Spring safety valve, safety valve, Everbright valve (View) provided by Valve Co., Ltd. Shandong China Everbright. 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. Safety valve and the boiler drum, between the tanks - like shutoff valve shall be installed, or access to steam out pipe. Between the valve and the pressure vessel - like closing the valve should be installed or other out pipe; for costumes for the high degree of toxicity, high, moderate harm valve manufacturer, flammable, corrosive, viscous media or media pressure vessel precious spring safety valve, pressure vessel by the use of the unit in charge of technical director approval, and to develop reliable preventive measures before between the valve and the pressure vessel fitted with a shutoff valve. During normal operation of the pressure vessel and shut-off valve must be kept fully open valve, plus seals or locks. Structure and path cutoff valves, safety relief valve should not interfere in. Spring safety valve opening, closing operation is medium pressure change and the spring preload to its inlet end of the spool to automatically open and close. When the medium pressure (internal pressure) rises to the lifting force is larger than the spring preload, the spool against the spring preload automatically open, bleed excess media, the internal pressure drop A28H spring safety valve, and because force of the spring, when the internal pressure dropped to a safe value, the valve body closes automatically bleed stops.