You are not logged in.

Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

What To Do



Tuesday, April 14th 2009, 8:33am


When using a pump where should I place the filter? It is currently located after the pump but we get small objects into our pump that creates a problem.


Supreme Member


Tuesday, April 14th 2009, 1:11pm

While I have no practical experience with pumps, it would make logical sense to have a filter before a pump to keep stuff out of the pump. I don't see how filtering the water could ever harm a pump. About the only caviot for the pump is to make sure enough junk doesn't build up in the filter that the pump could run dry. The only caviot for the filter would be to make sure it is rated for the constant pressure it will be under. That doesn't mean if you have a water system with a static pressure of 50psi that you can use a filter rated for 50psi. Any plumbing system is going to have pressure spikes as water starts and stops and other things happen in the system. So as an example, I would think that a filter would have to be rated for a MINIMUM of 150psi before installing it in a system that has a static pressure of 70psi or less. Even then, its questionable in the long run what might happen to it. As an example, plumbing codes dictate that if you use PVC, it must be burried under ground. Yet 1" Sch 40 PVC has a max operating pressure of 270psi (and a bursting strength of 1440psi). For exposed applications (such as in a basement) PVC can not be used, and instead copper is rated for use. But copper has an operating pressure rating of about 500 psi.


Supreme Member

Posts: 5,306

Location: Metro NYC


Wednesday, April 15th 2009, 1:07pm

Two strainers - inlet straining protects the pump, and outlet straining finishes cleaning the water.

Similar threads

Rate this thread