Caleffi 502710A Automatic Air Vent with Service Check is an air vent with made of brass accompanied with a check valve for easy replacement of the air vent without purging the system. 1/8 inch NPT male connection. This Caleffi 502710A Auto Vent is a very nice quality air vent even for the most discriminating heating professional. Maximum working pressure: 150 psi
Maximum discharge pressure: 90 psi
Maximum working temperature: 240¢ªF
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