Alphacool Eiszapfen quick coupling female bulkhead G1/4 inner thread

[commissar]

Hi,
what is the difference between Alphacool Eiszapfen quick coupling female G1/4 inner thread - deep black and Alphacool Eiszapfen quick coupling female bulkhead G1/4 inner thread - deep black. What is bulkhead?

Thanks

 

[Thomas_S]

i.e. you can use a bulkhead fitting to guide the connection through an opening in the case wall, for example, and fix it on the other side with the nut. The connection can then be fixed in or on the case.