HH49 micro Slow Close butterfly valve

HH49 micro Slow Close butterfly valve micro Slow Close butterfly valve works micro Slow Close butterfly valve in the discharge line of available water, sewage, water and other media, both to prevent the media back, can effectively limit the destructive water hammer to ensure safe pipeline. Not suitable for containing solid particles and the viscosity of the particulate media. Micro Slow Close butterfly valve has a new structure, small size, light weight, small fluid resistance, seal reliable, smooth opening and closing, wear resistance, long life, oil, ease the closure from the media impact, a more good energy-saving effect and the like. HH46X HDH48X HH49X series micro Slow Close butterfly valve has been the major industrial, construction and other industries widely applied, the reaction is good. It works micro Slow Close butterfly valve consists of body, two semi-circular valve return spring, storage tanks, slowly closing the smaller cylinder group, the needle valve (fine adjustment valve) component. The principle thrust rely mainly on imported media, will open the two valve smoothly. At the same time, imports of medium into the lower pressure within the cylinder piston pushes the piston, the piston upper portion of the oil is pressed into the small end of the respective sides of the cylinder body through a needle valve, a small cylinder piston rod extends. When the inlet pressure falls below the outlet pressure of the media, the media will have a return, this time the valve spring and the media back in the role, will shut down automatically. However, due to the piston rod in the extended position, the valve can not withstand all closed, left has an area of ??about 20% of the media through, which played a role in the elimination of water hammer. Piston valve is closed after the first two steps into slow rapid closure, to both anti-motor reversal underway to eliminate mute role. Technical parameters Model Nominal strength test pressure sealing pressure Suitable temperature Suitable medium slow closing time HH46X 1.0 1.5 1.1 ≤80 ℃ seawater ≤60 seconds HH48X 1.0 2.4 1.76 sewage HH48X 1.6 3.75 2.75 Shimizu major part name body parts names valve stem, cylinder, piston spring seat material steel, cast iron, ductile iron, cast steel, stainless steel NBR Micro Slow Close Check Valve connection size DN 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 L 140 150 170 180 190 200 210 230 250 270 290 310 330 350 390 430 470 510 550 H 200 215 225 235 280 290 310 350 415 450 480 550 585 290 720 780 840 990 1050 H1 88 98 108 118 130 148 172 210 240 264,297,324,351,480 434,491,549,600,655