Hydronics
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Caleffi Series 521 Mixcal Three Way Mixing Valve Sweat
Caleffi Series 521 Mixcal Three Way Mixing ValveThe thermostatic mixer is used in systems producing domestic hot water or in radiant panel heating systems. Its function is to maintain the temperature of the mixed water supplied to the user constant at the set value when there are variations in the supply conditions of the incoming hot and cold water. The valve has been specifically certified to ASSE 1017.$88.25 -
Caleffi Series NA100 3/4" Sweat Tail Piece for use with 1" Union
Caleffi 3/4" Sweat Tail Piece for use with 1" UnionTail piece. Low lead brass$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 AssemblyPre-adjustable automatic filling valve with backflow preventer. Brass body. Max. inlet pressure: 175 psi. Max. working temperature: 150°F. Setting pressure range: 3—60 psi. Preset outlet pressure: 15 psi.$84.75 -
Caleffi Series Z3 3-Way Diverting Valve with 3/4" Sweat 240 Degrees 20 gpm
Caleffi 3-Way Diverting Valve with 3/4" Sweat 240 Degrees 20 gpmThree-way on/off two position valve. Diverting flow pattern. Brass body. Stainless steel stem. EPDM rubber seals and paddle. Max. working pressure: 300 psi. Max temperature: 240°F. *Agency Approval for low-lead brass body: Lead plumbing law compliance: (0.25 max. weighted average lead content). Lead plumbing law certified by IAPMO R&T.$36.13 -
Caleffi Series 669 Manifold PEX Flow Meters
Caleffi Series 669 Manifold PEX Flow MetersFlow meter for manifolds. Max: temperature: 180°F (669050). Max: temperature: 210°F (NA series). ¾" straight male x ¾" straight female connections$18.37 -
Caleffi Series 5022 High Capacity 1/2" NPT Male Air Vent
Caleffi Series 5022 High Capacity Air VentHigh Capacity automatic air vent. Brass body. Max. working pressure: 150 psi. Max. discharge pressure: 60 psi. Max. working temperature: 250°F.$18.29 -
Caleffi Series 676 Two-way Thermoelectric Zone Valve Including Actuator
Caleffi Series 676 Two-way Thermoelectric Zone ValveZone valves are used to control hot and chilled water in heating and air conditioning systems. Coupled with an electro-thermal control actuator and managed by a room thermostat, they allow automatic on/off control of the hydronic circuit on which they are installed. Their special feature is their compact size and they can therefore be installed almost anywhere including baseboard or directly in fan-coil units.$57.30 -
Caleffi Series 519 Differential Pressure Bypass Valve with 3/4" Male Inlet and 3/4" NPTM Outlet.
Caleffi Differential Pressure Bypass ValveCaleffi Series 519 Differential Pressure Bypass Valve with 3/4" Male Inlet and 3/4" NPTM Outlet.$66.22 -
Flow Check Valve. 3/4" NPTF. Brass Body
Flow Check ValveFlow Check Valve. 3/4" NPTF. Brass Body$17.32 -
Caleffi Series 676 TwisTop Two Way Thermo Electric Zone Valve
Caleffi TwisTop Two Way Thermo Electric Zone ValveTwo-way thermo-electric zone valve. Complete with TwisTop™ (code 656314) actuator. Spring return. Normally closed. Max. body pressure: 150 psi. Max. Temperature: 200°F. Max: Δ P close-off pressure: 20 psi. Power supply: 24 V AC/DC. Initial current draw: 800 mA. Power consumption: 3 W. Rating of micro-switch contacts: 5A (24 V). 31.5" wire lead connection.$68.81