Leakage protection, short GFCI pneumatic valve plant, also known as leakage circuit breakers, mainly used in the event of equipment failure and leakage of personal electric shock protection can be fatal, with overload and short circuit protection, it can be used to protect circuits or electric motor overload and short circuit, can start it in normal circumstances as frequency conversion circuit used. Leakage protection can their protection, structural features, installation side leakage protection device type, operating mode, number of poles and lines, motion sensitivity classification, where the main function according to their protection and use classification will be described, and can be divided into the drain protection relays, earth leakage protection and leakage protection switch socket three.江苏兰 valve General equipment - Note Ball repairs have a longer service life and maintenance-free valve plant of heat, will depend on several factors: the normal working conditions, maintain a harmonious temperature / pressure ratio, and reasonable corrosion Data ball valve in the closed state, the internal body fluid under pressure is still there before servicing and relieve line pressure valve in the open position before servicing, disconnect the power source before servicing or gas valve plant, the actuator bracket must first check out the next ball, after the downstream pipeline indeed is dismounted pressure operation must be carried out carefully disassemble and reassemble prevent decomposition damage parts of the sealing surface, especially non-metallic parts, when removing the O-ring on the appropriate use of special tools when mounting flange The bolts must be symmetrical, gradually and evenly tighten the cleaning agent should be compatible with the ball in the rubber parts, plastic parts, metal parts and the working medium (such as gas) are. Working medium for the gas, available gasoline (GB484-89) to clean metal parts. Non-metallic parts with pure water or alcohol to clean the non-metallic parts should be cleaned immediately removed from the cleaning agent, not a long soak after being washed wall needed to be cleaned after volatile cleaning agent (not soaked cleaning agent available silk rub) for assembly check valve plant, but not for a long time on hold, otherwise it will rust, dust contaminated by the new parts in the assembly also need clean assembly should be allowed to have (except for the requirement to use) metal debris, fibers, grease and other dirt impurities and foreign matter contamination, adhere to or remain on the part surface or into the cavity, if a micro-leakage occurred at the packing shall be re-locking stem nut. Check Valve Factory | 江苏兰 valve (certified) | valve plant by 江苏兰 valve General Equipment Co. Jiangsu Lan valve General Equipment Co., Ltd. (www.lanfa.cn) Changzhou, Jiangsu, regulating valves 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 Jiangsu Lan valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for Jiangsu Lan valve.