Armstrong C3510-12 Cast Iron Air Vent

The Armstrong 1AV Series cast iron air vent 1/2″ or 3/4″ NPT has a bottom inlet and a 1/4 NPT top outlet. The 1AV Series is good for air/gas venting up to 300lbs, and uses a positive closing free floating lever to insure leaktight closing. The 1AV Series has a inlet to outlet dimension of 5-1/2″ face to face from bottom to top , a width of 3-3/4″, and a weight of 4lbs.

300Lb Maximum Operating Pressure