Hydronics
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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 -
Caleffi Series 573 Backflow Preventer 1/2" NPT Female Inlet/Outlet
Caleffi Series 573 Backflow Preventer 1/2" NPT Female Inlet/OutletDual check continuous pressure backflow preventer with atmospheric vent. Brass body. Max. working pressure: 175 psi. Working temperature range: 32—210°F. ASSE 1012 listed and CSA B64.3 certified.$39.29 -
Caleffi Series Z3 Z-One Valve Body, 2-Way 3/4" Sweat 7.5 Cv, 20 psi
Caleffi Z-One Valve Body, 2-Way 3/4" Sweat 7.5 Cv, 20 psiTwo-way on/off two position valve. Straight through 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$27.58 -
Caleffi Series 386 Manifold Plug
Caleffi Series 386 Manifold PlugCap to plug unused manifold outlets on 592, 663 and 668S1 series.$4.92 -
Caleffi Series 502 Automatic Air Vent 1/8" NPT Male
Caleffi Series 502 Automatic Air VentAutomatic air vent. Brass body. Max. working pressure: 150 psi. Max. discharge pressure: 90 psi. Max. working temperature: 240°F.$6.75