Cylinder collar connection
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I have two simple questions for help: 1. Can the steel cylinder fittings with British standard G5/8\" LHF be used interchangeably with those with Chinese standard W21.8 LHF? 2. What is the difference between LOK and OD in bayonet connections, and what do they mean respectively? If anyone knows, please give some guidance
OD stands for outer diameter, while LOK means something similar to LOCK. You can learn about threads on your own*
If it is a sampling cylinder, it is recommended to ask the manufacturer to connect it directly, leaving a slip joint. Could LOK be Swagelok? Both these bushings and connectors are specified by outer diameter (ODxx) to prevent mismatches.
Thank you for your replies. There is still one thing I’m not clear about: I searched online for the specifications of domestic standard hydrogen gas cylinder connectors, which are W21.8-1/14\"LHF. What do these specifications mean? What should be the specification of the bushing that connects to the adapter at the back? ()
This post was last edited by Qingchengjun on 2016-3-8 at 15:51. The information provided is limited, incomplete, and may be inaccurate. LHF could denote left-handed threads; there are two types of cylinder threads, with right-handed threads usually denoted as R or without any indication. Threads used for storing inert or oxidizing gases are marked with L, while those used for storing reducing gases use the symbol W. The thread standard used in China differs from those used abroad; 1 may refer to the pitch, and 14 indicates 14 threads per inch, which is a standard value
Does anyone who is more experienced know what the numbers 600 and 9 refer to in this elbow, N-90E-3/8\"OD-3/8\"OD-SS-600-9?
There is also this N-CONNECTOR-3/8\"OD-1/2\"MNPT-SS-600-1-8; it was taken from the material list. Since procurement might be necessary, I’m not sure what this model means
Take a look at this material to find out which manufacturer’s it is, and then ask the manufacturer for a sample.