A21F, A21H-C type spring Weiqi threaded safety valve for air temperature equipment or piping, ammonia, liquefied petroleum gas and other media ...... ≤200 ℃ for. A21W-P, R type spring Weiqi threaded valve for temperature ≤200 ℃ corrosive gas or liquid equipment or pipeline safety valve, as the overpressure protection device. KA21Y type spring Weiqi threaded valve for temperature ≤100 ℃ liquefied petroleum gas. Threaded valve spring Weiqi main parts Materials, Shandong, China Everbright Valve Co., Ltd. is a company with highly innovative international technology company A21H threaded valve spring Weiqi, the group of employees has been committed to providing customers with a full range of industrial valves solve program, specializing in industrial valves production, research and development, sales and service. The company actively introduce learning United States, Japan, Shandong valves, Germany and other advanced countries in the world valves and actuators advanced technology, through absorption and improvement in the domestic and international markets to get the customer's trust and respect. 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 spring Weiqi threaded valve, safety valve, valve manufacturers 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!