Safety valve on the pressure regulator whether classification, can be divided into fixed and adjustable safety valve and adjustable valve 1. Fixed non-adjustable pressure relief valve factory set, can not change the safety valve actuation Commonly used in central air conditioning boiler boiler, solar energy systems. 2. Adjustable safety valve off pressure may vary with the different needs of users in a certain range can be arbitrarily set, commonly used in the case of system protection pressure often need to change, but the price is generally higher. Discharge valve according to the different media the way, the valve can be divided into fully enclosed, semi-enclosed and open, three. 1. closed fully enclosed valve exhaust valve, the gas all through the tailpipe emissions wholesale high temperature and pressure valves, medium can not leak between the outside, mainly for medium toxic. Container of flammable gas. 2. The semi-enclosed portion of the gas valve semi-closed valve discharged through the exhaust pipe, but also part of leakage from a gap between the bonnet and the valve stem, the multi-media to not pollute the environment for container gas. 3. Open valve open valve bonnet is open, the spring chamber and the atmosphere Weifang temperature and pressure valves, this will help reduce the temperature of the spring, mainly for the medium to high temperature and pressure steam valve types, as well as the container does not produce air pollution hot gas. Opening pressure adjustment: in the nameplate range spring working pressure level, by turning the adjustment screw to change the amount of compression spring can be adjusted to opening pressure. Before the rotation adjustment screw, the valve inlet pressure should be reduced to 90% of the opening pressure of the following, in order to prevent the valve is rotated when the rotation adjustment screw, which damage the sealing surface. Shandong Everbright valves, high temperature and high pressure valves brand, temperature and pressure valves, Ltd. by Shandong Everbright valve. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) is a professional "valve" of the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Everbright" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the valve Everbright won the trust of all the customers in the ball valve, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!