Hydronics
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Caleffi Series 6561 Thermoelectric Actuator 24V Includes 36" Leads & Built-in End Switch
Caleffi Series 6561 Thermoelectric Actuator 24V Includes 36" Leads & Built-in End SwitchThermo-electic actuator for use with 663 and 668S1 series distribution manifolds. Power supply: 24 V AC/DC. Initial current draw: 800 mA. Power consumption: 3 W. Rating of micro-switch contacts: 5A (24V). 31.5" wire lead connection.$46.28 -
Caleffi Z-One Quick Order Valve and Actuator Sets
Caleffi Z-One Quick Order Valve and ActuatorZ-one valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic heating and air conditioning systems. The motorized two position, on/off/, spring return A1 series actuator has an end mounted push button for quick installation to valve body. The actuator is equipped with or without auxiliary switch and configured Normally closed or Normally Opened with wire or terminal connections. The zero leakage high temperature zone valve body Z2 series is 2-way straight through and the valve body Z3 series is 3-way diverting. The Z1 series actuator is easily attached by a push button lock and without tools. The high temperature and high close-off performance characteristics of these zone valves, combined with the compact size, makes them suitable to fit inside baseboard or directly in fan coil units.$74.18 -
Caleffi Series 519 Differential Pressure Bypass Valve with 1" NPT Female Inlet and 1" Sweat Outlet.
Caleffi Differential Pressure Bypass ValveCaleffi Series 519 Differential Pressure Bypass Valve with 1" NPT Female Inlet and 1" Sweat Outlet.$97.88 -
Caleffi 548 Series Hydro Separator
Hydro Separator available in 1"-2" NPT & Sweat Unions. MAX operating pressure: 150 psi. Temperature range with insulation: 32-210 F without insulation: 32-250 F. Medium: Water & Non-Hazardous Glycol solution. MAX percentage glycol: 50%.Series 548 Hydro Separator. This device consists of several different functional components, each meet specific requirements, typical of the circuits used in heating and air-conditioning systems. • Hydronic separator: To keep connected hydronic circuits totally independent from each other • Dirt remover: To permit the separation and collection of any impurities present in the circuits. Provided with a valved connection with discharge piping. • Automatic air vent valve: For automatic venting of any air contained in the circuits. Provided with a valved connection for maintenance purposes. The hydronic separator should be sized according to the maximum flow rate value at the inlet. The selected design value must be the greatest between the primary circuit and the secondary circuit. When a single system contains a primary production circuit, with its own pump, and a secondary user circuit, with one or more distribution pumps, operating conditions may arise in the system whereby the pumps interact, creating abnormal variations in circuit flow rates and pressures. The hydronic separator creates a zone with a low pressure loss, which enables the primary and secondary circuits connected to it to be hydraulically independent of each other; the flow in one circuit does not create a flow in the other if the pressure loss in the common section is negligible. In this case, the flow rate in the respective circuits depends exclusively on the flow rate characteristics of the pumps, preventing reciprocal influence caused by connection in series. Therefore, using a device with these characteristics means that the flow in the secondary circuit only circulates when the relevant pump is on, permitting the system to meet the specific load requirements at that time. When the secondary pump is off, there is no circulation in the secondary circuit; the whole flow rate produced by the primary pump is by-passed through the separator. With the hydronic separator, it is thus possible to have a primary production circuit with a constant flow rate and a secondary distribution circuit with a variable flow rate; these operating conditions are typical of modern heating and cooling systems.$393.41 -
Caleffi Series 694 Temperature Pocket Well for 1", 1 1/4" and 1 1/2" Hydro Separator
Caleffi Temperature Pocket Well.Temperature pocket well for 1", 1¼" and 1½" Hydro Separator. 1 ¾" pocket length.$9.21 -
Caleffi Series 573 Backflow Preventers 1/2" Sweat Inlet/Outlet
Caleffi Series 573 Backflow Preventers 1/2" Sweat 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 Z2 Z-One Valve Body, 2 Way 1" Sweat 7.5 Cv, 20 psi
Caleffi Z-One Valve Body, 2 Way 1" 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$46.66 -
Caleffi Series 682 PEX-AL-PEX Fittings ASTM F1281 Standard
Caleffi Series 682 PEX-AL-PEX Fittings682 series fi ttings are compatible with any ASTM F1281 multilayer PEX-AL-PEX pipe. Max. working pressure: 150 psi. Working temperature for ASTM F1281 PEX-AL-PEX piping: -41—167°F with tubing rated 200°F.$5.04 -
Caleffi Series 5027 Automatic Air Vent NPTM With Check Valve
Caleffi Series 5027 Automatic Air VentAutomatic air vent with service check valve. Brass body. Max. working pressure: 150 psi. Max. discharge pressure: 90 psi. Max. working temperature: 240°F.$9.39 -
Caleffi Series 676 Two way Zone Valve Body only 3/4" Sweat
Caleffi Series 676 Two way Zone Valve Body only 3/4" SweatTwo-way zone valve body. For fi eld installation of thermo-electric actuators 656114, 656314 or 656414. Brass body and trim. Max. body pressure: 150 psi. Max. temperature: 200°F.$30.68