D500248 | 1/2" 21-AR Air Vent 92# 3/32" | Armstrong International

**Armstrong International 1/2" 21-AR Air Vent** The Armstrong International 1/2" 21-AR Air Vent (SKU: D500248) effectively removes air from hydronic systems, ensuring efficient operation of pumps and boilers. Constructed from durable materials, this air vent boasts a 92# pressure rating and a 3/32" orifice for optimal airflow management. Its compact design allows for easy installation in tight spaces, while its rugged construction ensures reliable performance in demanding industrial environments. The 1/2" NPT connection provides convenient adaptability to most hydronic systems. Engineers and maintenance professionals trust Armstrong International for quality solutions, and this air vent is no exception. Order your Armstrong International 1/2" 21-AR Air Vent (D500248) today from our HVAC supply store! We offer competitive pricing, fast shipping, and expert support for all your industrial needs.