The characteristics of pneumatic three-way valve applies to what conditions

Due to the pneumatic three-way valve is typically used rubber, nylon, and ptfe as pneumatic seat sealing material, therefore its use temperature is limited by a pneumatic seat sealing material. As function of pneumatic valve is on the metal body under the action of medium, for plastic pneumatic pressure to complete each other between the seat ( Float pneumatic valve) 。 Pneumatic seat sealing in the appropriate contact pressure, elastic-plastic deformation of local region. The deformation can be made of the manufacturing precision and surface roughness of body, to keep the pneumatic valve sealing performance.

and as a result of the pneumatic three-way valve pneumatic seat sealing used plastic, so in the choice on the structure and performance of the pneumatic valve, want to consider the refractory of pneumatic valve and fire prevention, such as petroleum, chemical industry, metallurgy and other departments, the equipment and piping system of inflammable, explosive medium used in pneumatic valve, more should pay attention to fire and fire prevention.

, usually in two position adjustment, sealed performance is strict, mud, wear, reducing channel, opening and closing fast ( 1/4 turn to open/close) , high pressure cut-off ( Differential pressure) , low noise, have spirit cave and gasification phenomenon, into the atmosphere of a small amount of leakage, small operation torque, small fluid resistance of the pipeline system, recommend the use of pneumatic valve.

(product 1) Fluid resistance is small, its resistance coefficient with section of equal length.
( 2) Simple structure, small volume, light weight.
( 3) Good sealing, the majority of pneumatic valve sealing surface of materials using the plastic, sealing good, also is the commonly used in the vacuum system.
( 4) Convenient operation, opening and closing fast, from open to close only rotate 90 °, is advantageous for the remote control.
( 5) The pneumatic valve has simple structure, convenient maintenance, sealing ring, which generally remove replacement is more convenient.
( 6) In full open or full close, the body and the pneumatic valve seat sealing surface and the dielectric isolation, medium through, does not cause pneumatic three-way valve sealing surface erosion
( 7) Has a wide applicable scope, size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied.
pneumatic three-way valve applicable occasion:
pneumatic three-way valve can also be applied to light structure, low pressure cut-off ( Small pressure difference) , corrosive medium in the pipeline system. In the low temperature ( Cryogenic) And also can choose pneumatic valve in the pipeline system. Oxygen piping system in metallurgical industry,
in pneumatic valve need to use strict degreasing process. Mains in the pipeline and gas transmission pipeline should be buried in the ground, the need to use full size welded pneumatic valve. When in requires regulation performance, need to choose the pneumatic valve with the v-shaped opening structure. In petroleum, petrochemical, chemical, electric power, city construction, the working temperature above 200 degrees of the piping system can choose metal to metal seal pneumatic valve, pneumatic three-way valve is mainly used in chemical, petroleum, textile, electricity, food, refrigeration, aviation, aerospace, paper and other industrial fields.