A21F, A21H-C type spring inching valve internal thread dimensions and connecting dimensions Valve Co., Ltd. is located in Shandong, China Everbright International Kite WEIFANG, Jinan-Qingdao, Lai Wei-speed, Jinan Railway running through the city, transportation is very convenient. The company specializes in producing valve manufacturer, welcome new and old customers to order our products! When the equipment or pipeline pressure or temperature exceeds the set pressure relief valve spring Weiqi A21F threaded safety valve, pressure relief or cooling automatically open, to ensure that equipment and the pipeline medium pressure (temperature) in the set pressure (temperature) of the Under A21H threaded valve spring Weiqi, protective equipment and piping work, to prevent accidents and reduce losses. Valve Co., Ltd. specializes in producing Shandong Everbright safety valve safety valve manufacturer, 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! A21H inching valve springs, valve model Everbright, 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.