The Caleffi 502243A VALCAL is a high-capacity, float-type automatic air vent with a 1/2" male NPT connection and a hygroscopic safety cap.
It releases air collected at high points of hydronic heating and cooling systems. The hygroscopic cap swells when it absorbs water and seals the vent, helping prevent leaks if the float valve weeps. The brass body is rated for 150 psi working pressure, 60 psi maximum venting pressure, and 250°F.
Before ordering, confirm you need a 1/2" male NPT connection and a straight body pattern. Install the vent upright at a high point of the system.
Specifications
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Brand: Caleffi
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Manufacturer Part #: 502243A
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Series: VALCAL
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Type: Float-Type Automatic Air Vent
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Size: 1/2"
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Connection: Male NPT
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Body Pattern: Straight
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Material: Brass
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Cap: Hygroscopic safety cap
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System Type: Hydronic (water)
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Max Working Pressure: 150 psi
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Max Venting Pressure: 60 psi
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Max Temperature: 250°F
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UPC: 8016615083170
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Category: Air Vents
Documents
See also: air vents, all Caleffi products.