Solar Thermal
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Caleffi Series 250 Solar Automatic Air Vent
Caleffi Series 250 Solar Automatic Air VentAutomatic air vents are used in the closed circuits of solar heating systems. They allow air contained in the fluid to be released automatically during the filling process, through a valve operated by a float in contact with fluid in the system. The shut-off valves are used in combination with the automatic air vents to isolate them after filling the circuit of solar heating systems. .These series of products have been specially made to work at high temperatures with a glycol medium.$27.16 -
Caleffi Series 251 Discal High Capacity Auto Air Vent 1/2" NPT Female
Caleffi Series 251 Discal High Capacity Auto Air Vent 1/2" NPT FemaleHigh-performance automatic air vent for solar heating systems. Working temperature range: -20—320ºF. Max. working pressure: 150 psi. Max. discharge pressure: 150 psi$55.10 -
Caleffi Series 2521 Adjustable Thermostatic Three Way Mixing Valve
Caleffi Series 2521 Adjustable Thermostatic Three Way Mixing ValveAdjustable thermostatic three-way mixing valve for solar systems with built-in inlet check valves. Setting range: 80—150ºF. Max. working pressure (static) 150 psi. Max. working pressure (dynamic) 75 psi. Min. working pressure (dynamic) 30 psi. Max. inlet temperature: 210ºF. Connection: ½", ¾", 1" sweat. ASSE 1017 Listed. Lead Plumbing Law Compliance: (0.25% Max. weighted average lead content). Lead Plumbing Law Certifi ed by IAPMO R&T.$99.89 -
Caleffi Series 253 Saftey Solar Release Valve
Caleffi Series 253 Saftey Solar Release ValveSafety relief valves for solar systems. Working temperature range: -20—360ºF. Normal pressure: 150 psi. Opening over pressure: 10%. Closing differential: 20%. Discharge capacity: 171,000 BTU. Connections: Inlet, ½" female. Discharge, ¾" female.$29.41 -
Caleffi Series NA292 Shut Off Air Vent Valve 1/2" NPT Female to 1/2" Male
Caleffi Series NA292 Shut Off Air Vent Valve 1/2" NPT Female to 1/2" MaleShut-off for automatic air vent. Working temperature range: -20—360ºF. Max. working pressure: 150 psi.$24.01
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