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8th Sep 2019, 08:22 PM #46Most Valued Member
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Thanks guys i took another look at that link im out by .003mm i think i got that right from those measurements but i think i know how to reD that chart now
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12th Sep 2019, 05:50 PM #47Most Valued Member
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Tried 3 times to order this pilot valve from amazon au and it rejected my credit card payment i had the money in the account but it wouldnt charge it https://www.amazon.com.au/gp/product...?ie=UTF8&psc=1
my order for the Mc Millan adjustable whistle type valve came today looks very basic but should work good, It has two large relief slots to release pressure also picked up some turps, paint brush and a tin of paint stripper if i am doing this its going to be a good job, i went into super cheap auto and picked up a $9 spray gun cup it fits my spray gun but does not screw all the way down there is a inner lip stopping it screwing right on inside the cup i think it may act like a seal
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12th Sep 2019, 07:05 PM #48Golden Member
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Once again be aware that these items appear to be sourced from the USA. Threads on the model you linked to are not specified, but other similar Rolair equipment specifies NPT threads, which are not commonly used in Australia. They are not interchangeable with BSP threads, so you may also need NPT to BSP adapters to fit them to compressors sold in Australia. It's worth checking before trying to fit them and damaging the threads.
Frank.
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12th Sep 2019, 07:39 PM #49Most Valued Member
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Thanks Frank i did notice the thread i am planning on placing it on my air manifold that i am making this will go on one of the distribution ports so i need to drill and tap it accordingly but finding the NPT tap is not easy on ebay
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12th Sep 2019, 08:12 PM #50Member: Blue and white apron brigade
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BSPT 1/8" uses 28 TPI, NPT uses 27"
1/4" and 3/8 BSPT uses 19 TPI ,NPT uses 18
Typically these will thread inside each other for a few turns and then they stop.
I had one today - a 1/8" pressure sensor and was wondering why it would not go more than 2 turns into a 1/8" bush, of course the sensor was NPT.
With 1/2 and 3/4" threads, both BSPT and NPT use 14 TPI so its often hard to tell what is what..
The difference between NPT and BSPT is thread contact angle, BSPT uses 55 and MPT uses 60º or is it the other way around
The same TPI's may fit onto each other and if you use enough teflon tape or thread sealant they can usually be made to seal.
Still not advisable for high pressure apps. I don't consider 100 PSI to be that high pressure, for me that's well over 150PSI.
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12th Sep 2019, 08:59 PM #51Most Valued Member
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Thanks Bob, one of the pilot valves i was looking at had MPT thread but i believe the terminology is male take off thread or something like that i read maybe i am confusing it with something else
I want the correct fittings for my set up as not to blow a fitting off wildly like as people and animals will likely bear near the compressor
So far i have ordered the 3/8" and 1/4" bsp taps these will fit my tank take off and one of my salvaged pressure gauges
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17th Sep 2019, 08:16 PM #52Most Valued Member
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Thanks for the heads up on those taps fella's the 3/8" 19 fits perfect also the second one i bought i think it was 1/2"? 19 fits my larger pressure gauge its weird how the measurements are 12mm but classed as 1/4" when really 1/4" is 6mm so i am trying to get the right tools but i am in business now those taps showed up today
finding it really hard to get the paint off the tank this is how it looks at this stage and that's after 4 layers of paint stripper removing one layer than hosing it off and applying another layer, the paint on the tank is incredibly durable its so hard to get it off i have been watching youtube videos of guys just painting over the old paint but that looks really dodgy
just need to order a 11mm and 14.5mm drill bits and i am ready to make the manifold
pics not uploading for some reason maybe i have reached my accounts limit on pics?
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17th Sep 2019, 08:29 PM #53
The size difference you are seeing is due to the threads being pipe, British Standard Pipe (BSP).
Pipe is measured by inside diameter, tube on the other hand is measure by outside diameter.
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17th Sep 2019, 10:21 PM #54Most Valued Member
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Thanks Droog, Tried to reply but i think the site is having problems
That is kind of weird from pipe to tube as i think the inside of my pipe is like 1/4" hole i will have to double check
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28th Sep 2019, 05:07 PM #55Most Valued Member
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Was debating weather to buy a new spray gun but thought i would try my old dandy one, the afternoon didnt start off well i had a lot of things i needed to get read and prep the tank for spraying i had to make this diy wire brush from the grinder fit the drill as it was the wrong size for my grinder so i prepped the tank than i was wondering why my spray gun was not painting like it should there was hardly any paint at all coming out and new to painting i just assumed it was the blocked 8 holes on the nozzle so i cleared them than tried again same thing i than pulled the gun apart to clean it and it was dirty but still not the problem i than thought maybe the paint is to thick i had thinned it to recommended amount of 15 percent it was still way to thick so i thinned it to around 50 percent and walla it painted beautiful but i had already laid down some paint so the job is not perfect and i done the unthinkable with everything to do and plan out i forgot the wipe down only put one coat on i may go another or just leave it as is
the new air compressor worked bloody flawless even while i had the gun wide open spraying it kicked in and out so it maintained a tank even while spraying how good is that
having problems still with uploading pics
will get some better pictures tomorrow
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28th Sep 2019, 07:38 PM #56Most Valued Member
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Hey Gazza, I call it pain....ting
cheers, shed
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28th Sep 2019, 08:09 PM #57
Hi Gazza,
The problem with your pictures is that they are too big ! Use a lower resolution to take them !Best Regards:
Baron J.
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28th Sep 2019, 08:26 PM #58Most Valued Member
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Ahh thats why i keep forgetting when i do a phone reset to reset the picture size thanks
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28th Sep 2019, 09:20 PM #59Most Valued Member
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Heres the tank guys its no where near perfection the original paint must have been heavy duty industrial strength i spent probably about 6-7 hours in total over 5 days trying to remove the paint i hit it with the flap disc which done barely nothing at all i than hit it with 4 seperate layers of paint stripper that still didnt work i than today used the wire wheel on the drill just to knock off the loose bits just crazy how resilient this paint was to remove
There is paint still left under the red paint
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