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. Breakdown and elimination method (1) does not return after the discharge valve seat. This is mainly a spring bent stem, the valve installation caused by malposition or jammed. Should be re-assembled. (2) less than the required pressure is on. The main constant pressure allowed; elastic spring aging decline. Tighten the screw should be properly adjust or replace the spring. (3) valve frequency hopping or vibration. Mainly due to the spring rate is too large. Should use 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 A28H safety valve, resulting in excessive emissions of backpressure. Discharge piping resistance should be reduced. Safety valves are widely used in various industries of the national economy, as boilers and pressure vessels and piping safety accessories, in accordance with the national "Pressure Vessel Safety Technology Supervision" requirement with handle spring safety valve, "general safety valve should be at least a year check again. " However, the current petrochemical, chemical and other enterprises means more than one year of continuous operation, even two or three years to achieve parity once a year is difficult; some devices are continuous operation, no maintenance period; in addition A28H with handle spring full safety valve, safety valve on the unit is running fails require removal and replacement without stopping the machine is also difficult to achieve. To this end, developed a safety valve fast switching device that can achieve non-stop fast valve replacement purposes. Sellers safety valve with handle spring | safety valve | Valve Model Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) is a specialist in the "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, customers first" principle, so that the valve Everbright won the trust of customers in the congregation ball, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you!