Fortunately, NGL, the Shell spec and KBR specification are all mass per unit of time.
No visible leakage generally applies to a hydrostatic test, in which case water is readily visible if leaking. So when the valve is full of helium, I can only assume that if I spray the joints with toluene or...
'NGL
BS 6364:1984
Specification for valves for cryogenic service
Although I will probably refer to:
EN 1626:1999
Cryogenic vessels - Valves for cryogenic service
Joe
Thanks 'NGL, but I have an older machine, an Ultratest F.
I did find a repair site, Tech Services in Connecticut that also sells sniffing wands for these older machines.
The specification for testing will be the Shell Spec., British Standard, a KBR spec., etc. Trying to cover as many specs as...
I purchased a used Helium leak detector to perform some cryogenic testing on ball valves.
The detector did not have a sniffing device.
Do I need a specific sniffing device for a Leybold Ultratest F (expensive) or can I buy a generic device or can a device be manufactured?
Has anyone tried to create a particular material appraisal for ASTM A29, type 4130 materials? I am starting to look if there is a code case or some other data to tie in a pressure/temperature limit?
Also need one for cap screws made from ASTM A574?
Joe
