Hebei Jinghangyu Valve Manufacturing Co.,Ltd

Today we share 3 points about fire pressure reducing valves as follows. 1. The use of pressure reducing valves to reduce pressure zoning water supply should comply with the following provisions. (1) The performance of the pressure reducing valve used for fire fighting water supply should be safe and reliable, and should meet the requirements of fire fighting water supply. (2) Fire pressure reducing valve should be selected according to the design flow and pressure of the fire water supply, and the design flow should be in the effective section of the pressure reducing valve flow pressure characteristic curve, and check at 150% of the design flow, the pressure reducing valve outlet dynamic pressure should not be less than 65% of the design value. (3) Each water supply partition should have no less than two groups of pressure reducing valves, and each group of pressure reducing valves should be set up as a backup pressure reducing valve; (4)  Fire pressure reducing valves  should only be

Ball valve.  Is evolved from the plug valve, its opening and closing member is a ball, the use of the ball around the stem axis rotation 90 ° to achieve the purpose of opening and closing. Ball valve in the pipeline is mainly used to cut off, distribution and change the direction of media flow, designed to V-shaped opening of the ball valve also has a good flow regulation function.   China Made Fittings Manufacturing And UL Stainless Steel Threaded 2" Water Ball Valve   Benefits. ● Have the lowest flow resistance (almost 0).  ● can be reliably applied to corrosive media and low boiling point liquids because they do not clog during operation (in the absence of lubricant).  ● Complete sealing over a wide range of pressures and temperatures is possible.  ● Fast opening and closing is possible, with opening and closing times of only 0.05 to 0.1s for some structures, ensuring that they can be used in test bench automation systems. When opening and closing the valve quickly, the operati