Excavator accessories Kobelco SK200-6/200-5/200-3 Travel fast and slow speed solenoid valve G24DA40

      Solenoid valve from the mode of action can be divided into three categories: direct action type, recoil type,

pilot type, and from the valve flap structure and material differences and differences in principle recoil type

can be divided into: diaphragm type recoil solenoid valve, piston type recoil solenoid valve;

      The pilot type can be divided into: pilot type diaphragm solenoid valve, pilot type piston solenoid valve;

      From the seat and sealing material can be divided into: soft seal solenoid valve, steel seal solenoid valve,

semi-steel seal solenoid valve.

      First, the principle of direct acting solenoid valve: When the normally closed direct acting solenoid valve is

energized, the electromagnetic coil produces electromagnetic suction to lift the valve core, so that the closing

magnetic part is open from the far open seat seal pair;

      When the power is off, the electromagnetic force disappears, and the valve is closed by pressing the closing

element on the valve seat with the spring force.(Normally open type is the opposite).

       For example, the direct-acting solenoid valve produced by HERION technology introduced by our company

can be used for 1.33×10-4Mpa vacuum.

       Features: In vacuum, negative pressure, zero pressure difference can work normally, DN50 below can be

arbitrarily installed, but the electromagnetic head two,backflush solenoid valve principle: its principle is a combination

of direct action and pilot, when powered on, the solenoid valve will first open the auxiliary valve, the main valve

lower chamber pressure is greater than the upper chamber pressure and the use of the pressure difference and

the solenoid valve at the same time to open the valve;

       When the power is off, the auxiliary valve uses spring force or medium pressure to push the closing part, and

moves down the valve to close.