Weifang valve _ Everbright valve (certified) _ safety valve provided by Shandong China Everbright Limited valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) is specialized in the "valve" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Ma. Given the need for pressure relief devices, safety plays a crucial role in the protection device process. As of 2013 all types of valve manufacturers and traders have more than more than 700 valve Weifang, daily trading Inquiry reached more than 200, the valve supply and demand in the market was heating up. Preliminary analysis of the data through the first quarter A21H-C type safety valve, safety valve twenty percentage points higher demand. Valve Co., Ltd. specializes in producing Shandong Everbright safety valve safety valve manufacturer, welcome new and old customers to order our products! Nominal pressure: that the safety valve at the highest allowable under normal temperature with pressure, high-temperature equipment used in high temperature material safety valve should not be considered to reduce the allowable stresses. Safety valve is based on the nominal standard design and manufacture. Opening pressure: Also called the rated pressure or tuning the pressure relief valve inlet pressure refers to the valve under operating conditions began to rise when, under the pressure A21F threaded valve spring Weiqi, began to have a measurable opening height medium was visual or auditory perception by continuous emission state. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products!