What is the size of wrench needed to remove a pressure relief valve on an air compressor. A 9/16 is a little loose and no metric I have is any closer. People tell me they use an adjustable wrench. I can't believe they're not a standard size.
What is the size of wrench needed to remove a pressure relief valve on an air compressor. A 9/16 is a little loose and no metric I have is any closer. People tell me they use an adjustable wrench. I can't believe they're not a standard size.
Not 17/32? Measure it with your calipers.
Bill D
When I replaced the drain valves on my compressor, i couldn't get a wrench that'd fit and let me turn hard enough to loosen them - the valve wanted to deform instead. I used a pair of channel locks to remove the valve (and beat it up in the process) - some self locking pliers or a pipe wrench would do the job just fine here. The 9/16 was good enough to get the new valves in and tight enough to not leak.
I can't recommend the Knipex pliers-wrench enough for this kind of thing. They are every bit as good as everyone says they are.
Steam locomotives have three pressure relief valves. Set like 5 psi apart. That way you know if the two lower pressure ones are set too high.. They should blow in order from low to high.
Bill D
I have even used a pipe wrench for such a thing (buggers up the flats but it isnt anything that goes on/off very often)
A small pipe wrench is invaluable. The harder you turn it, the tighter the grip becomes. I even have one only 6" long. And I have one 24" long, and several in between. You can only clamp a set of vice grips so tight.
NOW you tell me...