Unique Dome Valve

When handling abrasive materials, the expandable pressure seal embedded in the dome valve seat ensures the working pressure difference before and after the valve. The elastic expandable seal can be sunken into the material particles, avoiding the sliding of the material particles due to the pressure difference and the wear of the valve seat and seal ring.
Dome Valve; Rated to run 1,000,000 times before needing to be repaired, greatly reducing maintenance costs and equipment downtime losses. Pneumatic conveying systems all use dome valves to ensure the reliability and efficiency of system operation.

Design Features

Abrasive Materials
Slurry, bulk powder, particles, lumps or dust filled with gas will wear the seal ring, resulting in ineffective sealing. The expandable seal ring provides continuous wear compensation for this.
Pressure Difference

The pressure difference will accelerate the wear of traditional hard seal valves, and the expandable seal ring provides continuous wear compensation for this.

High temperature resistance

Thermal expansion will hinder the continuous operation of the dome valve; the expandable seal can provide wear compensation in the temperature range of 0℃ to 200℃; the specially constructed dome valve can work above this temperature range. Close and seal

The displacement of the rotating dome valve core in the valve body allows the dense material column to rotate, so the dome valve completely filled with material can pass through the packed material to close and seal.

Wide application

Traditional hard-sealed valves cannot operate stably in application environments with any of the above harsh conditions, but dome valves can. Dome valves have been successfully used in more than 10,000 projects in a wide range of industries.
Reliability
The dome valve is designed to be rugged and can do the work that other valves cannot. In standard applications, it only needs to be inspected once every 1 million operations.

Structural features

Dome valve is a new type of quick-closing valve. It adopts the international gas-sealed structure. There is no contact between the valve core and the inflatable sealing ring when the valve is opened and closed. The sealing ring is made of specially formulated rubber and can be widely used for sealing powdered materials. It is a key component in pneumatic conveying systems and is widely used in power, metallurgy, chemical industry, food, pharmaceuticals and other fields. The valve core has no contact with the sealing ring when it moves, has low running resistance and long service life;

Dome valve cores are made of different materials according to different use occasions, and different hardening treatment methods are applied to the surface. The smooth and hard surface of the valve core can ensure good close contact with the rubber sealing ring to ensure reliable sealing. The rubber sealing ring is made of special rubber, which has the characteristics of high temperature resistance, corrosion resistance, wear resistance, aging resistance, etc., and has a long service life. When the valve is opened, the material port is fully circulated without obstruction. The valve is suitable for materials such as gas, liquid, semi-fluid and solid powder. The pneumatic actuator adopts a fully enclosed drive of a linear cylinder or a fan-shaped cylinder, with a large output torque and reliable performance, which can meet the requirements of working under harsh working conditions.

1. Application and Features

The dome valve is a new type of ash removal valve with a cast iron shell structure. It is equipped with a rotatable cast iron dome with two stainless steel shafts inside. An inflatable dome seal is installed in the valve swivel. There is no contact between the dome and the inflatable seal when the valve is working. The seal is made of specially formulated rubber. It is a key component in the pneumatic conveying system.

There is no contact with the seal when the valve top moves, with low running resistance and long service life;

The inflatable seal has good sealing performance;

The pneumatic actuator adopts a fully enclosed rotary push rod straight cylinder drive, rotary output, reliable performance, large output torque, and can meet the requirements of working under harsh working conditions.

The seal is made of special materials with a wide temperature resistance range;

The crankshaft design allows full cross-section flow when the valve is opened and protects the dome sealing surface.