Work Instructions: Diaphragm Check Valve Replacement
Note: Use the same cracking pressure check valves on the Arch or Manifold. The cracking pressure is the minimum water pressure that opens the check valve to allow water to pass through.
Parts Needed:
- 4psi diaphragm check valve (P-CHE-2150) https://shop.tommycarwash.com/P-CHE-2150
Tools Needed:
Procedure:
- Shut the water off to the Arch and/or manifold that the check valve is located on.
- Drain the check valves.
- Rebuild and/or replace the Check valves.
- When installing the check valve, thread tape does not need to be applied. If thread tape is used, the thread tape might rip off when installing and get into the check valve causing it to not be able to close all the way.
- Tighten the top of the check valve finger tight. Do not use channel locks to tighten it down. Over-tightening will shorten the life of the check valve.
Instructional Video: