Differential pressure switch valve and limit switch assembly on a backplane. Grease under pressure into the pressure from the main channel B switch valve piston chamber significant pressure from the right table, the main channel A unloading. Once the two main conduits pressure reaches the set pressure table wholesale value, the piston against the spring force of the left chamber pressure table pointer moves to the left and push the limit switch pressure table, make contacts 1 and 2 closed, AFS930. 8x series of air pressure switch also called gas pressure switch, which can be used to monitor air or other non-flammable and non-corrosive other overpressure, vacuum and differential pressure table magnehlic, Beijing pressure table, Li gifted Litas established by Changzhou gifted Litas Electrical Co., Ltd. Changzhou Li gifted Litas Electrical Co., Ltd. (www.abc.com) strong, credible, in Changzhou, Jiangsu display instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead stand gifted Litas electromechanical and you hand into the brilliant, for a better future!