C-Q5 electromagnetic high vacuum belt charging valve is connected to the high and low vacuum system, the valve is powered on and the valve is opened, and the charging port is closed at the same time, and the P and A end pipelines are connected; when the power is off, the valve plate is closed, and the P and A ends are cut off. Pipeline to ensure the vacuum of the system, and at the same time open the inflation port, and inflate the A end through the F end. GDC-5 electromagnetic high vacuum flapper valve is connected to the high and low vacuum pipelines to connect or cut off the air flow of the vacuum system. GDC-Q5 and GDC-5 vacuum valves are suitable for clean air and non-corrosive gases.

GYC-JQ series high vacuum electromagnetic differential pressure charging valve is a special valve installed on the mechanical vacuum pump. It is installed at the air inlet of the mechanical vacuum pump and is turned on and off synchronously with the pump. When the pump stops working or the power supply is suddenly interrupted, the valve can rely on the pressure difference between the atmosphere and the vacuum to automatically close the valve plate, close the vacuum system, maintain its vacuum degree, and fill the air into the pump chamber through the orifice of the valve. , to avoid the backflow of pump oil from contaminating the vacuum system. The applicable working medium is air and non-corrosive gas.

DYC-Q series low vacuum electromagnetic differential pressure charging valve is a special vacuum valve installed on the air inlet of mechanical vacuum pump. Its working principle is that the power supply of the mechanical pump and the power supply of the solenoid valve coil are connected to the same power supply. When the mechanical vacuum pump suddenly loses power and stops running due to work needs, the valve uses atmospheric pressure to automatically close the valve core and cut off the channel connected to the vacuum system. At the same time, air is released into the pump to prevent the mechanical pump oil from returning to the vacuum system, which plays a role in protecting the vacuum system and is conducive to the restart of the mechanical pump. The applicable working medium is air and non-corrosive gas.

DYC-JQ series electromagnetic vacuum differential pressure filling valve is a special valve installed on the mechanical vacuum pump. It is installed at the air inlet of the mechanical vacuum pump and is turned on and off synchronously with the pump. When the pump stops working or the power supply is suddenly interrupted, the valve can rely on the pressure difference between the atmosphere and the vacuum to automatically close the valve plate, close the vacuum system, maintain its vacuum degree, and fill the air into the pump chamber through the orifice of the valve. , to avoid the backflow of pump oil from contaminating the vacuum system. The applicable working medium is air and non-corrosive gas.