Wafer butterfly valve signal applied to the fire system control valve, normally open occasion requires, when the valve is open or closed to the specified location, signal device on the valve can be signaled to the Fire Testing Center can open or close the butterfly exhibit, Close the valve to prevent misuse and the impact sprinkler function. Product Features 1. Compact and lightweight, easy installation and maintenance, and can be installed anywhere on the 2. Simple structure, compact 90 ° operation open and close rapidly 3. valve operating torque, energy light 4. completely sealed soft sealing flange valve Z45X-16, a gas leak test zero zero total 5. Choose different pieces of material, suitable for a variety of media 6. Flow curve tending to straight line, adjust the number of tests the performance of a good opening and closing as many as 7 million times, long life 8. Where the use of gate valves, globe valves, cocks, valves and diaphragm hose pipe on the road, especially in the high-rise building fire safety systems and need to show the status of the pipeline system valve switch, can be replaced with the valve. Electrically adjustable butterfly valves are electric and electric control valve of a species. Connections are: flanged and wafer type. Industrial automation and control is an important execution units. Electric control valve installation points two analyzes: the installation location, altitude, direction and export must meet the design requirements, pay attention to the direction of flow of the medium should be consistent with the direction of the arrow on the valve body, the connection should be firmly tight. Electric control valve must be visually checked before installation, the valve plate should comply with existing national standards, "Universal Valve logo" GB12220's. For working pressure greater than 1.0MPa and play a role in cutting off the main pipe valve cryogenic valve, before mounting strength and rigorous performance tests should be carried out. Passing behind the prospective use. Strength test threaded forged steel valve, test pressure of 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage as qualified. Electric control valve according to the structure can be divided into bias plate, vertical plate, inclined plate and leveraged. Press the seal can be divided into soft and hard seal sealed two. Soft sealing type commonly used rubber ring seal, seal type commonly used hard metal ring seal. Flange forged steel valve | valve | valve provided by the Hong Kong Ming Ming Port Valve Co., Ltd., Dongguan. Port Valve Co., Ltd., Dongguan Ming (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the next port of the valve and you hand into the brilliant, for a better future!