Diaphram for a Central Pneumatic Model 47065

by Joe Edmondson
(Norcross GA)

Diaphram for a Central Pneumatic Model 47065 where can I buy one?

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Jul 01, 2015
HF # 47065 Pressure Switch
by: Matt

Just ordered one from an Amazon store (Wessol) located in KY, not China. Cost $9.18, no tax or shipping, and will be here in a few days. Here's the info: "New Heavy Duty Air Compressor Pressure Switch Control Valve 90 PSI -120 PSI
ESUMIC" and it lists a 3 year warranty!

May 31, 2015
Pressure switch for CP #47065
by: AZBen

You are correct, that could take way too long. However, there is a similar switch with fulfillment by Amazon, meaning they have it at their warehouse already. You should get this one for a couple dollars more in only a week or less. Only two days for Prime members.

http://www.amazon.com/Compressor-Pressure-Switch-Control-90-120/dp/B008QV2O8G

May 30, 2015
Pressure switch & diaphragm
by: Bill

Azben, good tip for the diaphragm. Might work for a regulator diaphragm as well.

Be aware that delivery of the switch you refer to could be a month or two.

May 30, 2015
Quick fix diaphragm...
by: AZBen

I made the diaphragm from a bicycle inner tube cut square with scissors and punched with a small leather punch tool on hardwood backer board.

Reassembly is easier if you clamp the spring to keep it from pressing everything open. I used two medium hand spring clamps.

If you need a complete switch the OEM switch is on Amazon at http://www.amazon.com/2013newestseller-Compressor-Pressure-Switch-Control/dp/B00FDQ1FVO/

It was under $8 at the time of this writing.

Mar 03, 2014
diaphragm
by: Doug in s.d.ca

What diaphragm?

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Model 47065 pressure switch leaking?

by Elton Johnson
(Winter Springs Florida)

Central Pneumatic 21 gal. 3hp Model 47065
the gasket is broken. Can I get a new one or should I
replace the switch.
Elton
___________________
The hunt for spare parts, Elton, is sometimes long and fruitless and there is no guarantee that after all that time and effort, you will find a part for your compressor pressure switch.

I consider them a consumable, and for the cost of a new switch, that would be the way I would go.

Keep the old one for spare parts if you feel it worthwhile.

As long as the new switch fits the footprint of the old, has a similar pressure range, and interfaces with the unloader, it's all good.

Cheers,

Bill


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May 30, 2015
Quick fix diaphragm...
by: AZBen

I made a diaphragm from bicycle inner tube and scissors and leather punch for the bolt holes. It's still working.

Sep 16, 2012
My Compressor also Leaks
by: Robert

I also have a a CN 2 HP 38898 compressor. I seem to have this same issue:

"My compressor was leaking air. Took off the cover that says DO NOT REMOVE. NO OWNER SERVICABLE PARTS. It is the switch compartment. Found a gasket had a hole in it. It was easy to get at and the gasket should be replaceable"

Here is a picture:

i23.photobucket.com/albums/b370/HTCstephen/p003b.jpg

Is the gasket discussed where I have the lower red arrow? It looks like there are 4 bolts - indicated by upper red arrow - that need to be removed in order to get to this gasket?

Thanks ...
__________________
Robert, thanks for the photo. Without removing the pressure switch, I cannot confirm if this is the leaking gasket, or if the leak is caused by the diaphragm inside the base of the switch.

Yes, with the power off, and the compressor tank empty of air, the bolts you refer to will allow you to dismantle the pressure switch when they are removed.

If you have air in the tank now, you might want to use your PRV (yellow object with ring) to vent the air, to test the PRV. Pull out the ring, and when the air is gone, push the ring/rod back in.

B.

Mar 28, 2012
Central Pneumatic 47065 Pressure Switch
by: Dal

Sam, below, said he found a replacement pressure switch through Harbor Freight for his central pneumatic 47065 21 gallon air compressor in January. I need the same part but cannot find it on their website. Putting in the item # he listed (11535) comes up empty as "no match" for that item #. Anyone know where I can find a replacement pressure switch for this unit?

Jan 18, 2012
Found the discontinued pressure switch
by: Sam

Ordered the replacement pressure switch which includes the gasket today from Harbor Freight. Part number is 11535, costs $12.99 plus shipping. It is listed for an 8 gallon compressor but the tech guys say it is the same as the older 21 gallon model's.

Jan 17, 2012
Found leak in pressure switch
by: Sam

So I also had a leak inside the pressure switch, took the whole thing apart and found that the rubber gasket that I believe trips the unit to turn off when it reaches max pressure had a hole in it and the rubber was wasting away. This piece goes in between the pressure switch and the pressure gauge. Is it possible to buy this part alone? Does anyone know the name of this specific gasket? Thanks!

Oct 03, 2011
pressurr switch
by: frank

I have a central pneumatic 47065 21 gal.that does not hold air. Please advise where I canht purchase a new one.

_______________________
Bill says...

A new what? Air compressor? If you want the same Central Pneumatic brand, the source is Harbor Freight. Shop around, though, there are lots of great deals out there on DIY type air compressors.

Where is your existing compressor leaking from?

Cheers,

Bill


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rubber diaphragm that goes under the pressure switch

by Frank
(Mesquite texas)

I need the rubber diaphragm that goes under the pressure switch.
__________________
Frank, not too many places sell parts for pressure switches for DIY type air compressors.

My advice is that by the time you factor in your time chasing the pressure switch parts, and trying to reassemble the switch (with the point springs and so on) you will safe time and a lot of aggro by simply acquiring a new switch and replacing the whole thing.

That's my advice.

Bill

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Sep 14, 2013
pressure switch
by: Frank

I bought a pressure switch at grainger for $51.00.put it on today it work ok.

Sep 14, 2013
Pressure Switch diaphragm
by: Buster

Just my 2 cents worth.
I had an antique pressure switch on an old compressor and the diaphragm was bad. I found the material at an industrial supply house that has hoses and sheet packing. The piece was so small, about 4 inches square, they just gave me a sample piece for free and if worked well. Just to preserve the antiquity of it, the switch was made in the '30's and had the electrical connections on the outside on a piece of ceramic, cool to look at, dangerous to run, NOT OSHA approved by any means, just a time consuming restoration project.

Buster

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