Special designed drain valves can be installed at any position on the thief barrel. The oil is drained by simply compressing the valve head with the thumb. This eliminates the twisting and turning of the standard petcock. There are two models. The low profile sticks out approximately 9/16 of an inch from the barrel. If installed near the trip rod tube, the tube helps protect it from bumping or catching on the tank. The extended drain model sticks out approximately 13/16 of an inch from the barrel. Both valves come completely assembled. Just drill and secure the valve in place.
