We are trying to install a system to pump coolant to all our machines from one central tank of mixed cnc coolant. We used to have a basic cheapo sprinkler pump that would draw coolant from the tank and push it out through a long garden hose that we would drag over to each machine to top it off every day.
Now that we just moved to a bigger shop, we ran ran PEX hoses along the airlines going to each machine so we can run coolant directly to them. Everything is done now but the last part I am stumped on is how to setup the pump that will supply all this. I don't know very much about pumps / plumbing. We bought a 3 HP Dayton turbine pump that will supply about 30 GPM at 60 PSI. The goal is to have it kick on when someone opens a coolant tap down stream, and then turn off when the tap is closed. A basic pressure switch should handle that. The problem is that based on the little I know about home well pump installations, you have to have some sort of pressure tank attached to the pump to keep it from short cycling. Unfortunately, the type of pressure tanks they sell at home depot use butyl rubber bladders, and according to the internet, butyl rubber has very poor resistance to mineral oil, which is the primary ingredient in our CNC coolant.
What would you do in this case? I'm out of ideas and the only companies experienced with pumps in our area only know how to pump water (I spent 2 weeks trying to find one who could sort this ). To recap, the goal is to use a pump to draw coolant from a holding tank and pump it to machines downstream. The pump needs to turn on when someone opens a fill valve on a machine, and shut off when they close the valve. Any suggestions from anyone who has any experience with this would be greatly appreciated!!!
Now that we just moved to a bigger shop, we ran ran PEX hoses along the airlines going to each machine so we can run coolant directly to them. Everything is done now but the last part I am stumped on is how to setup the pump that will supply all this. I don't know very much about pumps / plumbing. We bought a 3 HP Dayton turbine pump that will supply about 30 GPM at 60 PSI. The goal is to have it kick on when someone opens a coolant tap down stream, and then turn off when the tap is closed. A basic pressure switch should handle that. The problem is that based on the little I know about home well pump installations, you have to have some sort of pressure tank attached to the pump to keep it from short cycling. Unfortunately, the type of pressure tanks they sell at home depot use butyl rubber bladders, and according to the internet, butyl rubber has very poor resistance to mineral oil, which is the primary ingredient in our CNC coolant.
What would you do in this case? I'm out of ideas and the only companies experienced with pumps in our area only know how to pump water (I spent 2 weeks trying to find one who could sort this ). To recap, the goal is to use a pump to draw coolant from a holding tank and pump it to machines downstream. The pump needs to turn on when someone opens a fill valve on a machine, and shut off when they close the valve. Any suggestions from anyone who has any experience with this would be greatly appreciated!!!