Normally closed pneumatic high vacuum baffle valve

GDQ-J-A series normally closed pneumatic high vacuum flapper valve relies on compressed air as the opening and closing power of the valve plate through the electromagnetic reversing valve. When the power supply or compressed air is lost, the valve with a diameter below DN80 will automatically close by spring force. Valves, the valves above DN100 use the one-way valve to quickly close the original air source pressure of the cylinder through the solenoid valve group to automatically close the valve. So as to achieve the function of quickly cutting off the air flow in the vacuum system. The shaft seal structure of pneumatic high vacuum baffle valve can be divided into GDQ-J-A type rubber seal and GDQ-J-A(b) type bellows seal. GDQ-J type is the angle through type, and GDQ-S type is the three-way type with pre-extraction. The applicable working medium is air and non-corrosive gas.

• Applicable range (Pa) 10⁵ ~1.3×10^-4 (shaft seal material is rubber) 10⁵ ~1.3×10^-6 (shaft seal material is bellows)
• Valve leakage rate (Pa.L/S)≤1.3×10^-5 (shaft seal material is rubber) ≤1.3×10^-7 (shaft seal material is bellows)
• Medium temperature (°C) -25~+80 (the sealing material is NBR) -30~+150 (the sealing material is fluororubber)
• Main parts of the valve are made of stainless steel or carbon steel
• Air source pressure (MPa0.4~0.8
• The installation position DN<300 is arbitrary, DN≥300 is vertical
• 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