The opening and closing of the globe valve is plug-shaped flap, Hongfeng globe valve sealing surface was flat or cone, the valve flap along the fluid center line for linear motion. Valve stem movement, (common name: dark rod), there are lifting rotary rod, (common name: Ming rod) is the closing valve (valve flap) along the valve seat center line of the valve. Depending on the type of movement of the valve disc, the change in valve seat opening is in direct proportion to the valve disc stroke. Due to the valve stem of this type of valve opening or closing stroke is relatively short, but also has a very reliable cut-off function, but also because the valve seat opening changes in proportion with the valve stroke is proportional to the flow rate is very suitable for regulation. Therefore, this type of valve is well suited for shut-off or adjustment and throttling purposes.
Sport Style Safety Shoe,PU/TPU Injection Safety Shoe,Low Cut Safety Shoe
Work Footwear Co., Ltd. , http://www.nssafeshoe.com