Adjusting a Hobbs Pressure Switch

[SConklin]

How do you adjust a Hobbs pressure switch?



Skyler

 

[Rman]

isn't it just a different spring tensioner? You can get different pound springs from Summit.

 

[HEMI®Dart]

Mine looked like this:



#ad






I had one on a propane system a few years ago. Mine had a rubber plug on the top. Removed the rubber plug to expose the phillips head screw. Turning the screw in made the switch activate at a higher pressure. Screwing it out made it activate at a lower pressure.

 

[nickleinonen]

i've got a handfull of the same hobbs switches as above pic... mine are preset for 15 and 25 psi, but they have the plug on top too, so i have played around with adjusting them and i can get about ±10psi from the original setting without much trouble... [i could probably go higher or lower with them, but i haven't had to]



i've also got some other pressure switches that are 15 and 25, but they are preset and i haven't figured out how to adjust them [even with them apart???] but they are nicer looking and more compact than the hobbs i have [and they are NO/NC, while my hobbs are all NO]