Hydraulic solenoid valve threaded cartridge pressure holding valve SV12-2NCSP

Cartridge valve

The working principle and characteristics of cartridge valve
Cartridge valve is a kind of switch valve that uses small flow control oil to control large flow working oil. It is the main control component of the taper valve inserted in the oil block, so the name cartridge valve.

Cartridge valves are now mainly divided into two categories: the first type is the traditional cap plate cartridge valve, which appeared in the 1970s and is mainly used for high pressure and large flow occasions. Not suitable for small flow under 16 paths. Cartridge valve can not only realize various functions of ordinary hydraulic valve, but also has the advantages of small flow resistance, large flow capacity, fast operation speed, good sealing, simple manufacture, reliable operation and so on. The second type is the rapidly developed threaded cartridge valve on the basis of the safety valve in the multi-way valve of construction machinery, which just makes up for the lack of the cap plate cartridge valve that is not suitable for small flow, mainly for small flow occasions. The screw cartridge valve has various control functions, and the single component is inserted into the control block with the screw thread type, and the structure is very small and compact. In addition to the difference in the flow range, it has almost all the advantages of the cap plate cartridge valve, and can be widely used in various fields requiring hydraulic control of small flow.

The application in hydraulic pump

The earliest threaded cartridge valves were used in hydraulic pumps. Because the hydraulic pump needs to integrate the hydraulic valve, it requires the hydraulic valve to be small and developed a threaded cartridge relief valve. It should be said that the threaded cartridge relief valve is the earliest development and application of the earliest threaded cartridge valve, and then the threaded cartridge check valve and the threaded cartridge throttle valve are used in hydraulic pumps. Modern hydraulic pumps have many threaded cartridge valve integrations
It is also often used in hydraulic motors, especially closed motors

Threaded cartridge valve. The structure and principle of a closed variable motor are integrated with a threaded cartridge valve. Threaded cartridge relief valve used to adjust the oil change pressure of the system threaded cartridge shuttle valve used to introduce the pressure oil from the high pressure side into the electromagnetic direction control valve Threaded cartridge solenoid direction control valve used to control the motor displacement threaded cartridge three-way shuttle valve also called threaded cartridge hot oil shuttle valve is connected to both ends of the closed circuit motor. The positive and negative transfer of the system ensures that the high pressure side has a certain amount of oil back to the tank to achieve closed loop cooling.