1. 3/4" port dust collector control valve 2. World class quality imported diaphragm 3. ADC aluminum alloy Valve body. Dust collector control valveModel Number ... , 50mm, 65mm, 76mm are available)Joint size: (1", 1-1/2", 2", 2-1/2", 2", 2-1/2", 3") Product Information1. Feature: ASCO series, copy ... us for further information about the dust collector control valve. 3/4" port dust collector control valve