Hello everyone,
Our production is intended for oxygen service (industrial and medical), meaning everything has to be cleaned for oxygen service in accordance with strict standards. We have a range of inspection methods employed to qualify the cleanliness of the final product; including Direct...
Hello everyone,
Rubber and plastic (flexible) hoses in oxygen system often incorporate what is a called a distance piece, and is described in ISO 14113. In short it is there to lessen the effect of adiabatic compression. Now the standard describes that the distance piece should have a volume of...
Hello everyone,
A filling plant is experiencing some issues when mounting fill adapters on the cylinder valves, see illustration image below.
Simply stated: The valve is supplied by another company; we supply the O-ring,connection piece and union nut.
The customer tightens the union nut with...
Hello everyone,
I am currently redesigning a H2 distribution and filling system (small diameter tubing (6-18 mm) - 250 bar working pressure) to reduce the chance of leakage.
In that regard I am looking at different SS tubing qualities and was wondering if any of you have experience with using...
Hi everyone,
This is a bit outside my usual purview, so I'm turning to you.
My company sells pressure regulators for (mostly) industrial gases, like oxygen, nitrogen and hydrogen, as well as flexible hoses that gets attached to the pressure regulator. The assembly is performed by the customer...
Hello everyone,
For a long time we have been using small sintered nickel filters for the inlet of our pressure regulators. The material is great as it is compatible with all the industrial gases we design equipment for. Unfortunately all of our suppliers are indicating that they will stop...
Hello everyone, I would appreciate some input on this topic if you have any:
My company (Based in Europe) produce, assemble and test flexible hoses lined with fluoroplastic tubing (PTFE and PFA) for the industrial gas industry, (amongst many other products used for this industry as well). This...
Hello everyone,
The industrial gas industry in Europe uses the whitworth thread extensively, and I'm wondering if any of you have any experience and input with these threads and strength calculations. The thread can be your typical BSP "G" thread per ISO 228-1, or individual gas standard...
Hi all,
So back in the day one could say that many common valve geometries had never been analyzed mathematically, and if they had, they were not readily available in design handbooks. This lack of analysis forced engineers to use graphical techniques to relate flow area to the separation...
Hello everyone,
I'm unsure of whether to post this under chemical, corrosion or metallurgy, so my apologies beforehand if this question is outside the scope of this forum.
Back in the 60's my company had a special degreasing/surface treatment process designed for their manufacturing purposes...
Hello everyone,
I'm often in a position where I have to design O-ring grooves for different compressed gas applications. Radial static installation, radial dynamic installation, axial installation, dovetail grooves, half-dovetail grooves, you name it. Trelleborg and Parker handbooks are good...
Hello everyone,
I am currently designing some new filling equipment for the compressed gas industry in my country. Relevant gases include oxygen, nitrogen, acetylene, hydrogen, helium, phosgene, phosphine ect.
Looking into the different cylinder valve outlet connections, I am familiar with...
Hi all,
Approaches to compressible flow varies, but applications are often assumed to be either isothermal or adiabatic. For longer pipelines isothermal flow conditions are usually adequate, and the Crane technical paper 410 is a well used resource. It does however lack when describing...
Hi all,
I have just recently joined this website, and it's my first post. English is not my mother tongue, so please bear with me. I hope I post this in the right forum, as it relates to use of degreasing chemicals.
Question background:
My company (Based in Norway) designs, manufactures and...
