Ptfe pneumatic seat of pneumatic valves and introduction

teflon commonly known as 'plastics king', the Chinese brand name 'teflon', 'teflon' 'teflon', 'rich grand' and 'teflon', etc. It is composed of tetrafluoroethylene by polymerization of polymer compounds, it has excellent chemical stability, corrosion resistance, Is one of the best materials for corrosion resistance in the world today, in addition to the molten metal liquid and sodium fluoride, ingeneral, all other chemicals in aqua regia boil also doesn't change, is widely applied in all kinds of need of resistance to acid and alkali and organic solvents, sealing, high lubrication is not sticky, electric insulation and good anti-aging endurance, excellent heat resistance, In + ℃ to - ℃ under the temperature of working for a long time.
ptfe is widely used as pneumatic seat of the material in a variety of needs of acid and alkali resistance, corrosion condition. Ptfe is winding on a rubber ring, fixed on the separate pneumatic groove of the body, after the pneumatic valves open, the back elastic rubber core, make the teflon slowly back to the desired location, so that the next time the closing tightly shut off. This kind of structure can open after sealing pounds per inch ( The differential pressure bar.
rubber o-ring is isolation, the fluid phase and the line contact. Can automatically compensate the wear of sealing and heat changes. A kind of the offset of pneumatic valve plate CAM has lower friction torque and seal.
other structure including ptfe sliding seal '' it is in front of an elastic rubber o-ring. This kind of structure has been successfully operating for pounds per inch ( The bar pressure difference. Clamping in pneumatic valve body between the ring and seat by pipeline flange fixed. With his lips and sealing function and glass fiber filling ptfe pneumatic seat together and allowed to have thousands of bubble tight shut, to use this material for the small pneumatic valves, operation temperature ranges from - ° to ° F, the differential pounds per inch. Special dry lubrication pneumatic metal seat can be manipulated to ° F. Eccentric pneumatic valve plate and the structure of the bias axis pneumatic valve plate in the initial rotation within a few degrees of raise left pneumatic valve seat, this eliminates the unbalanced load, so prolong the life span of the pneumatic valve seat. This form of pneumatic valve diameter range of inches.