AV-1 type wet alarm valve DN65 ~ DN200AV-1-type alarm valve is separated from the valve seat ring, rubber lining Shandong clapper valve, water flow alarm check valve. For wet automatic sprinkler system can be installed vertical or horizontal. When the system flows into the equivalent of a steady flow nozzle or only Shanghai valve plant, to start an electric and / or hydraulic automatic warning devices. Body ductile iron manhole covers and hand seat for the bronze, DN65 valves valve of stainless steel, other valves valve ductile iron, all valves are made of EPDM for valve lining. AV-1 type alarm valve piping accessories include: system pressure gauge, bypass valve, the main drain valve and the alarm test valve. The bypass valve allows the pressure to produce a small amount of the increase and the slow flow of water into the system-side line without causing the valve to open, in order to reduce the possibility of false alarms. AV-1-300 type rated working pressure of 2.07Mpa. AMD-1 pressure-pressure maintenance device AMD-2 Air Compressor controlled pressure maintenance device AMD-2-type air compressor-controlled pressure maintenance device with a field adjustable pressure switch for pre-action system, dry system or deluge system, preaction system pressure dry pipe network control start. Air compressor without pressure tank supporting the use, by a pressure switch on / off pressure valves, control air compressor on / off, to maintain the pressure in the pipe network setting range. AMD-2 is used in place of the central company DU-2, GEM companies F326 and STAR company S465 pressure maintenance device Tyco Fire Suppression and Building Products (TYCO FIRE SUPPRESSION & amp; BUILDINGPRODUCTS valve, hereinafter referred to as TFS & amp; BP) is having a unified strategy of business unit with globally recognized products and leading brands, including Tyco (TYCO FIRE & amp; BUILDING PRODUCTS) and Ansul (ANSUL), GRINNELL MECHANICAL, HYGOOD, PYRO-CHEM, RAPID RESPONSE, SKUM. Valve Factory | Year Anyuan Industrial (certified) | Qinghai by the Hubei Chong valve 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.