Tank valves: U.S. Divers, and Sherwood

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dave148

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Messages
18
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Location
Colorado Springs
# of dives
200 - 499
I'm trying to figure out what O-rings I might need to service:
-An early 80's U.S. Divers J valve
-A late 80's U.S. Divers K valve
-Sherwood 5000 K valves (late 80's, early 90s)

without taking apart the valves before I order the seals.

I have a recent "Aqua Lung Military & professional operations Authorized Technician
Technical maintenance manual for J, K, Z and Twin manifold valves", and my USD
valves look the same, at least from the *outside* as those shown in the manual. But
I have no Idea if these things have changed over the years. There is also the normal
problem of converting from the USD part numbers to standard O-ring sizes. In the
O-ring tables listed on this site, I only found equivalencies for regulator part numbers,
and not valves.

So, does anyone know:
-Have there been any changes in these valves over the past 30 years?
-USD-> standard O-ring conversions?
-Any standard parts to replace in a preventative maintenance other than O-rings,
and burst discs?
-Any schematics/ manuals/ standard O-ring sizing for the Sherwood?

I'm getting close to making a special order for EPDM O-rings, and I wanted to make
my list as close to complete as possible.
 
https://www.shearwater.com/products/teric/

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