What are the most common sizes of threads on espresso machine pressure switches?

The most common size is the ¼” BSP-G thread. You will find this one on most Ma-ter, Asco and Parker pressure switches. There are also some pressure switches which have a 1/8” BSP-G thread.

Does this answer your question?
Yes
No
Sorry about that
How can we improve it?
Submit
Thanks
Your feedback helps improve this answer for everyone.