 gpm3/4"Quick Connect3/4"Quick Connect6.437"6 15/16"£151.67
WATTS -

Mixing Valve, Brass

WATTS 1 LF MMV-PEXA
WATTS 3/4 LF MMV-USB
WATTS 1/2 LF 1170-USC
WATTS 1/2 LF 1170-UT-2 1/2D
WATTS 1/2 LF1170M2-PEXE
StyleModelTemp. RangeFlow RateInlet SizeInlet TypeOutlet SizeOutlet TypeOverall HeightOverall WidthPrice (inc. VAT)
A1 LF MMV-PEX80 Degrees to 120 Degrees F20 gpm at 125 psi1"PEX1"PEX5.875"5.875"£198.32
B3/4 LF MMV-US80 Degrees to 120 Degrees F0.5 to 20 gpm3/4"Solder3/4"Solder5.437"4.875"£260.40
A1/2 LF MMV-PEX80 Degrees to 120 Degrees F20 gpm at 125 psi1/2"PEX1/2"PEX5 9/16"5.25"£240.29
A3/4 LF MMV-PEX80 Degrees to 120 Degrees F20 gpm at 125 psi3/4"PEX3/4"PEX5 11/16"5.5"£208.84
C1/2 LF 1170-US90 Degrees to 160 Degrees F0.5 to 23 gpm1/2"Solder1/2"Solder5.437"4.875"£250.71
D1/2 LF 1170-UT-2 1/2"90 Degrees to 160 Degrees F0.5 to 23 gpm1/2"FNPT1/2"FNPT5.437"4.875"£260.53
E1/2 LF1170M2-PEX90 Degrees to 160 Degrees F23 gpm1/2"FNPT1/2"FNPT5 9/16"5.25"£272.27
C3/4 LF 1170-US90 Degrees to 160 Degrees F0.5 to 23 gpm3/4"Solder3/4"Solder5.437"4.875"£283.71
WATTS -

Thermostatic Mixing Valves

WATTS LFMMVM1-QC 1A
WATTS LFMMVM1-UT 1B
WATTS LFMMVM1-PEX 1C
WATTS LFMMVM1-US 1D
WATTS LFMMVM1-CPVC 1E
WATTS LFMMVM1-UT (W/PRESS) 1F
WATTS LFMMVM1-UT (W/PRESS) 3/4G
WATTS LFMMVM1-US 1/2H
WATTS LFMMVM1-UT 1/2I
WATTS LFMMVM1-PEX-Z4 1/2J
WATTS LFMMVM1-PEX 3/4K
WATTS LFMMV-HTK 3/4L
WATTS LFUSG-B-M2M
StyleModelOutlet SizeBody MaterialCapacityOutlet Temperature AccuracyOutlet TypeFlow RateInlet ConnectionInlet SizePrice (inc. VAT)
ALFMMVM1-QC 11"Lead Free Copper Silicon Alloy13 Gpm-Quick Connect13 gpm--£707.96
BLFMMVM1-UT 11"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 7° FFemale Threaded0.5 to 20 gpmFemale Threaded1"£301.25
CLFMMVM1-PEX 11"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 3° FCrimped0.5 to 20 gpmCrimped1"£672.52
DLFMMVM1-US 11"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 7° FSocket0.5 to 20 gpmSocket1"£301.25
ELFMMVM1-CPVC 11"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi-Union CPVC0.5 to 20 gpm--£672.52
FLFMMVM1-UT (W/PRESS) 11/2"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 7° FPress0.5 to 13 GpmPress1"£349.36
GLFMMVM1-UT (W/PRESS) 3/41/2"Lead Free Copper Silicon Alloy--Press0.5 to 13 Gpm--£299.08
DMMV-US-M1 120F 1/21/2"--+/- 3° FUnion Solder-Union Solder1/2"£300.41
CLFMMVM1-PEX 1/21/2"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 7° FCrimped0.5 to 20 gpmCrimped1/2"£409.95
HLFMMVM1-US 1/21/2"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Socket0.5 to 13 Gpm--£251.03
ILFMMVM1-UT 1/21/2"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Female Threaded0.5 to 13 Gpm--£251.03
ALFMMVM1-QC 1/21/2"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Quick Connect0.5 to 13 Gpm--£446.21
ELFMMVM1-CPVC 1/21/2"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Push0.5 to 13 Gpm--£409.95
JLFMMVM1-PEX-Z4 1/21/2"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Crimped0.5 to 13 Gpm--£397.88
FLFMMVM1-UT (W/PRESS) 1/21/2"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi+/- 7° FPress0.5 to 13 GpmPress1/2"£268.14
ELFMMVM1-CPVC 3/43/4"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Push0.5 to 13 Gpm--£511.43
KLFMMVM1-PEX 3/43/4"Lead Free Copper Silicon Alloy20 Gpm at 125 Psi-Crimped0.5 to 20 gpm--£511.43
LLFMMV-HTK 3/43/4"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi--0.5 to 13 Gpm--£263.50
ILFMMVM1-UT 3/43/4"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Female Threaded0.5 to 13 Gpm--£276.19
HLFMMVM1-US 3/43/4"Lead Free Copper Silicon Alloy13 Gpm at 45 Psi-Socket0.5 to 13 Gpm--£276.19
ALFMMVM1-QC 3/43/4"Lead Free Copper Silicon Alloy13 Gpm-Quick Connect13 gpm--£548.48
MLFUSG-B-M23/8"Lead Free Brass2.25 Gpm-Compression Joint0.25 to 2.25 Gpm--£185.59
WATTS -

Master Mixing Valves

WATTS LFN170M3 1A
StyleModelCapacityFlow RateInlet SizeOutlet Temperature AccuracyPrice (inc. VAT)
ALFN170M3 168 gpm At 45 psi4 to 68 gpm1"+/- 5° F£2,042.54
ALFN170M3 1 1/495 gpm At 45 psi4 to 95 gpm1 1/4"+/- 7° F£3,152.40
ALFN170M3 1 1/2105 gpm At 45 psi5 to 105 gpm1 1/2"+/- 7° F£3,448.81
ALFN170M3 2125 gpm At 45 psi7 to 125 gpm2"+/- 7° F£5,170.77
WATTS -

Hot Water Extender Mixing Valves

WATTS LFL70A 3/4A
WATTS LF70AT 3/4B
WATTS LFL70AT 1/2C
WATTS LFL70A-F 1/2D
StyleModelHot Inlet Temperature RangeInlet ConnectionOutlet ConnectionOutlet SizeOutlet TypePrice (inc. VAT)
ALFL70A 3/4---3/4"Socket£368.88
ALF70A 3/4---3/4"Socket£300.41
BLF70AT 3/4---3/4"Female Threaded£350.35
CLFL70AT 1/2100 to 130° FFemale ThreadedFemale Threaded1/2"Female Threaded£333.44
DLFL70A-F 1/2100 to 130° FSocketSocket1/2"Socket£318.96
DLF70A-F 1/2120 to 160° FSocketSocket1/2"Socket£259.34
CLF70AT 1/2120 to 160° FFemale ThreadedFemale Threaded1/2"Female Threaded£286.73
WATTS -

Mixing Valves

WATTS 3/4 LF 1170 PEXA
WATTS 1 LF1170M2-UT-PRESSB
WATTS 1/2 LFMMVM1-UT-PRESSC
WATTS 1/2 LF MMV-USD
WATTS 3/8 LFUSGB-M2E
WATTS 3/4 LF 1170-UT- M2 3/4F
StyleModelOverall WidthBody MaterialFlow RateTemp. RangeInlet SizeInlet TypeOutlet SizeOutlet TypePrice (inc. VAT)
A3/4 LF 1170 PEX--------£258.45
RFQ
B1 LF1170M2-UT-PRESS--------£429.24
B3/4 LF1170M2-UT-PRESS--------£395.26
C1/2 LFMMVM1-UT-PRESS--------£355.61
D1/2 LF MMV-US--------£231.25
RFQ
B1/2 LF1170M2-UT-PRESS--------£377.50
C1 LFMMVM1-UT-PRESS--------£437.09
C3/4 LFMMVM1-UT-PRESS--------£381.49
E3/8 LFUSGB-M23.187"Low-Lead Brass0.5 to 2.5 gpm80 Degrees to 120 Degrees F3/8"Compression3/8"Compression£276.56
F3/4 LF 1170-UT- M2 3/4"4.875"Brass0.5 to 23 gpm90 Degrees to 160 Degrees F3/4"FNPT3/4"FNPT£346.84
WATTS -

Temperature Control Valve, Lead Free Copper Silicon Alloy

WATTS 0006274A
StyleModelInlet SizeOutlet SizeOverall HeightOverall WidthPrice (inc. VAT)
A00062741"1"5 13/16"5 11/16"£420.01
A00062721/2"1/2"5 5/16"4.75"£273.23
A00062733/4"3/4"5 9/16"5.25"£337.79
WATTS -

Thermostatic Mixing Valve

Thermostatic Mixing Valve
ModelItemPrice (inc. VAT)
3/8 LFUSG-B-SC M3CN2TNX£354.86
WATTS -

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

Hot Water Mixing Valve, Inlet 100 To 130 Deg. F, 3/4 Inch Outlet
ModelItemPrice (inc. VAT)
LFL70AT 3/4BR6ERZ£411.57

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.

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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