invisible-man
New Member
Hi everyone,
I need to replace the automatic air vent valves in my domestic hydronic heating system and was going to use the Watts FV-4M1 valves.....I noticed that there are 1/8" and 1/4" sizes, does this relate to the thread size, as I do not know which ones to order.....is there a common size in a domestic system?
Many thanks, Martin
I need to replace the automatic air vent valves in my domestic hydronic heating system and was going to use the Watts FV-4M1 valves.....I noticed that there are 1/8" and 1/4" sizes, does this relate to the thread size, as I do not know which ones to order.....is there a common size in a domestic system?
Many thanks, Martin