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When to Use a Swing Check vs. Ball/Swing Combination Valve

By Chris Windsor

 When dealing with Sump and Sewage applications, check valves are something that you will come across often. There are many benefits to having a check valve installed in these systems even though it is not usually required by code. There are a number of different types of check valves available on the market

Installation Tips - Sump Pump Systems

BSC-200-SBStandard sump pump check valves (As seen in the image to the left) can also be referred to as a Swing Check's as this is highlighting the motion that happens inside the valve. There is usually a flapper that swings open and closed as water flows through it. There is another type that is called a Ball/Swing Combination Check Valve which is becoming more and more popular in Sump and Sewage applications.

In this blog, we are going to go over what a Ball/Swing Combination valve is, how it differs from a standard Check Valve, and when you would use one or the other.

 

 

What is a Ball/Swing Combination Check Valve & How Does it Differ?

17QSCBV-15SUBasically, this valve is a combination of a PVC Ball Valve and a regular Swing Check Valve. In the past, you would have had to install these separately if you wanted to include both in your system. With this product, you only need to install one valve to get the benefits of both.

By combining these two types you will:

  • Save install time
  • Save labor
  • Save space
  • Save money (1 valve to do 2 jobs)

With the additional feature of a Ball Valve, you are now able to prevent backflow for servicing the system. This is especially important when dealing with sewage applications. When needing to service these lines, you want to make sure that none of the discharge in the lines is going to come out.

Getting passed the obvious, the main difference between a Ball/Swing Combination and a regular Check Valve is the addition of the Ball Valve in a single product. In the next section, we will highlight when you would use these different products and why.

Important to note: It is important not to confuse this valve with a Ball Check Valve. The Ball/Swing Combination Check valve is still a type of Swing Check. 

 

When to Use Which Check Valve

Simply put, you could use a Ball/Swing Combination valve in any situation that you would use a check valve. If you are working on a sewage system, it is more important that you have one of these installed. A Sump system does not usually contain any contaminated material, so servicing this is not as big of an issue.

If you are just needing to put a check valve in a basic sump pump system, the regular one will work just fine and accomplish what you need it to. If your Sump system runs often, or you perceive that it may need more regular servicing, it may make more sense to put in a Ball/Swing Combination. This will save time and make servicing much easier.

These can be installed either vertical or horizontal when pumping out solid free liquids. When you are pumping solid or semi-solid liquids, these valves need to be installed horizontal (Up to a 45 degree angle is acceptable). Proper installation is imperative for this to work properly. 

For more information, check out our Ultimate Sump and Sewage Check Valve overview page

 

Tags: Sump Pump Check Valves, Sump and Sewage