Valves are used to handle a wide variety of functions in controlling the flow of liquids and gases. With so many options available, it&#;s important to look at all of the factors to ensure you are selecting the correct valve for your application.
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1. Media Type
The characteristics of the liquid or gas type being controlled will determine the valve material that should be used. When monitoring harsh or corrosive materials, polytetrafluoroethylene (PTFE) and perfluoroalkoxy alkanes (PFA) are great choices, as they are able to withstand these conditions. When monitoring pressurized gases, it&#;s important to use metal valves for the highest level of safety.
2. Application Conditions
The selection of the correct valve sizing is the most important step in selecting the right valve for your application. An improperly sized valve can cause operation issues within the valve or elsewhere in the system. In addition to this, determine the temperature, pressure, and flow rate that your valve will be operating under. In most cases, metal valves can withstand higher temperatures and pressures than plastic ones.
3. Valve Function
Determine the need that your valve needs to fill. 2-way valves perform well for on/off control in a system, while 3-way valves can be used for on/off control, as well as for diverting or mixing media. Also, take note of whether your valve will be open or closed the most often. In order to extend the life expectancy, order a valve that is normally in that orientation and changes to the other direction when energized.
4. Actuation Method
Another consideration to be made is how the valve is to be operated. Identify if the valve will be manually hand-operated or if the valve will need to be actuated to turn off and on automatically. If the latter is chosen, decide whether the unit is going to be used with an electric, pneumatic, or hydraulic actuator.
5. Maintenance Requirements
If maintenance needs to be done regularly, ball valves are a great option as they resist clogging and are one of the simplest valve types to service. Ball valves are also available in 3-piece configurations, which consist of two end caps and a body. This allows the main body section to be easily removed for cleaning without disconnecting the end caps from the pipe, preventing the line from being shut down during maintenance.
The W.E. Anderson&#; division of Dwyer Instruments, Inc. produces a broad line of competitively priced valves and valve control products, including: globe, butterfly, ball, manifold, actuators, and solenoid valves. Each valve type has a variety of options to meet specific application needs. Valve position indicators, valve positioners, and electric or manual pneumatic actuators are also available for a complete valve package. To learn more about Dwyer&#;s valve product line, please visit our website.
The company is the world’s best Pressure Test Valve supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
/5 Tips For Selecting The Right Valve
Valves control liquid and gas flow in almost all systems and processes. They are found almost everywhere, in homes, in industries, in hospitals, you name it. As common as they are, it is still a big challenge in choosing the right valve for the right job.
The choice of a valve depends on the performance requirements of a system. Here are 5 tips for selecting the right valve.
Before you buy a valve, ensure that it will work the way you expect. Ask yourself how long the valve takes to respond and how much pressure is required to open it. You should also consider the normally open vs normally closed valves because each serves a different purpose.
An appropriate choice can improve the reliability of the valve. What determines the choice is whether the valve is usually more closed or open during the normal system operation.
Valves are made from different materials with different qualities like strength and chemical resistance. So you need to know the strength and chemical compatibility of your valve of choice. A valve must not react with the liquids or gases flowing through it.
If you are dealing with corrosive or harsh chemicals then plastic valves can be the best option.
Valves vary in types and sizes and this is what determines the type of use they can be put into. Valves can be used to adjust fluid/gas flow, mix flow, divert flow, or shut off flow. They can also be used for backflow prevention and for releasing pressure. The function of a valve determines which valve type to choose.
The most common types of valves include shutoff valves, pinch valves, regulators, relief valves, stopcocks, toggle valves, metering valves, needle valves, ball valves, and check valves. To make the right choice, you need to match the valve&#;s type and size to its expected function in the system.
A valve is expected to work under different conditions of temperature and pressure. A good valve should continue to perform well under the lowest and the highest temperatures and pressures of the system.
Metal valves are better than plastic valves in highly pressurized systems especially if the operating temperatures are also high. This is because metals are stronger than plastics.
Tips for selecting the right valve can&#;t be complete without considering maintenance. Valves do wear out with time, so you need to factor in maintenance cost in your choice for a valve. This is important for both application stability and valve reliability. Working with a faulty valve is very dangerous as it may lead to fluid or gas leakages.
You should also consider valve connection type when choosing because this affects the speed and ease of replacement or repair. Each connection type (Luer, push-in, barbed, threaded, etc) has its advantages and disadvantages.
To make your valve choice easier and faster, you need to know where to start. Having all the information beforehand will help to make your choice more certain.
You need to understand the issues like chemical compatibility and operating conditions of a valve, and applications requirements of the system from the very start before you make a choice. That wraps up the tips for selecting the right valve.
If you want to learn more about valves and fittings, you can visit our blog.
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