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Quilt Ball valve
Quilt gate
Quilt Butterfly valve
Quilt Shut-off valve
Quilt Electric valve
Quilt Control valve
Quilt The electromagnetic valve
Quilt Shut-off valve
Quilt Safety valve
Quilt Check valve
Quilt Drain valve
Quilt Needle valve
Quilt Balancing valve
Quilt Pressure reducing valve
Quilt Diaphragm valve
Quilt Vent
Quilt Stopcock
Quilt Plunger valve
Quilt Flame arrester
Quilt Breathing valve
Quilt Steam trap
Quilt filter
Quilt Discharge valve
Quilt Drain valve
Quilt Pneumatic valves
Quilt Regulating valve
Quilt Vacuum valve
Quilt Hydraulic valve
Quilt Valve fittings
Quilt Hydraulic control valve
Quilt Self-operated valve
Quilt Electric two-way valve
Quilt Oilfield special valve
Quilt Special valve for liquefied petroleum gas
Quilt Inlet valve

How to choose a vacuum valve

Release time: 2014/11/24

Factors to consider when selecting a vacuum valve


1. There are low vacuum valve, high vacuum valve and ultra high vacuum valve according to the working pressure.


2. According to the structural characteristics, there are baffle valve, flapper valve, butterfly valve, ball valve, diaphragm valve, angle valve, straight valve, three-way valve.


3. According to the transmission principle, there are manual, pneumatic, electric and electromagnetic. Generally pneumatic is the process of electromagnetic pilot and cylinder performing actions, and the process of pilot valve cylinder performing actions can also be controlled by hand. Electricity is used for both hands and electricity, and can be operated manually when power is cut.


4. According to the material, there are stainless steel, carbon steel, aluminum alloy as the main material of the valve.


5. According to the material of the dynamic seal, it can also be divided into metal seal and non-metal seal valve. O-rings for shaft seals have a leak rate of 10-4 Pa.L / S. The vacuum degree is not high during the movement of the shaft. It can be used under low vacuum conditions. Tube sealing, its leakage rate is 10-7Pa.L / S, suitable for use under ultra-high vacuum conditions.

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