Normally closed pneumatic high vacuum flapper valve (with bellows seal)

GDQ-J-A (b) series normally closed pneumatic high vacuum baffle valves are sealed with bellows. The valve is powered by compressed air, changes the direction of the gas path through the electromagnetic reversing valve, pushes the cylinder piston to move up and down, drives the valve stem to move up and down, and makes the valve plate open or close, so as to achieve the purpose of connecting or cutting off the air flow in the vacuum system. The valve has a series of advantages such as stable operation, reliable sealing and long service life, and is one of the preferred valves for automation of vacuum equipment. The applicable medium of the valve is air and non-corrosive gas.

• Applicable range (Pa)10⁵~1.3X10^-6
• Valve leakage rate (Pa.L/S)≤1.3×10^-7
• Applicable temperature (℃) -25~+ 40
• Air source pressure (Mpa) 0.4~0.8
• Flange standard GB4982
• Any installation position
• Power supply voltage standard factory: AC220V/50Hz Special designation: ①AC110V; ②DC24V; ③DC12V, etc.
• Signal feedback standard factory: without feedback signal Special designation: magnetic switch DC/AC5~240V