I don't recognise those numbers, but the description sounds like you are talking about a pressure relief. If this is a pressure relief, do not alter it, but if you can get it identified and replaced as altering it in any way could put the system in jeopardy.
HI Michael,My name is ***** ***** I will help with your question. I have attached the datasheet to this chat thread to see if that helps you. I am still working on your question and will get back to you soon. Let me know if it is the wrong datasheet.
Hi Micheal,I don't think the needle valve can be adjusted and I don't know if you would manage to get just the needle. You can get a replacement valve for <£50 maybe worth considering changing the whole pressure switch.I will see if I can find a replacement needle and get back to you if I can source one. Does the valve have any more numbers after 022?