300 tdi sedimenter outlet fitting - Defender Source
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  #1  
Old December 23rd, 2015, 09:15 AM
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300 tdi sedimenter outlet fitting

Anyone know what thread the fitting is on the stock sedimenters, or the part number? The work manual only lists the blanking plug but I want to use one of the extra outlets on there for fuel to an Espar.

Part #7 on the attached photo is the thread I'm interested in so I can get an adapter to go from whatever it is to a barb.

Thanks.
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  #2  
Old December 23rd, 2015, 10:23 AM
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It is either 1/2" or 14mm depending on your unit.
I have a whole drawer full of fittings.
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Old December 23rd, 2015, 02:27 PM
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It's not metric, the quick calliper check I did on the blanking plug (while fuel was siphoning out of the port I opened) was 12.5mm and straight thread, I'm assuming this is a 1/2-20 UNF then? They seem to be a rather rare item.
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Old December 23rd, 2015, 02:42 PM
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Yes. 1/2" UNF. Not rare. Used in all -5 sized fittings.
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Old December 23rd, 2015, 03:27 PM
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Where do you get them from John? The usual suspects (gregg's distributers, NAPA, Cambodian Tire, Swagelok, etc) all go silent on the phone when I ask.
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Old December 23rd, 2015, 04:44 PM
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NAPA USA won't have them, probably the same up north... Delphi, Lucas, or CAV will have them.
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Old December 23rd, 2015, 05:19 PM
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Quote:
Originally Posted by Blake View Post
Where do you get them from John? The usual suspects (gregg's distributers, NAPA, Cambodian Tire, Swagelok, etc) all go silent on the phone when I ask.
Greenline is one. Any hose or hydraulic place. Ask for -5 ORB. Toss the o-ring and use a copper washer.
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Old December 23rd, 2015, 08:31 PM
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Ah, fantastic. I was at Greenline this afternoon asking for 1/2-20 and they gave me a 10-32, said they had nothing in 1/2-20; now I search for -5 orb and there it is with a barb adapter and all. I don't understand how people can work at places like that and not understand the cross reference in thread sizing.

Off to go shopping again tomorrow.

Thanks again. 1/2-20 UNF, aka -5 orb (o-ring boss), aka 1/2-20 SAE, and probably a few others.
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Old December 23rd, 2015, 11:24 PM
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SAE Straight Thread O-Ring Boss Fittings | Valley Hydraulic Service, Inc.
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  #10  
Old December 24th, 2015, 09:57 AM
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Thanks, got it all. They had to do some cobbling of parts with a -5 orb to flare (JIC) which then went to a 90 1/4" barb.
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Old December 24th, 2015, 12:13 PM
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The fittings on this type of "filter" are designed for steel lines that are flared on the end with a straight nut captured behind the flare, similar to a brake line.
The seal is created by the flare on the steel line being compressed against a reversed shaped fitting inside the port where the "nut" is screwed into. A proper fitting would be a short section of steel flared pipe & then clamping a hose onto that pipe.
Even employing "O" rings or copper crush washer, it will be difficult to seal this type of straight threaded port as to not leak or allow air ingress into the fitting/port.
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Old December 24th, 2015, 04:01 PM
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I have to question the inverted flare fitting you're describing. The parts diagram clearly shows the blanking plug and it uses an aluminum crush washer for sealing. I'll have a peak when I put this together and confirm, but I don't expect to see a male flare end in the sedimenter.
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Old December 24th, 2015, 04:08 PM
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The copper washer seals perfectly fine and is as good as the non standard original flare. There are machined areas for the washers. The unused ports are blanked off with plugs that have copper washers from the factory.
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Old December 24th, 2015, 04:09 PM
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Quote:
Originally Posted by Blake View Post
I have to question the inverted flare fitting you're describing. The parts diagram clearly shows the blanking plug and it uses an aluminum crush washer for sealing. I'll have a peak when I put this together and confirm, but I don't expect to see a male flare end in the sedimenter.
He is using the ORB fitting with a copper washer on the sedimenter. The flare is the other end.
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