Haskel Mini Booster Set Up - Article

Jonathan Davies

Hence the use of SAE fittings on HI and Haskel pumps which seal with an O ring, even possibly an O2 compatible one

This is worth a read for those who are interested.

Flammability and Sensitivity of ... - Google Book Search

*_Roberto_*

Thank you Mathias.
This is exactly what I was looking for.
It would seem that the Haskel is having almost half the displacement than the MPS C3 booster which is by the way much heavier as well.

trimix

Ok, now I'm worried too, although I have not yet had a meltdown...
Does anyone have any information about which thread sealant would be appropriate for booster O2 use??

__________________

BOOM!

diverreb

Basically follow procedures for O2 Fills... Fill slowly, and you should be fine.... Let the Booster rip and she gets hot.... It's on you.

Also when wrapping, leave the bottom two threads bare to insure you don't cut any tape and introduce it into the system.

If there is an O2 safe tape, I'd like to know what it is.... I'd be happy to switch. The Booster came sealed from Haskel with some of the white tape already in place. I assume it's Teflon tape. If anyone knows otherwise, please post.

Richie


Titre du document / Document title

Ignition of PTFE-lined hoses in high-pressure oxygen systems: Test results and considerations for safe design and use
Auteur(s) / Author(s)

BARTHELEMY Herve ; VAGNARD Gerard ;
Résumé / Abstract

Because of their flexibility and robust construction, high pressure hoses are a part of the equipment for industrial gas producers and users need to fill and to use gas cylinders. For oxygen service, a polytetrafluoroethylene (PTFE) lined hose is generally used because PTFE is one of the best ignition resisting plastic materials in oxygen. This type of hose has been used successfully in gaseous oxygen systems by the major gas producing companies for many years, but recently many incidents have been reported in Europe involving PTFE lined hose ignitions, mainly associated with oxygen distribution manifolds. In this paper we try to analyze the different causes of PTFE hose ignitions in oxygen service (oil contamination, particle effects, heat of compression, and so forth) taking into account the incident reports. Numerous tests have been carried out in L'air Liquide's laboratory (oil contamination measurements, pneumatic impact tests with oxygen, and so forth) on many hoses produced by many manufacturers from different countries. Results and types of failure have been analyzed by taking into account the effect of hose quality, particles, fittings, pressure, and temperature. It appears that ignitions reported on oxygen client manifolds are probably due to an "adiabatic compression" process, though they were at times initially attributed to particle effects (particle impact or static electricity) or to poor mechanical behavior. To prevent such incidents, solutions are proposed for medical and industrial applications.

Revue / Journal Title
ASTM special technical publication ISSN 0066-0558 CODEN ASTTA8

Source / Source
1988, no986, pp. 289-304 [16 page(s) (article)]

Langue / Language
Anglais

Editeur / Publisher
American Society for Testing and Materials, Philadelphia, PA, ETATS-UNIS (1911) (Revue)

Localisation / Location
INIST-CNRS, Cote INIST : 8548, 35400012072519.0200

Copyright 2007 INIST-CNRS. All rights reserved
Toute reproduction ou diffusion même partielle, par quelque procédé ou sur tout support que ce soit, ne pourra être faite sans l'accord préalable écrit de l'INIST-CNRS.
No part of these records may be reproduced of distributed, in any form or by any means, without the prior written permission of INIST-CNRS.
Nº notice refdoc (ud4) : 16249669

Ignition of PTFE-lined hoses in high-pressure oxygen systems: Test results and considerations for safe design and use

diverreb

More on PTFE tape.....

Government Spec A-A 58092
COMMERCIAL ITEM DESCRIPTION
TAPE, ANTISEJZE, POLYTETRAFLUORETHYLENE

The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-T-27730 for all Federal Agencies.

3.4 Chemical properties. The tape shall be at least 99 percent polytetrafluorothylene and shall contain no materials that are combustible in the presence of oxygen or that produce toxic vapors at
temperatures up to 260°F.

7.1 Intended use. The tape is intended as an antiseize and sealant of pipe threads of liquid and gaseous oxygen systems of 2,000 psi and less.

Jimmer

:: GF THOMPSON :: click "products", then "t tape" and check out the "Masters Orange and Yellow T Tape". The Orange stuff is for O2 systems, and is what we've been using for blending whips at my LDS.

Jim

netmage

Richie,
Got to see one of these in action on Monkey's Bahamas trip... Definitely sold me on one when I get a garage...

p/n for check valve...?

I notice you didn't include a needle valve or digital gauge in your whips - thoughts?

__________________
"You want a bailout bottle? Go get the pink one from Fill Express, B*TCH!" - John Cogan

"If I sent my rebreather back, I might live longer, but would I live more?" - Abbo