Check Valves | Purestream Inc.

by Administrator19. June 2014 16:50

Choosing Check Valves: What You Need to Know

Many may think that check valves are little more than on-off switches to control water flow. Yet as the many industrial applications for these valves have grown, basic valve design and makeup has evolved to keep up with these changes. Today, there really is no such thing as “one-size-fits-all” valve. Choosing the right valve requires a fair amount of research into the job that it will be expected to assist with.

Matching Performance to Need

The first step in knowing which of the many check valves on the market is right for you is understanding if a certain valve’s characteristics will meet its service requirements. That requires an in-depth knowledge of every phase of the job needing to be done, including:

·         Pressures

·         Temperatures

·         Volume of flow

·         Corrosive elements

These factors should outweigh whatever considerations come with a valve’s purchase price, as well as the costs associated with installing and maintaining it.

Valve Composition

Or course, in order to truly understand how a valve will hold up under pressure, you need to think of what the valve is made of. Different metals and alloys deliver various levels of performance. Below is a list of different materials and what conditions they can endure:

·         Iron: Iron valves are typically made in three grades: Cast iron for smaller valves, ferrosteel for valves of medium thickness, and high tensile iron for large size castings. Each type can thrive in temperatures up to 450°F.

·         Bronze: Steam bronze is typically used for valves asked to endure a similar temperature range as iron. For temperatures above that, special bronze castings are available.

·         Steel: Steel is the metal of choice for those jobs where working conditions may be too severe for either bronze or iron. Both steel and stainless steel have been shown to stand up remarkably to the effects of piping strain, shock, temperature fluctuations, oxidation, and galling erosion.

A Partner in Selecting a New Check Valve


Check valves play a vital role in the wastewater treatment process. In order to deliver the best treatment service, your system has to composed of the right components. We at Purestream, Inc. have over 40 years of experience in providing wastewater treatment supplies. To put that experience to work in helping you choose the right check valve for your job, contact us today. 


Month List

Page List