Safety valve discharge pipe must be installed. To try to avoid the discharge tube twists and sharp turns to minimize drag. To discharge tube through a safe place, and there is sufficient cross-sectional area of ??the flow valve to ensure the smooth flow of exhaust. For safety valve capable of interacting to produce a chemical reaction, can not share a discharge pipe; when the safety valve is mounted on the corrosive, flammable gas safety valve device A28H, should be protected against corrosion or fire explosion proof measures emissions; when the installation of a safety valve device for toxic media, and the vapor density of the medium is greater than the density of air, from the medium and steam discharged from the safety valve to be introduced into the closed system, and recovering from a closed system into production use. 1. faults and eliminate leaks. A28H with handle safety valve, exceed the allowable level of leakage between the valve seat sealing surface equipment to work under pressure. The reasons are: dirt between the valve and valve seat sealing surface. Can be used to enhance the wrench to open the valve several times A28H safety valve with handle quotes, rushed to the dirt; sealing surface damage. Should be based on the extent of damage, the use of grinding or turning grinding methods to be repaired; stem bending, tilting or lever and fulcrum skewed, so that the valve spool and dislocation. Should be re-fitted or replaced; spring elasticity or loss of elasticity. Should be taken to replace the spring, re-adjust the opening pressure and other measures. Body material: cast iron, steel, stainless steel, forged steel, chrome molybdenum steel, chrome molybdenum vanadium steel. Working pressure 1.6-32MPA (American Standard from 150LB-2500LB, Japanese standard from 10K-64K). Operating temperature -20 ℃ -550 ° C valve diameter from DN15-DN300 connection: flange, silk mouth or welding. Drive: manual, electric, pneumatic, bevel gears, spur gears. Suitable medium: water, oil, gas, steam and so on. Safety valve, A28H with handle safety valve, the valve model Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) in this field ball devoted boundless enthusiasm and passion, Everbright valve has been customer-centric, the idea of ??creating value for customers, quality and service to win the market, and sincerely hope to work with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Manager Ma.