DV-2 automatic air drain valve lets out moisture from air tank without the driver having to operate any valves or switches. Has a manual drain control built in to override automatic function. Will not clog from small debris in tanks (bits of rust etc). Compatible with all commercial trucks with air brakes as well as Military trucks with air over hydraulic systems (M35, M54, M813, etc) and M939 w/ air brakes. Drain valve has 3/8 inch ports and a 3/8 to 1/4 inch adapter pre-installed. Side port allows installation on tanks with end drain.
P/N 281923. Can be used in place of 281924 by changing side plug and top pipe adapter positions.