The common faults of the valve outlet pressure is very low, even if the fastening pressure adjusting hand wheel, pressure is up or not

      Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. We can supply a full-range of power transmission products, such as chains, sprockets and plate wheels, pulleys, gearboxes, motors, couplings, gears and racks. Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes. Our products are used in many different industry sector, like in automation engineering, drive engineering, conveyor technology, assembly and handling technology, packaging industries, the beverage, food and medical engineering, pharmaceutical production, and laboratory equipment.

      The import and export of oil the valve: the valve plate for the wrongmounting plate design, the pipe valve is over error. The type J valve of the oil inlet with Y type relief valve of the oil inlet and outlet of the opposite. Users note near the valve oil export hit the mark (Pl, P2, Land other words), or check the hydraulic component catalogue, can not be designed wrong and wrong.

     The oil inlet pressure is too low, the pressure reducing valve orifice,lower pressure output from the oil outlet, you should find out the reason oil inlet pressure low (failures such as overflow valve).

The pressure reducing valve downstream circuit load is too small.Pressure couldn't be built up, this can be considered the throttle valve to solve the string in the valve downstream.

The pilot valve (valve) and the valve seat between the mating surfaces due to dirt retention and bad contact, not close together;or pilot cone valve has serious scratch, seat with larvae L out of round, with a gap, causing the pilot valve core and valve seat holeis not closed.

The overhaul, leakage valve cone or cone valve is not installed onthe valve seat hole. In this regard, assembly check valve orconnection.

Tensioning Roller Sprocket

     The main valve on the long damping hole is blocked by dirt, as shown in Figure 3-21, the oil can not P2 cavity through longdamping hole e flows into the main valve spring chamber, a feedback pressure oil cavity P2 transfer not to pilot cone valve, the pilot valve outlet pressure lost regulating effect on the main valve.Damping holes are blocked, the main valve P. The role of P3 cavitylost oil pressure, the main valve into a spring force is very weak(only the main valve spring balance) of the straight type valve, theoil outlet pressure is very low, the force can overcome the balance spring and the valve orifice closed Ymin, so that the oil inletpressure P1 the Ymin throttle greatly reducing the pressure to P2,resorted to the oil outlet pressure not to. Should make long damping hole.

     The pilot valve spring (the pressure adjusting spring) wrong installation into soft spring, or because the spring fatigue causespermanent deformation or fracture, resulting in P2 pressure is not high, only to set the value of a low, this value is much lower than themaximum pressure regulating valve.

The regulating handle by screw thread pull or effective depth is not enough, not the twist in the end the pressure can not be transferred to the maximum.

     The poor sealing between the valve cover and the valve body,serious oil spill. The reason might be the O ring leakage ordamage, a pressing screw fastening and valve cover processingoccurs when the flatness error, usually around the center of the concave convex.

     The main spool due to dirt, burrs stuck in the small openingposition, the outlet pressure is low. Can be cleaned and deburring.