Fire classification and application plug cock valve spool is a conical hole plug, valve plug in a tapered fit tapered plug valve chamber, the valve handle is rotated with the spool hole import and export valve is turned on or off, to achieve open and close. Fire Plug Valves simple price structure, flow resistance is small, open and close rapidly, does not require the installation of directional. Plug only be used infrequently open and close applications. Due to repeated opening and closing the valve plug valves wholesale wear firefighting, fire protection valve grinding hard sell, but also due to the large friction surface of the spool, opening and closing force is larger. Fire classification and application of the safety valve safety valve valve used to prevent water pipe network or a closed high pressure equipment. Safety valve can automatically open in constant pressure, discharge pressure, and can automatically shut down at constant pressure to maintain protective equipment and pipe network pressure does not exceed the allowable value. Press the action, the safety valve is divided into spring, lever type, pilot three on fire water pipeline is the most widely spring. By Fire disc valve opening height, can be divided into full-Kai and Weiqi, both in the gas pipeline with the entire Kai, and in the liquid line multi Weiqi. Because the liquid can not easily be compressed, bleed a small amount of liquid, the pressure to drop. Fire Valve Factory | PENGDA Fire (certified) | Fire Valve Co. density provided by Shandong PENGDA Fire valve. Valve Co., Ltd. Shandong Peng-Fire (www.pengda119.com) (http://www.pengda119.com) is an industry leader in Shandong Weifang, firefighting equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , and satisfy customer needs. Fire in PENGDA leadership with the staff warmly welcome all inquiries negotiations to create a better future for the fire penta. You can also access (www.pengda119.com/supply_details_41931805.html), for more information about the company.