How to Select the Right Valve (with Pros & Cons)

The suitability of a valve for a specific application is defined by the materials used in relation to the transported fluid as well as its mechanical design. Here is Indelac Valve Selection Guide.

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Reduce leakage to the environment

Gate

Available in large sizes

Low pressure limitations

Can be used with slurries and viscous liquids

Slow open and close time

Used as a shut off valve

Erosion of the seat and disk can occur

Easy to maintain and disassemble

Poor throttling characteristics

Inexpensive

Difficult to repair

Inherently fire-safe (when used with a metal sheet)

Should not be used in sanitary applications

Bidirectional

Globe

Can be fast-acting

High head loss

Precise control

Large opening for disk assembly

Can be used in high-pressure systems

Heavier than other valves

Cantilevered mounting of the disk to the stem

Low coefficient of flow

Not good for clean or sterile applications

Pinch

Very Clean

Cannot be used in high temperature applications

Excellent drainage

Cannot be used in high pressure applications

Minimal turbulence

Cannot be used with gas media

Low airborne contaminants

Low maintenance

Low weight

Can be used in explosion-proof lines

Inexpensive

Once the right valve has been selected, it is time to select the right actuator! See link below to Indelac Actuator Selection Guide:

Advantages of the globe valve: good closing

The globe valve is a plate valve with strong sealing performance, simple operation and long service life. The globe valve can stop the flow in the pipeline or regulate the flow, which is characterized by the door plate moving to the vertical direction to separate the medium, so the closure is better and can completely cut off the fluid in the pipeline. Therefore, in the case that the required flow is not large, it is more appropriate to choose a stop valve.

The disadvantage of the globe valve: the pressure loss is large

The disadvantages of the globe valve are some limitations when used to regulate the flow rate, because when the valve is closed, the resistance of the fluid becomes larger, resulting in pressure on the pipeline, thereby reducing the flow rate, and the size of the opening directly affects the pressure loss. In addition, during the use of the globe valve, because of the role of the door plate, the fluid movement in the pipeline will have a greater impact, and there is a greater vibration and noise.

Disadvantages of globe valve: high cost of use

The cost of gate valve in use and maintenance is lower than that of the globe valve, but it is easier to be replaced by the globe valve in the case of small flow requirements. Therefore, according to the actual situation, multiple factors need to be considered in the selection of gate valve or globe valve.

Gate valve advantages: not easy to plug

Gate valve its door plate type cylinder or rectangle, can move along the pipeline axial linear, for more viscous liquid or high-speed flow of gas, can choose a more suitable circumdirectional gate valve, it is not easy to be blocked by the media containing particles, etc., in some sewage, particulate matter content is high occasions can also work better.

Disadvantages of gate valve: the sealing effect is general

Gate valve in the closing process through the door plate compression seal body to achieve sealing, and this sealing method is not suitable for large vibration occasions, and its sealing effect often directly affects the service life, so in the case of high sealing effect requirements, generally not recommended to use gate valve.

Gate valve advantages: smaller operating force

The lever effect of the gate valve is 0, which is easier to operate than the stop valve when the pipeline is interrupted, and the operating force is smaller than the stop valve, which is easy to quickly open or close the valve, which makes the gate valve more suitable than the stop valve in some occasions that need frequent adjustment.

In summary, the globe valve and gate valve have their advantages and disadvantages, in the selection and use need to be determined according to the specific situation and demand. At the same time, it is necessary to pay attention to its maintenance and maintenance during use to extend its service life.

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