Hydronics
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Caleffi Series 553 Automatic Filling Units 1/2"Union NPT Male Inlet with 1/2" NPT Female Outlet
Caleffi Series 553 Automatic Filling Units Learn More$50.39 -
Caleffi Series 521 MixCal 3-Way Thermostatic Mixing Valve with adapter
Caleffi MixCal 3-Way Thermostatic Mixing Valve Learn More$119.71
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Caleffi Series 680 Universal PEX Fittings ASTM F876 Standard
Caleffi Series 680 Universal PEX Fittings Learn More$4.92 -
Caleffi Discal Series 551 Air Separators Brass Sweat
Air separator. Brass body. Glass reinforced nylon internal element. ½" NPT female bottom thread. Max. working pressure: 150 psi. Working temperature range: 32—250°F. Learn More$91.57
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Caleffi Series 6563 Twistop Thermoelectric Actuator 24VAC Manual Twist Open
Twistop Thermoelectric Actuator 24VAC Manual Twist Open w/green open indicator, Includes 36" Leads and Built-in End Switch Learn More$60.02 -
Caleffi Universal Flow Switch
Universal Flow Switch for heating systems. 1" NPTM, Brass body, Suitable for 1" to 8" pipe. UL listed. Learn More$121.97
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Caleffi Pressure/Temperature Gage for Boilers with 3 1/8" Dial size
Caleffi Pressure/Temperature Gage for Boilers with 3 1/8" Dial size Learn More$16.73 -
Caleffi Series 521 Mixcal Three Way Mixing Valve Sweat
Caleffi Series 521 Mixcal Three Way Mixing Valve Learn More$88.25
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Caleffi Series NA100 3/4" Sweat Tail Piece for use with 1" Union
Caleffi 3/4" Sweat Tail Piece for use with 1" Union Learn More$5.85 -
Caleffi 573 Series Backflow Preventer and AutoFill Assembly 1/2" Sweat Union Inlet Dual Check Backflow Preventer plus Automatic Boiler Feed Valve with 1/2" NPT Female Outlet
Caleffi 573 Series Backflow Preventer and AutoFill Assembly Learn More$84.75