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At 02:40 PM 2/27/97 -0500, you wrote: >I have one of the old Sherwood yoke manifolds. It is the one that >uses the brass/brass connections (no O-rings). Herein lies the >problem. I can't seem to get this thing to seal without leaking. >The condition of the seats and ends looks good in my opinion, but >then again, I'm not an expert at high pressure fittings. > snip One of the problems with the Sherwood manifold is that the shaft under the nuts actually thread into the isolation valve body were there is another nipple with an o-ring on the end. Over tightening the nut causes the shaft to back off enough for air to get past the o ring. If you look at the nut, it has a hole in it which you can line up with a hole in the shaft underneath. You can use a drift pin or drill bit to tighten or loosen. If its leaking, I would pull it apart and check the o-ring. A little lock-tight helps hold the whole thing together, but don't over tighten. Hope this helps Ian marshall@va*.co* <http://www.vaxxine.com/advtech> -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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