2, check whether there is too much oil return pipe bend, kink and obstacles. Swan air compressor. Recommended minimum return pipe inner diameter (12 mm). Oil return line must have been dropped from the engine crankcase. Meanwhile, when the stop position of the piston speed is zero at the side of the first compression piston ring volume than the pressure a lot, its maximum acceleration, swan air compressor |?? Xingchang Pneumatic Machinery | Swan air compressor best By Qingdao Xingchang Pneumatic Machinery Co., Swan air compressor |?? Xingchang Pneumatic Machinery | Swan air compressor is best Qingdao Xingchang Pneumatic Machinery Co., Ltd. (www.xckyj.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Cui Junbo.