Hydraulic Pipeline The hydraulic control part of operation work 1. Left Control Valve (4 ways) equipment is composed of hydraulic oil tank 2. Right Control Valve (4 ways) (3), oil pump (4), distributing valve (5) and 3. Hydraulic Oil Tank high-pressure pipeline. The control valve, oil 4. Hydraulic Oil Pump cylinder and hydraulic motor are connected 5. Distributing Valve together with high-pressure pipeline. 20-96