Safety valve is a valve in a branch of the family is special, because it's particularity is different from the other valves valve only acts as a switch A21H threaded valve spring Weiqi, more importantly protect the safety equipment . With the rapid development of China's economic construction, the project works with a pressure control device is increasing. Valve Co., Ltd. specializes in producing Shandong Everbright safety valve safety valve manufacturer, welcome new and old customers to order our products! The main valve is widely used in: steam boilers, liquefied petroleum and gas safety valve seal all copper LPG tank car or rail tankers, production wells, high pressure bypass steam generating equipment, pressure piping, pressure vessels. Valve Co., Ltd. Shandong Everbright A21F manufacturer specializing in the production valve spring Weiqi threaded valve, welcome new and old customers to order our products! Discharge pressure: the valve inlet pressure reaches a predetermined height when open. Limit the discharge pressure of the need to obey the requirements of the relevant standards or norms of the country. Over pressure: the pressure difference between the discharge opening pressure, the opening pressure is usually expressed as a percentage. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! A21F threaded valve spring Weiqi | Everbright Valve Model | safety valve provided by Shandong China Everbright Limited valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing 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.