The Barnes & Jones 3/4" NPT air vent is designed for maximum evacuation of steam mains used in single pipe steam systems. The large 5/8" orifice provides 3.6 CFM of airflow at only 3 ozs of pressure. The bronze diaphragm has been tested to 10 million cycles and is repairable with a new disc. Overall height: 4 3/4"
- Unknown Binding
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