This website requires Javascript for some parts to function propertly. Your experience may vary.

Inlet valve problems on Ingersoll Rand screw compressor | Air Compressor Guide
Join one of my courses on compressed air and air compressors. Click here.


Inlet valve problems on Ingersoll Rand screw compressor

  • Question Title: Inlet valve problems on Ingersoll Rand screw compressor
  • Asked by: Guest
  • Asked On:
  • Answers: 1

                        the unloader valve actuator is working properly, however after inspection the inlet valve was found closed, causing  the compressor to shut down on inlet air restriction during startup.

How do i repair the valve in order to open when loading and closes when unloading?


Answers & Replies

avatar
Cas
Hi Rex,

Thanks for your question.

First, make sure the the control system is working 100%. In other words: that the inlet valve is getting it's control air signal to open or close.

If that's OK, but the inlet valve simply stays closed, then the inlet valve is probably dirty inside and/or stuck.

The inlet valves very often have a big main valve (for opening / closing) and 1 or 2 auxiliary valves (pilot valves) which are also used for blow-down, etc.

First, open and clean these pilot valves. They are often the problem (dirty or worn o-rings).

Then if that doesn't help, the main piston is stuck. You have to open it completely. (Be careful, there's a very powerful spring in most inlet valves. Don't simply undo some screws, it can pop open in your face).

Clean and replace all sealings inside. It's best to get an overhaul kit from IR so you can replace are wear-parts.

Good luck and let me know if you need any more info!

Cas

Log in or create an account to make a comment...