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#1
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Fuel pump fittings
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Hash: SHA1 Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. Thanks, Evan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBWgwCoo/Prlj9GScRAtjkAJ44O3QJUxeJmJRV4si2uftxMpXclgCdE8nr 7aTnnU2XKUIibHVjlrcsFh8= =Otfg -----END PGP SIGNATURE----- |
#2
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In article ,
Evan Carew wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. Thanks, Evan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBWgwCoo/Prlj9GScRAtjkAJ44O3QJUxeJmJRV4si2uftxMpXclgCdE8nr 7aTnnU2XKUIibHVjlrcsFh8= =Otfg -----END PGP SIGNATURE----- Normally, fuel pumps have NPT ports, so you uce AN with the appropriate NPT size on one end. |
#3
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Evan Carew wrote...
Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. I suppose it depends on what kind of fuel pump you're referring to. If it's the Delco mechanical pump on tons o' Lycomings, you need special fittings. See: http://www.vansaircraft.com/cgi-bin/...57-268-372&bro wse=engines&product=pump-fittings Or if that gets chppoed, go to www.vansaircraft.com, find the accessory catalog, and search for fuelpump fittings. Dave 'thread head' Hyde |
#4
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"Dave Hyde" wrote in message ... Evan Carew wrote... Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. I suppose it depends on what kind of fuel pump you're referring to. If it's the Delco mechanical pump on tons o' Lycomings, you need special fittings. See: http://www.vansaircraft.com/cgi-bin/...57-268-372&bro wse=engines&product=pump-fittings Or if that gets chppoed, Well, not chppoed but chipotled maybe go to www.vansaircraft.com, find the accessory catalog, and search for fuelpump fittings. Dave 'thread head' Hyde |
#5
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Hash: SHA1 Orval, Well, I just received a shipment of standard AN fittings with NPT on one site & I can say that these definately don't fit. Sigh. Order and wait another week. Evan Orval Fairbairn wrote: In article , Evan Carew wrote: Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. Thanks, Evan Normally, fuel pumps have NPT ports, so you uce AN with the appropriate NPT size on one end. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBW00ioo/Prlj9GScRAi+zAJ4xUGfoJFVQD0U3dNA9QwTsebX+HgCfWiNI XKCHfP0ghggKQhNUXMkhELg= =2Qi2 -----END PGP SIGNATURE----- |
#6
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Have you tried an AN fitting in the hole--if it's recessed for an "O"
ring then use an AN union + O-ring---may have to cut off the flare if it won't go all the way in. (they make special fittings like this,(esp. for hydraulic pumps) but I never have one when I need it Evan Carew wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. Thanks, Evan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBWgwCoo/Prlj9GScRAtjkAJ44O3QJUxeJmJRV4si2uftxMpXclgCdE8nr 7aTnnU2XKUIibHVjlrcsFh8= =Otfg -----END PGP SIGNATURE----- |
#7
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Hash: SHA1 Jerry, What kind of o-ring is used? Evan Jerry J. Wass wrote: Have you tried an AN fitting in the hole--if it's recessed for an "O" ring then use an AN union + O-ring---may have to cut off the flare if it won't go all the way in. (they make special fittings like this,(esp. for hydraulic pumps) but I never have one when I need it Evan Carew wrote: Do I need to get those special (straight thread) fittings for my fuel pump or are the regular NPT AN fittings good enough. Thanks, Evan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBXISjoo/Prlj9GScRAqNpAJwLIry6ED+eP4TRflgDeq2o3h6SUwCbBaxk +FsKvIX0rKapAIRfPAbXW0I= =dgDN -----END PGP SIGNATURE----- |
#8
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Evan Carew wrote...
What kind of o-ring is used? *sigh* http://www.aircraftspruce.com/catalo...ycfuelpump.php See bottom of page. http://www.wicksaircraft.com/catalog...641/index.html http://www.vansaircraft.com/cgi-bin/catalog.cgi and search for 'fuel pump fittings' http://www.chiefaircraft.com/cgi-bin...search-air.cgi and search for 'fuel pump hardware' I'm sure there are more. Dave 'fitting end' Hyde |
#9
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Hash: SHA1 Dave, Yeah, I've been to those exact pages, & will note for the record that none of those pages mention an o-ring for sale, however, the pictures do indicate that the parts come with said o-ring. If not, like I said, I would like to know the particulars for when I go a calling the very well informed A&S sales people (tongue firmly in cheek here). Dave Hyde wrote: Evan Carew wrote... What kind of o-ring is used? *sigh* http://www.aircraftspruce.com/catalo...ycfuelpump.php See bottom of page. http://www.wicksaircraft.com/catalog...641/index.html http://www.vansaircraft.com/cgi-bin/catalog.cgi and search for 'fuel pump fittings' http://www.chiefaircraft.com/cgi-bin...search-air.cgi and search for 'fuel pump hardware' I'm sure there are more. Dave 'fitting end' Hyde -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBXKsVoo/Prlj9GScRAlCvAJ40LHhVymVfWBkeVKvuMQj6MR+lZwCeIvWH NO3X2HgPDpRUHvbERMrFXBk= =pk1D -----END PGP SIGNATURE----- |
#10
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Evan Carew wrote...
Yeah, I've been to those exact pages, & will note for the record that none of those pages mention an o-ring for sale... You might note that none of the fittings pictured are simple 37 deg flare to NPT fittings - there's a wider bearing surface for the O-ring/NPT end. The Lycoming standard solution does _not_ appear to be to stuff an O-ring over an NPT fitting, cut down or otherwise. Dave 'field mod' Hyde |
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