Trip Moses
IMOL
I’ve used this one for 2 plus years. It doesn’t have a pressure switch. It runs tthe whole time the TM is running. It may have an internal switch, IDK. Works great.
Help me set up a 100-120 gallon fresh water tank and pump
- Thread starter BIG WOOD
- Start date
Living The Dream
Member
Matt is that an on demand pump?
That makes me feel better. That's the exact same as mineI’ve used this one for 2 plus years. It doesn’t have a pressure switch. It runs tthe whole time the TM is running. It may have an internal switch, IDK. Works great.
I don't know. What is an on demand pump?
Cleanworks
Moderator
That's a pump with a pressure switch
Living The Dream
Member
What cleanworks said. It only turns on and pumps water when water is being drawn. Just like a camper's pump only turns on and pumps when the faucet is open.
Lee Stockwell
FOJL
Demand pumps turn on and off with a pressure switch,usually attached to the pump.
Bypass pumps trickle a small stream back to the fresh tank and run continuously.
Bypass pumps trickle a small stream back to the fresh tank and run continuously.
Do I need to install a bypass hose to send the water back to the tank somehow? Because it seems I have a bypass pump. I hope there’s some type of switch I can install to make this setup a Demand pump.
Cleanworks
Moderator
I think that has a pressure switch. It's that little square thing on the end of the pump. The only to tell is to hook it up, put a spring loaded garden spray nozzle on the end and turn it on. When you spray, the pump should turn on. When you let go, the pump should turn off.
KevinD
Member
Not all bypass pumps go back to the tank.
I used internal bypass pumps for years.
KevinD
Member
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I used these for 20 years with the same tank.
Plumbed straight from the fresh water tank to the mix tank with no inline filter.
All I ever used was a inline filter screen on the garden hose when filling my tank.
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I used these for 20 years with the same tank.
Plumbed straight from the fresh water tank to the mix tank with no inline filter.
All I ever used was a inline filter screen on the garden hose when filling my tank.
Lee Stockwell
FOJL
Usually small portable machine centrifugal pumps.
Lee Stockwell
FOJL
Centrifugal pumps usually have a fan that spins in a housing with enough clearance to move water but not "lock down", thus not needing either bypass or shut off.
Automotive engine water pumps are a dependable example of a centrifugal pump.
Automotive engine water pumps are a dependable example of a centrifugal pump.
