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Support Equipment For PCP/HPA/CO2 and springers ,rams => Support Equipment For PCP/HPA/CO2 => Topic started by: redlined_b16a on December 07, 2019, 07:15:14 PM

Title: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 07, 2019, 07:15:14 PM
Looking to match threads on this valve
Or replace it.
Anyone know what this is

I robbed the pressure gauge long ago.
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: ShakySarge on December 07, 2019, 07:25:15 PM
It appears to be cga-347 but it’s a bit thick internally so I may be wrong. Not sure about the gauge port.
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 07, 2019, 07:34:56 PM
I have the gauge its 1/8" npt
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: Rob M on December 07, 2019, 07:52:26 PM
looks like its an NPT size.. maybe 3/4 or 3/8.. anyway it looks tapered. id check some of your plumbing fittings.a digital calipers could tell you pretty quickly the exact size.
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 07, 2019, 08:25:43 PM
If its NPT is near the 3/4" but the threads are to fine to be NPT
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: Rob M on December 07, 2019, 08:39:26 PM
Quote from: redlined_b16a on December 07, 2019, 08:25:43 PM
If its NPT is near the 3/4" but the threads are to fine to be NPT

ur right.. 3/4 is 14 pitch.. 3/8 npt is 18 ..

measuring the thread specs ( crest to crest and major diameter ) would solve the riddle
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 07, 2019, 11:17:20 PM
The thread o.d. measure .862"
Looks like 16 threads per inch but I'll get my thread gauge tommorow
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 07, 2019, 11:43:43 PM
Just tried my cga347.
Cga347 is a lil bit smaller and diffrent thread per inch
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: Rob M on December 07, 2019, 11:57:22 PM
Quote from: redlined_b16a on December 07, 2019, 11:17:20 PM
The thread o.d. measure .862"
Looks like 16 threads per inch but I'll get my thread gauge tommorow

sounds like 7/8-16 or 7/8-14 ( which was common at some point
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: Rob M on December 08, 2019, 12:03:23 AM
the 7/8th threads had some association with the advent of 3500 psi tanks , i did a bit of reading
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: Rob M on December 08, 2019, 12:07:33 AM
it should be 14 pitch , not 16, that would be odd.. put the calipers on 2 crests, the distance should be .071
Title: Re: Luxfer 3000 psi aluminum bottle thread size
Post by: redlined_b16a on December 08, 2019, 12:34:04 AM
Without my thread gauge I counted 8 threads in a 1/2" section.
I'll get the thread gauge tommorow