Safety valve should note the following: (1) there is gas inside the container when liquid two-phase material safety valve should be installed in the gas phase portion. (2) safety valve for venting flammable liquid outlet valve of the tank should be connected to the accident. When the relief material is combustible at high temperature cast steel valves, which receives the container should have the appropriate protective equipment. (3) general safety valve may be emptying valve, vent should be one meter higher than the operator (m) or more and not toward the fire place 15 meters (m) or less, emitting sparks and high temperature equipment location. Indoor equipment, safety containers should lead roof vent and the roof above two meters (m) or more. (4) When the safety valve inlet valve models have cut off valve, cut off valve should be in a normally open state, and to be seals, to avoid mistakes. 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. Faults and eliminate (1) does not return after the discharge valve seat. This is mainly a spring bent stem, valve installation caused by malposition or stuck. It should be re-assembled. (2) less than the required pressure is on. The main constant pressure allowed; spring stretch down the aging. It should be properly tightened adjustment screw or replace the spring. (3) valve frequency hopping or vibration. Mainly due to the stiffness of the spring is too large. You should use the appropriate spring stiffness; adjustment ring to adjust properly, so that the back seat pressure is too high. Should readjust the position of the adjustment ring; discharge piping resistance is too large, resulting in excessive emissions of back pressure. Discharge pipe resistance should be reduced. Shandong valves | Everbright Valve Type (certified) | valve provided by Valve Co., Ltd. Shandong China Everbright. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.