The holes you describe sound as though they're provided as extra accessory
ports, in that the switch assembly was probably made as a universal
replacement part.

So it would just be a multi-tap manifold for a tank pressure gage, a tank
pressure air outlet, a port for attaching a regulator, a hose quick
disconnect, and any other connections you might need to make to suit your
needs.
You can most likely find 1/8" or 1/4" pipe plugs at most hardware places,
for any of them that you don't use.
The only other material you should need will be thread sealant.

WB
..............

"Jimmy" wrote in message
...
I was hoping that someone in this newsgroup might be able to help with
this
problem. I recently inherited an old Sears 1hp air compressor from the
1970's -- (model 160.171140). It wasn't in great shape but since I don't
have one, I thought it would be great to fix up for the shop (this was
back
when Sears/Craftsman made decent tools right?). Anyway, I ordered the
replacement parts from Sears at greatly inflated prices and they arrived
today. They are not identical to the ones that were originally on the
compressor, not that I expected them to. Most of the pieces worked out
ok--the check valve was identical, gaskets fit great, shut off and safety
valve is different but checks out (actually made of brass instead of the
original plastic!) but the pressure switch is giving me some trouble...

It is a Square D Pumptrol Pressure Switch (I have the model and specs if
that will help) and on the underside of the swich is attached a valve with
four threaded holes in it. The one on the bottom is where it attaches to
the
shut off/safety valve, but I don't know about the other three? They are
all
connected so the tank wont hold any air. Can I get some covers or plugs
to
fill them all? On the old switch, there was a guage that showed the psi in
the tank but this new one does not. Should there be another valve or guage
threaded into the pressure switch? I'm a bit worried that if I simply plug
those holes, the motor won't know when to shut off? Is that how it works?

I would really appreciate any help you could give me on this problem. I
dread having to call sears for assistance since I don't really have half a
day to wait on the tele just to talk to someone who has no idea what
they're
talking about so they can tell me that I need to schedule a service call!!

Thanks Jimmy






----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---