Hook Together 2 Single stage 60 gallon compressors or One 2 stage 60gal compressor?

[kenmac]

And that is about the minimum (in my opinion) if you do any amount of blasting at all.

That same compressor is around $2000.00 today. It's 25.5 cfm's @ 100 psi. Does a good job @ sand blasting

 

[SPYDERLK]

That same compressor is around $2000.00 today. It's 25.5 cfm's @ 100 psi. Does a good job @ sand blasting

About 7 horse, is it?
larry

 

[boggen]

pressure switch, is what ya talking about. that kicks on/off the pump when air pressure gets to low / to high.

i would imagine, if you double checked amps ((starting amps)) NOT running amps. and then obtained a "pressure switch" that was able to handle that many amps. you could wire both pumps up to same pressure switch.

that or perhaps a couple relay switches. that would kick on the pumps when pressure switched turn on and off. though if you could add some sort of delay so both pumps would not kick on at same time. but say 2nd pump kicked on a minute or so latter. you would most likely be better off.

as far as duty cycle. ((running constantly non stop)) you need to be very careful on shop air compressors. they will heat up to point of breaking. if you see some sort of cooling fan blowing across the motor, you will more than likely start seeing longer duty cycles if not contentious running.

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regulator is what controls amount of pressure. example tank has 120 psi. but the tool you are using you only want a constant 60psi, the regulator makes this happen.

 

[kenmac]

About 7 horse, is it?
larry

Yep, 7.5 this is it

 

[mbrule]

Yep, 7.5 this is it

Great unit, I have the same one at my house. It works great, but not as good as the 3 phase 80 gallon (don't know HP) one at the shop that I rent now! I was blasting yesterday and my nozzle is worn more than I could ever let it get at the house and the pump still cycles!

 

[SPYDERLK]

Yep, 7.5 this is it

Great unit, I have the same one at my house. It works great, but not as good as the 3 phase 80 gallon (don't know HP) one at the shop that I rent now! I was blasting yesterday and my nozzle is worn more than I could ever let it get at the house and the pump still cycles!

HP rules. My 5HP Kellogg American does 20CFM [measured] and holds at about 80psi when blasting. 25 CFM from 7.5hp is a little low and probably means the compressor is employed conservatively or else is small for the motor and not using all of its power. Your compressor at work is probably optimized at 7.5HP [28-30 cfm] -- or is a bigger unit all together.
larry