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  • 3/4" Sweat Union Mixing Valve (LF) Product Image
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    3/4" Sweat Union Mixing Valve (LF) AM101-US-1LF 3/4" Sweat Union Mixing Valve (LF)
    SKU: AM101-US-1LF
    Brand: Honeywell-Sparco
    (17)
    $102.95 each
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  • 1/2" Lead Free Union Sweat Mixing Valve<br>(70&#176;F-145&#176;F) Product Image
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    1/2" Lead Free Union Sweat Mixing Valve (70°F-145°F) AM100-US-1LF 1/2" Lead Free Union Sweat Mixing Valve (70°F-145°F)
    SKU: AM100-US-1LF
    Brand: Honeywell-Sparco
    (33)
    $86.95 each
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  • 3/4" Press MIXCAL <br>3-Way Thermostatic<br>Mixing Valve w/ Gauge Product Image
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    3/4" Press MIXCAL 3-Way Thermostatic Mixing Valve w/ Gauge 521516A 3/4" Press MIXCAL 3-Way Thermostatic Mixing Valve w/ Gauge
    SKU: 521516A
    Brand: Caleffi
    (3)
    $119.99 each
    216
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  • 3/4" Sweat 5003<br>Mixing Valve (Low Lead) Product Image
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    3/4" Sweat 5003 Mixing Valve (Low Lead) 5003-C3 3/4" Sweat 5003 Mixing Valve (Low Lead)
    SKU: 5003-C3
    Brand: Taco
    (32)
    $84.59 each
    219
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  • 3/4" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F) Product Image
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    3/4" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F) AM101-USTG-1LF 3/4" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F)
    SKU: AM101-USTG-1LF
    Brand: Honeywell-Sparco
    (3)
    $127.95 each
    122
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  • AM-1 Repair Kit<br>STD and R Models Product Image
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    AM-1 Repair Kit STD and R Models AM-1-025RP AM-1 Repair Kit STD and R Models
    SKU: AM-1-025RP
    Brand: Honeywell-Sparco
    (25)
    $33.48 each
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  • 3/4" Sweat Union 5003 Mixing Valve w/ Gauge (Low Lead) Product Image
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    3/4" Sweat Union 5003 Mixing Valve w/ Gauge (Low Lead) 5003-C3-G 3/4" Sweat Union 5003 Mixing Valve w/ Gauge (Low Lead)
    SKU: 5003-C3-G
    Brand: Taco
    (13)
    $108.99 each
    147
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  • 1/2" Union Sweat Mixing Valve, 80 to 120F (Lead Free) Product Image
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    1/2" Union Sweat Mixing Valve, 80 to 120F (Lead Free) MVS050 1/2" Union Sweat Mixing Valve, 80 to 120F (Lead Free)
    SKU: MVS050
    Brand: Bluefin
    $53.99 each
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  • 1/2" Union Female Threaded Mixing Valve, 80 to 120F (Lead Free) Product Image
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    1/2" Union Female Threaded Mixing Valve, 80 to 120F (Lead Free) MVT050 1/2" Union Female Threaded Mixing Valve, 80 to 120F (Lead Free)
    SKU: MVT050
    Brand: Bluefin
    $53.99 each
    105
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  • 3/4" Female NPT Lead Free Mixing Valve (70&#176;F-145&#176;F) Product Image
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    3/4" Female NPT Lead Free Mixing Valve (70°F-145°F) AM101-1LF 3/4" Female NPT Lead Free Mixing Valve (70°F-145°F)
    SKU: AM101-1LF
    Brand: Honeywell-Sparco
    (18)
    $91.95 each
    323
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  • 3/8" LFUSG-B-M2 Under Sink Guardian Mixing Valve (Lead Free) Product Image
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    3/8" LFUSG-B-M2 Under Sink Guardian Mixing Valve (Lead Free) 0204143 3/8" LFUSG-B-M2 Under Sink Guardian Mixing Valve (Lead Free)
    SKU: 0204143
    Brand: Watts
    (6)
    $86.99 each
    206
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  • AM-1 Gasket Kit for Series Mixing Valve Product Image
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    AM-1 Gasket Kit for Series Mixing Valve AMU200-RP AM-1 Gasket Kit for Series Mixing Valve
    SKU: AMU200-RP
    Brand: Honeywell-Sparco
    (4)
    $3.16 each
    104
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  • 1" Union Sweat Mixing Valve, 70&#176;F-180&#176;F<br>(Heating Only) Product Image
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    1" Union Sweat Mixing Valve, 70°F-180°F (Heating Only) AM102R-US-1 1" Union Sweat Mixing Valve, 70°F-180°F (Heating Only)
    SKU: AM102R-US-1
    Brand: Honeywell-Sparco
    (20)
    $99.95 each
    222
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  • 3/4" Sweat MIXCAL 3-way Mixing Valve w/ Temp. Gauge & Check Product Image
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    3/4" Sweat MIXCAL 3-way Mixing Valve w/ Temp. Gauge & Check 521519AC 3/4" Sweat MIXCAL 3-way Mixing Valve w/ Temp. Gauge & Check
    SKU: 521519AC
    Brand: Caleffi
    (4)
    $122.99 each
    128
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  • DirectConnect Water Heater Kit w/ 3/4'' Mixing Valve, 8'' SS Corrugated Hose Connector (Lead Free) Product Image
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    DirectConnect Water Heater Kit w/ 3/4'' Mixing Valve, 8'' SS Corrugated Hose Connector (Lead Free) AMX300TLF DirectConnect Water Heater Kit w/ 3/4'' Mixing Valve, 8'' SS Corrugated Hose Connector (Lead Free)
    SKU: AMX300TLF
    Brand: Honeywell-Sparco
    (18)
    $144.95 each
    70
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  • 1/2" LF70A Lead Free Sweat Tempering Valve (120° -160°) Product Image
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    1/2" LF70A Lead Free Sweat Tempering Valve (120° -160°) 0559129 1/2" LF70A Lead Free Sweat Tempering Valve (120° -160°)
    SKU: 0559129
    Brand: Watts
    (8)
    $77.99 each
    56
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  • 1" Sweat Union 5004 Heating Only Mixing Valve w/ Gauge Product Image
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    1" Sweat Union 5004 Heating Only Mixing Valve w/ Gauge 5004-HX-C3-G 1" Sweat Union 5004 Heating Only Mixing Valve w/ Gauge
    SKU: 5004-HX-C3-G
    Brand: Taco
    (6)
    $123.99 each
    81
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  • Tank Booster Pro w/ Braided Hose & Temperature Gauge Product Image
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    Tank Booster Pro w/ Braided Hose & Temperature Gauge 24644 Tank Booster Pro w/ Braided Hose & Temperature Gauge
    SKU: 24644
    Brand: Cash-Acme
    (9)
    $99.95 each
    58
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  • Set of 3 Gaskets for Taco 5000 Mixing Valves Product Image
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    Set of 3 Gaskets for Taco 5000 Mixing Valves 5002-002RP Set of 3 Gaskets for Taco 5000 Mixing Valves
    SKU: 5002-002RP
    Brand: Taco
    (6)
    $7.29 each
      Box Up & Save 4%  
    $83.88 box of 12
    $6.99 each
    36
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    36 Thu, Oct 29
    66 Mon, Nov 2 – Tue, Nov 3
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  • 3/4" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free) Product Image
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    3/4" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free) PFMV075 3/4" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free)
    SKU: PFMV075
    Brand: Bluefin
    $65.99 each
    111
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  • 1/2" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free) Product Image
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    1/2" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free) PFMV050 1/2" Union Push-Fit Mixing Valve, 80 to 120F (Lead Free)
    SKU: PFMV050
    Brand: Bluefin
    $59.99 each
    115
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  • 3/4" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free) Product Image
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    3/4" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free) PXMV075 3/4" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free)
    SKU: PXMV075
    Brand: Bluefin
    $59.99 each
    78
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  • 1/2" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free) Product Image
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    1/2" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free) PXMV050 1/2" Union PEX Crimp Mixing Valve, 80 to 120F (Lead Free)
    SKU: PXMV050
    Brand: Bluefin
    $53.99 each
    80
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  • 1/2" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F) Product Image
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    1/2" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F) AM100-USTG-1LF 1/2" Lead Free Union Sweat Mixing Valve w/ Temp Gauge (70-145F)
    SKU: AM100-USTG-1LF
    Brand: Honeywell-Sparco
    (33)
    $112.95 each
    51
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FAQs, Manuals & Videos

Resources

Articles

  • Mixing valves mix cold and hot water to a desired temperature for a large variety of radiant heating and domestic water applications. They ensure constant, safe water temperature at faucet and fixture outlets to prevent scalding and thermal shock. They provide a steady mixing temperature within 85-150F degrees. Mixing valves are commonly referred to as thermostatic valves, diverting valves, tempering valves, or anti-scald valves.

    How does a mixing valve work?
    A thermostat in the mixing chamber of a mixing valve senses the outlet temperature. The thermostat automatically positions a seat assembly which controls the flow of hot and cold water supplied to the mixing chamber. If the mixed outlet temperature increases, the thermostat will expand and open the cold water inlet wider. This allows more cold water to enter the valve. However, if the mixed outlet temperature decreases, the thermostat will contract and open the hot water inlet wider, while simultaneously constricting the cold water inlet. By sensing the outlet temperature, the mixing valve will automatically adjust the flow of hot or cold water to maintain the preset temperature of the valve. In the event of a cold or hot water supply failure, the seat assembly moves to an extreme position and shuts off the hot or cold water inlet.

    We offer mixing valves in a wide variety of sizes and connections types manufactured by Taco, Honeywell, Watts, Tekmar, and Holby to suit all of your standard, hydronic or radiant heating systems.

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