Inside water distribution pipes full of quasi working condition for starting the system has a closed system pressure gases. Dry and wet systems only control signal similar valve structure and function works differently, between the water distribution network and water supply control signals to set the dry valve to separate them, and in the distribution pipeline network usually filled with pressure gas for system start. In case of fire, gas spray nozzle first, causing the pipe network pressure drop, Tianjin FM Approved fire sprinklers, water pressure in the pipeline to open water valve control signal into the distribution network, FM certified fire sprinklers price, and then ejected from the nozzle fire. However, this system requires several additional set of inflatable equipment, high one-time investment, usually manage more complex, slower fire. WS sprinklers can have a sprinkler system protection or no protection sprinkler system of the building, Chongqing FM Approved fire sprinklers, nozzles with closed windows do not open a window or glass partition internal protection to be as open sprinklers use of external fire spread protection. As a special use sprinklers, sprinkler installation, glass materials and specifications, installation and fix the glass must follow product instructions and specifications. Tianjin FM Approved fire sprinklers | Year Anyuan Electromechanical | Macau FM Approved fire sprinklers by the Hubei Chong Anyuan Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) is a leader in Wuhan, fire protection equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Anyuan electromechanical leadership in creating the staff warmly welcome all inquiries negotiations to create create a better future for electromechanical Anyuan.