4 Advice to Choose a industrial check valve manufacturer

Choose the Right Valve by Answering Key Questions First

Published: August 1, 2018
Last updated: December 30, 2021

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Knowing What Makes a Valve the Right Choice
Valves control gas and liquid flow in almost every process and system. While common, choosing the right valve can be time-consuming and confusing.

Begin valve selection by gathering basic information on system performance requirements. Knowing these will make it easier to find the right valve. The following tips focus on how to match valve features with these requirements.

Tip 1 – Valve Size and Type
Choose the right valve type. Every valve needs to perform one or more basic functions:

• Shut off flow
• Divert flow
• Mix flow
• Pressure relief
• Backflow prevention
• Adjust flow

Function determines the design of standard valve types. These are some of the most common valve types:

• Check valves
• Ball valves
• Needle valves
• Metering valves
• Toggle valves
• Stopcocks
• Relief valves
• Regulators
• Pinch valves

Properly sizing the valve is also critical. The right valve choice means matching the valve’s size to expected flow through the system.

Common Valve Types at VMA, Valve Manufacturers Association of America

How to Select the Right Valve (with Pros and Cons) at Indelac Controls

Tip 2 – Materials of Construction
Understand the chemical compatibility requirements. The valve materials need to be compatible with the gases or liquids flowing through it. Plastic valves usually resist harsh or corrosive chemicals better than metal valves.

Miniature Ball Valves: Plastic, Brass or Stainless Steel? at ISM, Industrial Specialties Mfg.

Chemical Compatibility Chart at ISM, Industrial Specialties Mfg.

Tip 3 – Performance Requirements
Determine the pressure and temperature requirements. Identify both the temperature and pressure ranges where the valve will be installed. Metal valves tend to withstand higher temperatures and pressures than plastic valves. Metal valves are also usually best for pressurized gases as they tend to be stronger than plastic valves.

A Selection Criterion for Pump and Valve Reliability at Processing Magazine

Tip 4 – Check Valves Have Special Requirements
Ensure the new check valve will work as expected. Consider the response time needed as well as the cracking pressure required to open the valve.

Another consideration is whether the valve is normally closed or normally open. Basic check valve designs require positive downstream pressure to open, usually referred to as normally closed check valves. Others require a positive backpressure to close, known as normally open check valves. Choosing appropriately between these can improve check valve reliability. Base this decision on whether the valve is usually open or closed during normal operation.

Some check valve types may not work properly if mounted vertically instead of horizontally. Flow direction (upwards vs downwards) and fluid density both matter for check valve designs that can be mounted vertically.

Checking Out Check Valves – An Introduction at ISM, Industrial Specialties Mfg.

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Tip 5 – Maintenance
Don't forget to consider ongoing maintenance. Any valve choice should include attention to maintenance requirements for both reliability and stability.

A good example is ball valves. They resist clogging, jamming, or malfunctioning but are not suitable for adjusting flow. Using them to control flow can lead to leaking or premature failure.

Valve connection type affects the ease and speed of repair or replacement. Each connection type (threaded, barbed, push-in, Luer, etc.) has its pros and cons.

Plant and Equipment Maintenance at HSE, Health and Safety Executive

Knowing Where to Start Makes Valve Choice Faster and Easier
Knowing particular information beforehand makes choosing the right valve easier and more certain. There will always be complications like application requirements, operating conditions, and chemical compatibility. Starting with basic valve requirements will simplify and speed up valve selection:

• Valve size and type
• Materials of construction
• Performance requirements
• Check valve specific requirements
• Maintenance planning

Some Additional Resources

How ISM Can Help You Find the Right Miniature Valve for Your Application
Personalized customer service and resources available at the ISM website can greatly help when selecting a valve. Available resources include chemical compatibility reference guides, dimensional drawings, and product data sheets. Our online and PDF flow control valve catalogs provide access to various miniature valve types, connection types, materials, and sizes.

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Check valves, also known as one-way valves, are used to flow fluid in a predetermined direction and prevent any backflow or reverse flow. When designing a fluidic system that requires a check valve, it is essential to select one that will operate reliably and with precision. Many critical applications cannot tolerate any backflow as even the slightest amount could negatively affect system performance or may even cause damage to upstream components the check valve is intended to protect. Understanding what needs to be considered when selecting a check valve is crucial to ensure your system performs as intended.

This eBook was written by engineers to highlight selection criteria that engineers should consider when deciding on a check valve to use in a fluidic system.

Download Your Copy of An Engineer's Guide to Selecting a Check Valve to Uncover:

• What a check valve is and how it works
• Check valve functions and configurations
• The critical performance characteristics of a check valve
• The environmental factors that impact the design of a check valve
• Check valve performance trade-offs and design challenges
• Potential failure modes of a check valve

The company is the world’s best industrial check valve manufacturer supplier. We are your one-stop shop for all needs. Our staff are highly specialized and will help you find the product you need.