RVHS-type fire alarm valve signal with the valve opening and closing signals long-distance display. Low-voltage 24V power supply, when the valve is closed 25% (fully open start 1/4), the valve is closed signal can be passed to the control center. RVHS-type signal fire gate valve system specifically for fire fighting automatic sprinkler system developed products, products by the state fixed fire extinguishing systems and fire-resistant components of the Quality Supervision, Inspection and Testing Center of qualified inspection, and the Fire Department permission to produce. Has passed the ministerial product sign, known as filling the domestic blank, can replace the import of leading domestic products. The product provides firefighting water to provide security, will also further improve our high-rise building automatic sprinkler system reliability. RVHS-type signal fire gate valve is a special hand-operated gate valve on the basis of additional electric signal device made. In addition to the valve design and manufacture in accordance with national standards, and according to the valve installed in the automatic sprinkler system and the use of features, the use of stainless steel precision stems and maintenance of PTFE U-seal, and the addition of a unique O-ring stem On the seal (inverted seal) structure, to ensure that the valve is always open in the long-term state, the valve stem leakage, is conducive to installation and use of the ceiling. Electrical signal device is fully sealed precision mechanical and electrical box structure, the box with stainless steel parts and imported electrical components device is located below the operating hand wheel is not easy to be hit by the valve gland, equipped with micro-moving and pushing agencies to Gear and fixed gate valve opening and closing position of the "through", "off" electrical signals. RVHS type fire alarm gate valve purposes and features installed in various types of water supply and drainage, construction, petroleum, chemical, gas (natural gas), food, medicine, power plants, nuclear power, urban sewage and other pipelines, used to control the flow of media and pass Off, at the same time grasp the valve opening and closing state, especially for fire-fighting systems. 1, using a micro switch, the control room to achieve a direct observation of the valve on or off state. 2, the sealing effect is good, the whole Lined plastic valve plate, the valve body without grooves, sediment deposition is not easy, the discharge of zero. 3, flexible operation, the stem with thrust bearings and "O" ring seal, reducing the friction switch, to solve the problem of leakage of fill boxes. 4, resistance loss is small, the valve body is straight type, reducing the degree of fluid turbulence. 5, the key parts are made of special materials, no maintenance, long service life.
