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 gauge stainless steel chamber right, the main channel A unloading. Once the two main conduits pressure reaches the set value, the piston spring force to overcome the left chamber pressure gauge price movement to the left and push the limit switch gauges, the contacts 1 and 2 closed precision pressure gauges, pressure switches are suitable for double nominal pressure 40MPa centralized lubrication system, the control valve or monitor lubrication system, the use of pressure pipes to issue two telecommunications No. stainless steel pressure gauge, Youbisheng electromechanical, Baoying gauges from Changzhou gifted Li Li Electrical and Mechanical Limited. Changzhou Li gifted Litas Electrical Co., Ltd. (www.abc.com) is Changzhou, Jiangsu, indicator leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Li gifted Litas electromechanical leadership with the staff warmly welcome all inquiries negotiations, founded gifted Litas electromechanical a better future.