According to the flow particularity selection of valve

The valve open and close the valve fittings and valves flow channel shape with a certain flow characteristics. Must take this into account when selecting the valve.
1, truncated and connected media valve
Usually select the flow resistance is small, the flow path through the valve, such valve gate valve, globe valve, plunger valve. Downward closure valve, the flow path twists and turns, flow resistance than other valves, it is less preferred. , However, allows a higher flow resistance Occasion closed valve can also be chosen.high temperature solenoid valve
2, the control flow valve
Usually easy to adjust the flow valve. Such as the regulation valve, throttle valve, the plunger valve, because the proportional relationship between its valve seat size and stroke of the opening and closing member. Rotary (such as plug valves, ball valves, butterfly valves) and flexural Body type (pinch valves, diaphragm valves) valve can also be used for throttling control, but usually light in the applicable limit valve diameter range. In most cases, people usually change the shape of the valve shut-off valve made after throttling should be noted that, by changing the height of the opening of the gate or globe valve throttling is extremely unreasonable. Because the management of the media in the throttling state, the flow rate is high, the seal face Erosion, loss of seal off Similarly, the throttle valve is used as the cut-off device is not unreasonable.
3, for the valve to shunt
Based on the conversion to the shunt needs, this valve may have three or more channels, suitable for optional plug valves and ball valves, most of the commutation shunt valve selection of this type of valve. In some cases, other types of valves with two or more, only suitably connected to each other, can also be used as a medium for the manifold.
4, with the suspended particles in the medium with a valve
If the media with suspended particles, the most suitable for the opening and closing parts along the sealing surface of the slide valve with a wiping action, such as flat gate.two position three way valve