The stop valve has five over-flow areas that need attention. According to the flow direction sequence, they are end channel area, waist drum throat area, valve seat opening area, flow area between valve disc and valve seat when the valve is opened, and flow area of rear waist drum...
The independent valve seat of the globe valve is usually connected by welding. Because the welding rod should go deep into the valve body during welding, the convenience of welding must be considered when designing the valve seat fitting surface. According to the past experience, two structures are recommended...
According to the current standard API 623-2013 “steel globe valves – Flanged and butt welded ends, bolted bonnet”, bs1873-1975 “steel globe valves and stop check valves with flanged and butt welded ends for petroleum, petrochemical and related industries”, and GB / T In the standard 12235-2007 “steel globe valves...
Stop valve is an indispensable fluid control product in modern industry, which plays a role of cutting off and throttling in the pipeline. Stop valve belongs to the category of general valve, which is widely used and widely used. Because its manufacturing process is not very complex, there are...
Overview of electric globe valve: The electric stop valve is installed with electric actuator on the basis of the globe valve. The opening and closing of the valve are controlled by the electric device. The connection between the valve and the actuator adopts the direct connection mode. The electric...
Working principle of pneumatic globe valve: Pneumatic globe valve is a valve with compressed air as the power source. It adopts remote control, and the main control room manually or automatically triggers the action command to make the air inlet and exhaust solenoid valve act and supply and exhaust...
Bellows globe valve structure: The bellows globe valve is mainly changed from packing sealing to bellows sealing. The upper part of the outer surface of the bellows is welded with the valve body, thus forming a closed space in which the liquid is located. The valve stem is inserted...
Structurally: The length of the gate valve is shorter than the globe valve, and the height is higher than the stop valve. Pay attention to the height when installing the rising stem gate valve. This should be paid attention to when the installation space is limited. The gate valve...