expansion box
3.When the temperature to gas pipelines, temperature packets of material expansion, the pressure rise, inflation pressures are rising corrugated box, corrugated promote the expansion thrust to overcome the spring-loaded pole resistance, the ball-type valve opened for big change; When the gas pipeline to reduce the temperature, temperature of the material swelling up, the pressure lowered inflation corrugated box pressure also reduced, spring-loaded pole compressed corrugated of resistance to thrust, spherical valves open for smaller; This constant push and pull adjustment for the balance, as long as refrigeration cycle continue.
5.Book equipment application in automobile, motorcycle, machinery foundation profession (such as chain, fastener, bearing, box spanner, tool, special different type nut and flange surface nut, sides nut, welding nut, cover type nut , locknut, defence pine nut, pull hat nut, chain Luo pull, expansion gecko, independently axle gear, bicycle different type etc.) etc. various different type , complex is not mark cold squeeze into type, suitable scope extensive.
