What are the differences between electric valves and pneumatic valves?

Electric gate valve is a kind of linear motion valve, which is matched with Z-type multi-turn actuator, and there are switch type and intelligent type. This valve is simple to operate and is a common opening and closing valve, which uses the up and down work of the gate to switch on and off the fluid medium in the pipeline. Widely used in electric power, metallurgy, petroleum, chemical industry, papermaking, sewage treatment and other departments.

The pneumatic gate valve is a double-layered cylinder with a pneumatic actuator, with a buffer mechanism and a manual and its protection mechanism. Compared with the single-cylinder pneumatic gate valve, the lifting force of the valve is doubled due to the double-layered cylinder structure. This fundamentally solves the problem that some valve bodies of the single-cylinder pneumatic gate valve are wedged and cannot be opened.

The difference between electric valve and pneumatic valve:

1. The force distance of the pneumatic valve is larger than that of the electric valve. The switching speed of the pneumatic valve can be adjusted. Its control system is also more complicated than electric valves. Pneumatic valves are responsive, safe and reliable, and many factories with high control requirements set up compressed air stations for pneumatic instrument control components. The power source of the pneumatic valve actuator is the air source, and the air source comes from the air compressor. The positioner is used to convert the electric control signal into the pneumatic control signal, and the pneumatic actuator is driven to adjust the valve position.

2. The power source of the electric valve actuator is the power supply. If the circuit board or motor fails, sparks are prone to occur. Therefore, it is generally used in places where the environmental requirements are not high and there is no danger. The adjustment performance of the pneumatic actuator and the electric actuator is compared. The pneumatic actuator The response speed is faster and it is more suitable for application in regulating conditions, so the manufacturers of regulating valves also produce pneumatic actuators to match them.

3. The adjustment response speed of the electric actuator is not fast enough, and there are more pneumatic actuators on the regulating valve than electric actuators.

4. The essential difference between electric valves and pneumatic valves lies in the use of different driving devices, that is, actuators, while the regulating valve itself is no different. The main requirements for working with different actuators, such as chemical industry and other explosion-proof occasions, are mostly pneumatic valves, because of high safety requirements and low price, with intelligent positioner, it can be connected to the bus, and the control method is also simple.

Ningbo Baodi Plastic Valve Co., Ltd. is professional China ProductS Manufacturers and ProductS suppliers.Founded in 2006, the enterprise has established ISO9001 quality system to support the quality guideline: supported by Technology, Meticulously Researching, Professionally Manufacturing and Permanently Creating New Records. The first class production equipments and advanced manufacturing skills are introduced at the same time, involving KRAUSS-MAFFEL CPVC pipe production line and Haitian CPVC Plastic Molding Machine of 2800 tons. In order to ensure the quality of wholesale ProductS, the raw materials like CPVC and PVDF are wholly imported from Noveon (USA) and Atofina (France).