Free 173 Best Homemade Tools eBook:  
Remove advertisements
Results 1 to 1 of 1

Thread: Stainless Steel Compression Ring Replacement for Pool Backwash Valve

  1. #1
    Paul Jones's Avatar
    Join Date
    May 2014
    Location
    Del Mar, California
    Posts
    1,132
    Thanks
    4,886
    Thanked 1,216 Times in 597 Posts

    Paul Jones's Tools

    Stainless Steel Compression Ring Replacement for Pool Backwash Valve

    I have a 60 Sq. Ft. diatomaceous earth (DE) filter for the pool filtration system. The filter system is contained in a stainless steel canister and consists of eight fabric grids that are coated with DE. Filter grids are attached to a backwash valve that controls the flow of the water for filtering and backwashing. The backwash valve is located near the bottom of the filter and is held in place with bronze compression ring secured with six stainless steel ¼-20 hex head screws. The original backwash valve and compression ring are made from bronze. Over the years the bronze compression ring corrodes, eventually cracks and breaks, and the unit develops a slow leak. I have replaced the bronze compression ring before but this time I decided to replace the compression ring with one I made from ¼” thick T-304 stainless steel plate.

    The new 0.250” thick T-304 SS compression ring is 6.8” in diameter, has a 4.65” center opening, and 0.115 step that mates with the bronze backwash valve. It was a challenge using my small horizontal band saw to cut out a 7” square of the SS plate. I couldn't cut the last inch of stainless steel plate from a 12"x12" plate and used the drill press to drill a series of connected drill holes to break it loose. I had previously ground a lathe tool for machining O-rings (see Lathe Cutting Tool for O-ring Grooves (and trepanning) ) and used this tool to trepan the center section to avoid removing most of the stainless steel with a boring bar. The compression ring fit perfectly and I expect the new compression ring to last a long time as compared to the factory versions made from bronze.
    Attached Thumbnails Attached Thumbnails Stainless Steel Compression Ring Replacement for Pool Backwash Valve-stainless-steel-compression-ring-replacement-pool-backwash-valve.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-pool-filter-backwash-valve-compression-ring-made-stainless-steel-t-304.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-pool-filter-backwash-valve-compression-ring-made-stainless-t-304.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-pool-filter-backwash-valve-installed-stainless-steel-compression-ring.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-installing-pool-filter-backwash-valve-improvement-stainless-steel-compression-ring.jpg  

    Stainless Steel Compression Ring Replacement for Pool Backwash Valve-machining-pool-filter-backwash-valve-stainless-steel-compression-ring.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-center-section-removed-custom-lathe-trepanning-o-ring-groove-tool.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-making-final-cut-where-horizontal-bandsaw-fell-short.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-cutting-t-304-stainless-steel-plate-valve-compression-ring.jpg   Stainless Steel Compression Ring Replacement for Pool Backwash Valve-layout-valve-compression-ring-made-t-304-stainless-steel.jpg  



    Post your reply!
    Join 33,912 of us and get our 173 Must Read Homemade Tools eBook free.



    173 Must Read Homemade Tools
    Last edited by Paul Jones; 05-29-2016 at 10:24 PM.

  2. The Following 2 Users Say Thank You to Paul Jones For This Useful Post:

    Jon (01-10-2016), kbalch (01-11-2016)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •