(1) the removal of oil return single valve: there is a joint in the valve body, unscrew from the joint, remove the spring, steel ball, steel ball seat.
(2) cleaning oil return check valve: use cleaning agent to clean the valve body, spring, steel ball, steel ball seat, part of the check valve internal and filter, if there is a clean together.
(3) assembly of the oil return check valve: install the check valve according to the reverse steps of disassembly.
(4) The one-way valve is put aside to be loaded into the air compressor after the whole cleaning process is completed.
