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Old 06-05-2010, 03:26 PM
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hobbs switch question

I am putting together my own dual stage water/meth setup, I've got everything mocked up but the hobbs switches.... Having never worked with a hobbs switch, went to NAPA today and looked through the catalog they were NO or NC, I know I want the NO ones, they were rated at something like 2psi, 4psi, 15psi and 60psi.

My plan is to spray stage one at about 6-8psi and have the second kick in at about 24-26.

So which 2 switches do I need, are they adjustable??

Thanks!
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Old 06-05-2010, 05:55 PM
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bump bump....
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Old 06-05-2010, 07:32 PM
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beats me heres a bump
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Old 06-06-2010, 11:59 AM
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might want to go to another parts place or maybe a hydraulic shop and check out somewhere with more of a selection of pressure so you can get a hobbs with the exact psi you want to activate at. you want a no switch with a psi rating where you want each stage to turn on, i don't know if your running 1 pump for each stage or 1 shared pump, if that is the case you will need an electric operated valve for the second stage

might just be cheaper in the long run to get the cooling mist controller then you will have infinite adjustablility without having to buy different hobbs switches
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Old 06-06-2010, 12:09 PM
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thanks, Its 1 pump, I already have the water selinoids and relays all put together... Its all wired except the two hobbs switches, so I will keep looking for 'em.
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Old 06-06-2010, 12:17 PM
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Ahhhhh, thanks for mentioning coolingmist... they have the exactly what I want.
Coolingmist Water Injection, alcohol injection and Methanol Injection systems
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