EVP vacuum pump co., ltd. supplies high vacuum butterfly valve, high vacuum butterfly valve is divided into high vacuum electric butterfly valve and high vacuum pneumatic butterfly valve. The following two vacuum butterfly valves are introduced in detail.
The electric high vacuum butterfly valve is suitable for connecting or cutting off the pipeline medium flow in the vacuum system. Electric high vacuum butterfly valve adopts electric and electronic regulating valve driving device, which can realize the control of valve opening, closing or middle position by switching external power supply (manual switch or computer control) or external input signal. The valve plate of the electric high vacuum butterfly valve adopts the clamping structure, which clamps the sealing ring of the valve plate. It can be used not only in the vacuum state, but also in the low pressure state. Electric high vacuum butterfly valve can be installed in any position. Electric high vacuum butterfly valve suitable for the working medium of air and non – corrosive gases.
1. Small opening torque, flexible and convenient, energy saving and energy saving.
2, high pressure resistance, corrosion resistance, wear resistance, long service life.
3, good sealing, can achieve complete sealing. It is also widely used in vacuum systems.
4, easy to operate, open and close quickly, from open to close just rotate 90 °, is advantageous for the remote control.
5, in full open or closed, the ball and seat sealing surface and media isolation, media through, will not cause erosion of the valve sealing surface.
6. Wide application range, from small to a few millimeters in diameter to a few meters, from high vacuum to high pressure can be applied.
7. The ball valve can be used in medium with suspended solid particles due to its wipeability during opening and closing.
GIQ pneumatic vacuum butterfly valve is composed of two parts: pneumatic actuator and vacuum butterfly valve, and the middle part is connected by bracket. The valve plate of the vacuum butterfly valve adopts the clamping structure, which clamps the sealing ring of the valve plate for better sealing effect. Applicable working medium is air and non-corrosive gas.
The pneumatic actuator of the GIQ pneumatic vacuum butterfly valve is powered by compressed air. It changes the direction of the air path through the electromagnetic directional valve and pushes the mechanical movement of the piston rack and gear. The butterfly valve is driven by the output torque of the angular stroke for the movement of opening and closing. In order to achieve the goal of connecting or cutting off the air flow in the vacuum tube, divided into double action and single action (spring return) cylinder. Optional feedback signal device and electrical valve positioner.
1, can be multi-station installation, not affected by the media flow.
2, no connecting rod, bolt, reliable work, long service life.
3. The shaft seals at both ends of the valve are sealed with a pressure of 0.25mpa to ensure no leakage at the shaft seals
4, no connecting rod, bolt, reliable work, long service life. Can be multi – station installation, not affected by the media flow.
5. The structure is in the form of a double valve seat, and the rubber narrowing and pressure water (pressure value 0.25mpa) are combined at the two seats and the shaft end.
6, the new structure is designed and manufactured, compact structure, light weight, easy to install, small flow resistance, large flux, avoid the influence of high temperature expansion, easy to operate.
7, the use of the middle line plate plate and short structure plate welding new structural design and manufacture, compact structure, light weight, easy to install, small flow resistance, large flux, avoid the impact of high temperature expansion, easy to operate.