What is the difference between single (double) acting pneumatic valves
date:2022-07-14 14:03
There is no spring in the double acting cylinder, and there is no air on and off (you can also add air from the air path to turn on and off). The valve position remains unchanged in case of failure. There is a spring in the single acting cylinder. There must be a choice of air on or air off. This is for safety.
In terms of function, both single acting and double acting cylinders can meet the requirements of fault on, fault off, fault protection, etc. The choice of single acting and double acting depends on your site requirements. The single acting actuator is larger and heavier than the double acting actuator, so the required installation space is also larger, but the operation accuracy of the single acting cylinder is higher than that of the double acting cylinder, and the degree of insurance of the fault location is also higher. Single acting cylinders are twice as expensive as double acting cylinders in the market.
Single (double) action pneumatic valve (ball valve) body channel and connecting pipe diameter are equal and form a diameter, and the medium can flow almost without loss. Products are usually used in occasions with strict sealing requirements. In addition to controlling gas, liquid and steam media, they are also suitable for controlling sewage and media containing fibrous impurities. They are widely used in petroleum, chemical industry, metallurgy, light industry, papermaking, power station, refrigeration and other work fields.
