FULL OPEN STYLE SILENT CHECK VALVE The silent check valve is applied on lift pipe or fluid pipe with pressure. The valve gate, with restoring force, will be closed at suitable speed when pump is shut down to separate the collision and noise betieen the inertia fluid (positive pressure) and the back flow (negative pressure) caused by power of . The silent check valve plays an important role on piping, especially applied on the outlet of the pump. The silent check valve applied on the outlet of the pump should be selected carefully, and it must be able to resist the highest pressure, the largest water hammer effect and the biggest fluid impact. If the silent check valve is not good enough, when silent check valve is damaged, it will cause the fluid flowing back and losing pressure or, more serious, the damaged parts will fall on the blades and damage the pump seriously and, hence, loses more money. Te avoid the defects mentioned above, our company manufacture a more practical and economical model, called " FULL OPEN STYLE SILENT CHECK VALVE" Features: » The design of the valve is full flow lift type and water flow does not directly push the valve gate. Hence, the valve can work for a long time and have huge flow rate. » The design of plug is hang type and automatically locating. It can adjust the close position of the plug no matter high or low pressure. » The design of sealing is "U" and it is suitable for high and/or low pressure condition. And the tightness of the valve gate is best. » The design of plug is semi-round and can resist higher pressure. » When the pressure is high, plug and seat work together to prevent the sealing from being pushed by the high pressure to lengthen the longevity of sealing. > Test pressure : Stainless Steel : 35 kgf/cm’ i Locating blot ——_ Ductile Iron : 35 kgf/cm” ; Cast Iron : 21 kgf/cm’ » Maximum applied pressure : Stainless Steel : 20 kgf/cm’ Ductile Iron + 20 kgf/cm’ ; Cast Iron : 16 kgf/cm’ Balbo vatabng » Vertical and horizontal installation is acceptable. ©The bypass valve set won't be attached if the diameter is lager than 6 inches. Part Name Body Material CastIron

IMPROVEMENT OF THE FLOW OF FULL OPEN STYLE SILENT CHECK VALVE The Improvement of Full Open Style Silent Check Valve on Flow Rate The full open style silent check valve adapts the lift open style plug and the plug has hidden bypass design, which will bring the smallest flow resistance inside the valve body. When fluid flow through the valve, and hence, will reduce the loss of pump running effect and improve the power efficiency. Since that, the defects of traditional silent check valve, e.g. Many turning points, large resistance, not smooth flow way and fluid impact the valve directly and shorten...