Repairing and Rebuilding a Zurn Wilkins 600XL Water Pressure Reducing Valve 

Fixed my 1-1/4 600XL after 20 years. Wrapped 400 wet sand paper around 1/2 inch socket extension and rebored the bore as this video suggests at 1:40 but used a power drill. Replaced the small o-ring on 5/16 ID 1/8 thick from Home Depot for $2.95 for 10pcs. Flat sanded the rubber seat on grid 400 wet. Replaced the pressure adjustment screw on stainless steel from Amazon for $12 fo 8 pvs with nuts. All the other gaskets and membrane were ok. I think my valve stopped holding pressure 10 years ago. I did not notice because my city pressure is 60psi. Rebuild kit would not work unless you refinish the bore for the small o-ring and the o-ring in the kit is too small to seal the new larger ID bore. Valve design could be better. They know that the bore is the weak spot and should have a stronger fitting in it for it does not errode as much. And it should have 2 redundant o-ring.

Will miss ur demonstration which helped me alot..

I had to use a brass wire brush drill attachment to get the patina off the bore of my 70XL. Limited access made things difficult. I tried for hours with sandpaper ranging from 400 grit to 100 grit with various instruments (socket, allen key, finger) and had no luck getting anything off the o-ring bore. 10 seconds with the wire brush on a drill and the patina came off easily.

I tryed 3 ZURN600XL regulator and they all have leakage, where as the pressure goes to line pressure and the relief valve actuates, it has noting to do with the water heater, the plumbing store won't give me refund, what can I do? James Hotz

Tried to call the service department the number on the screen(1 888 one zurn) and got connected to AT&T . maybe I missed it, but there's no number to push to connect to Zurn customer service??? HELP!

Hello, My PRV acts more like a flow regulating valve after 5-6 years of service. What I mean is that no matter the adjustment I give the bolt, my gauge reads ~76 PSI even if I close the isolation valve and drain system before checking pressure. But when I open the hose bib with no gauge on and adjust it, I can tell a flow/pressure change. Does this indicate that a rebuild is in order given the o-ring seat is serviceable?

I have the Wilkins 600 pressure reducing valve in the main line by the water heater.. However, pressure is too low and adjusting the screw in or out makes no difference in the pressure. We are new owners and am told that the valve was installed to reduce what was once excess pressure. Any suggestions as to what the problem might be ?

You don't show to install anything! WTH?

I have a Model 600 3/4 inch. There is a small pin hole at the top of the bell.. Is that whole supposed to be there? I have a small drip of water coming from that whole. I am thinking if the pin hole is supposed to be there then I have a damaged O ring or Diaphram and I can purchase the repair kit.. Thoughts?

The way the furniture on the left side in the back blends into seemily the same material towards his hip, and at the same time on the other side of the table, the crosscut pice where the open face lines up PERFECTLY with the edge of the table, was REALLY messing with my head the first 30 seconds like this was some sloppy green-screen chopped up post production crap. But nope, just a camera in a room with a dude and some really coincidental things.

The number at the end of the video is wrong. It’s actually 855 not 888

How can I tell what kind of valve, I have if the tag on the valve is missing? I'm trying to rebuild it. Help.

so much talking and nothing of substance