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Cupboard

Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

2011 Defender 110 Puma 2.4 HT Corris Grey

Have a made a booboo choosing PCL air connectors?

I wanted to be able to use standard fittings for my T-Max compressor that I'm wiring in to my Defender, and the ones we use on the farm are all PCLs so I defaulted to them. Yes, I did have to change the fittings because by default they're all on backwards on the T-Max and I'm plumbing in a pressure switch and very small tank.

Only the PCLs have got a much smaller hole through them than the ones I'm taking off, and they've got a much smaller hole though them than the cheapo Aldi bits and bobs I've got (I thought I'd try their regulator).

Part of me is saying that it's going to be a low enough flow compressor that a slightly restrictive coupler isn't going to make any difference. Part of me is saying that because it's a relatively low output compressor I should be giving it the best chance I can and restrictive couplers are just going to make a bad job worse. Part of me is just saying "oh shut up and get on with it".

I know that the fittings I'm using are fine on a decently sized windy gun, and I know that at full chat our 7.5hp compressor can't keep up with a few of them in the pipework and an open end, so they can't be *that* bad. But why does the little compressor use such big fittings and why are they all on backwards?

18th Mar 2016 10:03pm

leeds

Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8582

Many years ago I had a similar type of issue. I wanted to change the end fitting to a proper PCL inflators with a gauge mounted on so I did not have to fuss inflating tyre, take connector off, use pressure gauge etc.

Took it all to the local Pnumatic place and told the guy what I wanted to achieve. He sorted out what fittings were required and yes one was on backwards.

Think a trip to a Pnumatic specialist is on the cards for you. Much easier then trying to wade through a catalogue of 10,000 different parts

Brendan

19th Mar 2016 7:30am

discomog

Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2528

2015 Defender 90 Puma 2.2 XS CSW Santorini Black

Brendan is spot on - go to your local compressed air specialist as most of them have fittings in stock and can easily kit you out with fittings and flex hose etc.

You will be amazed how much air under pressure can pass through a small orifice, for example a 1/4" diameter hole will pass 104 cfm of air at 100psig. Your little 7.5hp compressor would have no chance of keeping up with an open ended 1/4" coupling.

Local compressed air house is your best bet for a speedy solution. Defender 90XS SW
Mini Countryman Cooper S
Morgan Plus 8

19th Mar 2016 8:27am

Cupboard

Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

Thanks guys.

I've already got heaps of fittings in stock anyway so that's not an issue

I do wonder why they use such giant fittings on the little T-Max compressor though.

19th Mar 2016 9:12am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8049

2011 Defender 110 Puma 2.4 USW Stornoway Grey

Not to buck the advice above

i have a T max compressor running the on board air in my 110 with warn air tank etc. i fitted PCL female coupling to take air tools, tyre inflater etc it running 6mm ED pipe so much smaller than wksp bore - works ok for everything i have needed to do

i wouldnt worry it will work fine, dont even spend more for such a little gain. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

19th Mar 2016 7:57pm

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