How to choose according to the valve flow characteristics

Valve fittings and valves open and close the channel shape of the valve has a certain flow characteristics. In selecting valve, you must take this into account.

     1. Cut off media access and use the valve

     Often choose a smaller flow resistance, the channel for the straight-through valve. Such valves are gate valve, globe valve, plunger valve. Valve closed down, due to channel twists and turns, the high flow resistance than other valves, solid little choice. However, in allowing a higher flow resistance of the settings, they may choose closed-type valve.

     2. Control the flow valve used in

     Is usually easy to regulate flow of the election off valves, such as the control valve, throttle valve, plunger valve, the valve seat because of its size and hoist parts trips proportional relationship between the Cheng Wang. Rotary (eg, plug valves, ball valve, butterfly valve) and the wedge body style song (clip tube valves, diaphragm) can also be used for throttle valve control, but usually only in a limited range of the valve diameter to apply. In most cases, people often change the shape of cut-off valve made after throttling valve flap to use. Should be noted that by changing the valve opening or closing valves to achieve a high degree of cutting role is extremely unreasonable, because the pipeline throttling state media in a high velocity, sealing face susceptible to erosion, wear and tear, loss of cut, seal effect. Similarly, using the throttle as the cut-off device is unreasonable.

     3. Commutated shunt with valve

     According to the need for the diversion, this valve may have three or more channels, appropriate selection of plug valves and ball valves. Most of the change to the shunt valve used in such valves are optional. In some cases, other types of valves with only two or more properly connected with each other, but also can be used for the streaming media.

     4. With suspended particles in the medium used in the valve

     If the media with suspended particles, the most appropriate use of its open and close the sliding pieces along the sealing surface of the valve with a wipe effect, such as the flat valve. 

  ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com g