Bolted bonnet, rising stem, flexible wedge, extended bonnet design, back seat design, cavity pressure relief, low emission packing, hardface metal seat.
◎ Material: Stainless Steel,Alloy Steel
◎ Nominal Size:NPS 1/2*~24*,DN15~600 Pressure Rate: Class 150~2500, PN10~420 Temperature Range:-196℃~+150℃
◎ Operator: Manual, Pneumatic, Electric, etc...
◎ Features Description: bolted bonnet, rising stem, flexible wedge, extended bonnet design, back seat design, cavity pressure relief, low emission
packing, hardface metal seat.
◎ Application range:LNG, LPG, LNG low temperature conditions and long-distance pipelines such as oil, gas, and natural gas.
When the disc of the lift check valve slides along the vertical center line of the valve body and the medium flows forward, the disc is lifted by the fluid thrust and the medium passes smoothly; When the medium stops flowing or reverse flowing, the valve disc quickly closes under the action of its own gravity and the reverse thrust of the fluid to prevent the medium from flowing back. This valve is usually equipped with a guide sleeve to ensure that the disc remains smooth during lifting and accurately falls back onto the seat.
The Power Station Gate Valve is mainly suitable for the pipelines of various systems of thermal power station, cutting or connecting the pipeline medium. Compared with other valve products, the power station gate valve is characterized by high temperature and high pressure. It is counted as a unique and closely sealed structure. The higher the pressure, the more reliable the sealing performance. Due to the characteristics of performance and technical characteristics and working conditions, the product has also formed the characteristics of other products that cannot be replaced. This type of valve should generally be installed horizontally in the pipeline. The power station gate valve has the design characteristics of ordinary wedge-type gate valves. The valve body has a guide mechanism to prevent rotation when the gate is turned on or closed to ensure that the seal of the gate on the valve seat is correspondingly accurate. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.
The axial-flow check valve has a unique axial flow design, and its spool is aligned with the flow direction, significantly reducing the resistance loss when the fluid passes through. The spool is driven by spring or fluid pressure for quick opening and closing. When the fluid is flowing forward, the spool is pushed open and the fluid passes smoothly. When the fluid flows in reverse, the spool is quickly closed, effectively preventing backflow, and ensuring the stability and safety of the system operation.