Due to the performance and reliability of the safety valve is directly related to the security and stability of the device running Shandong valves must strictly implement the relevant standards such as API, ASME standards in terms of design, material selection, manufacturing, testing, etc., and the whole process of strict quality management. In order to meet the domestic industry and foreign standards for safety valves have advanced level of requirements, from the beginning of eight years, after the successful development of the common safety valve, but also developed a pilot valve and switch safety valve. For having upper and lower adjustment ring (on the guide sleeve and have a seat adjustment ring) structure, the adjustment to be complicated. Seat adjustment ring is used to change the size of the ring between the valve and adjust the channel, thereby changing the initial valve opening pressure between the valve and the extent of the adjustment ring accumulation chamber size. When elevated seat adjustment ring, the degree of pressure build-up increases, so that the valve opening ratio stage decreases rapidly to a sudden sharp turn. Therefore, increased discharge pressure valve seat adjustment ring can be reduced. It should be noted that the seat adjustment ring should not rise too close to the valve. Above, the leak at the sealing surface could cause the valve to open suddenly and prematurely, but because this time the media pressure is not enough to keep the valve flap in the open position Weifang valve, the valve was then closed, then valve occurrence frequency hopping. Seat adjustment: "Circle is mainly used to reduce the proportion valve safety valve, open stage and discharge pressure regulating valve A38Y16C price, but also have an impact on the pressure back seat. Equipment and pipeline A38Y-16C Double spring safety valve for ≤350 ℃ operating temperature of steam, water and other media. As overpressure protection device. Flange standard by JB / T ...... 94 series 1A38Y, A43H, A37H double safety valve is installed or two of the same specifications A48Y A47H safety valve on the Y-connector and composition, its nominal Path series refers to Y-connector inlet diameter, and its combinations in the following table: A38Y16C spring-loaded safety valves, safety valves, valve type Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!