1. High pressure check valve disc disc, seat channel around the axis of rotary motion, due to the channel into a streamline in the Industrial Valves, flow resistance is smaller than l butterfly check valve, suitable for low flow velocity and flow not often change the large diameter of occasions, but should not be used for oscillating flow, high pressure check valve sealing performance than lift check valve. Butterfly check valve points single type, double disc type and for the most part three, the three forms mainly by the valve diameter, the purpose is to prevent the backflow medium flow or stop, decrease hydraulic shock. 2. High pressure check valve disc along the vertical centerline of sliding body check, internal thread check Industrial Valves can only be installed in horizontal pipe runs with the high pressure small check valve disc can be used on the ball. Butterfly check valve body shape and cut-off valve ( To stop valve general) Fluid resistance coefficient is larger, so it. High pressure similar to cut-off valve, check valve structure body and disc is the same as the cut-off valve. Disc upper part and lower part of the cover processing has a guide sleeve, Jane Jane disc guide can be freely within the valve light guide Jane, when the downstream of the medium, the disc by medium thrust open, when stop the flow of medium, the disc landing on the hanging on the seat, to prevent medium counter-current role. Straight-through butterfly check valve medium import and export channel direction and seat vertical direction; Vertical lift check valve, import and export of its media channel direction and seat in the same direction, its a straight-through flow resistance is small. 3. High pressure check valve is a pin shaft rotating disc around the seat of the check valve. Disc check valve has simple structure, can only be installed in horizontal pipe runs, sealing is good. 4. High pressure check valve disc along the center line of the Industrial Valves body is sliding valve. Pipeline check valve is a new kind of valve, its small size, light in weight and good processing technology, is one of the check valve development direction. But the fluid drag coefficient is slightly superior to swing check valves. 5. High pressure check valve is cut off for boiler feed water and steam valve, it can lift check valve and globe or Angle valves of the comprehensive function. In addition, there is - Some is not suitable for pump discharge to install the check valve, bottom valve, spring loaded, Y type check valve, etc.
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