1/2" MNPT VALCAL, High Capacity Air Vent w/ Hygroscopic Safety Cap

Brand: Caleffi
Part#: 502243A
Caleffi VALCAL series high-capacity, float type automatic air vent with hygroscopic cap and 1/2" male NPT connection. Unlike standard air vent caps, hygroscopic safety cap prevents water spills in case the vent malfunctions. This model is also a suitable replacement for Caleffi 548 Hydro series hydraulic separators. Compatible with nearly any hot water heating system (baseboards, radiators, radiant floor heat, fan coils, etc.).
Removes trapped air from hydronic systems, increasing efficiency and reducing corrosion of cast iron elements (boiler heat exchanger, radiators, circulators, etc.).
Field serviceable design allows disassembly and cleaning or basic repairs.
Made in Italy.

Technical Specifications:
  • Connection: 1/2" Male NPT
  • Max Operating Pressure: 150 psi
  • Max Discharge Rate: 2.5 SCFM
  • Max Discharge Pressure: 60 psi
  • Temperature Range: 32 - 250°F
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