new pump will not fit

I just bought a new 4" submersible pump and got everything set up - as I went to put it in the well it would not go down. I got it about 12 inches in and it got stuck. I almost couldnt get it out. It has a cast iron 4" pipe that looks as if rust is preventing the pump from going down the pipe. What would you suggest?

Are you replacing the pump or is it a new install in an old well.If you are replacing it, i would be a little lost as to why you couldn't get the new one in. Is it a torque arrestor getting stuck or the pump itself. If it's the torque arrestor, its expanded too much. If its just that one spot and the torque arrestor isn't your problem, i would try to knock some of the rust off the pipe, or dig down, cut the section out, and weld a new section on.

sammy

You said it is Cast Iron. Are you sure it isn't just plain Steel Pipe?
If it's Cast Iron, it's not a well.

If you just can't get it in, you might have to go with a 3" Submersible Pump.

bob...

cast iron or steel what ever the type of cassing is corroded with rust. I pulled out the old jet type and am trying to put in a submersible pump. the pump will not go down the pipe as if it is to big for the pipe. I guess the three in. pump might fit but hey it cost double the price of the 4in. The pump is aproxomatly 3.75 across and aproxamatly 36 inches long. it want even go all the way into the well there is still about 6 inches of the pump still sticking out. I could probebly go back to a jet type pump but what ever type I go with the one I have will not go down. as for cutting and welding new pipe is out of the question because the cassing is set in concrete. thanks for getting back to me guys,

If the 4" Pump won't go down, the two pipe jet may have the same problem.

Yes the 3" Pump is a lot more than the 4" Pump. I guess the reason is that only a few companies make them and they can get a better price for them. They also sell far fewer of them, so the mass production savings is not there either.

bob...

I got tired of waiting and screwing around with it. I took the pump back to the place where I bought it and got a jet pump to replace it. The jet type is what I pulled out of there. As you said the new injector would not go down the hole either. But I pulled one out of the hole so I thought it should go in. I just decided to take the old injector and put it in and it went in fine. it was 1/2 inch smaller. I got it all put together it is working and has good flow. Now my problem is the pressure switch or tank. when the pressure drops to 40 it kicks on like it is supposed to. when the pressure gets to 60 it kicks off and on in rapid secession. until the breaker kicks off the electricity. the pressure tank has 35 lbs. I believe I read somewhere a jet type pump does not need a check valve. I have a check valve between the pump and tank. Is this the problem?

When you get a pump the pressure switch is often mounted on the pump. If you put a check valve between the pump and the tank then the pressure switch at the pump doesn't measure the pressure in the tank.

The switch must be connected so the check valve doesn't prevent the switch from measuring the pressure in the tank.

If you don't want to re-mount the switch you can run a pressure sensing tube from the switch to the tank-side of the check valve and plug the port in the pump where the switch is connected to the pump.

If you put a Foot Valve on the bottom of the Jet, you can and should get rid of the Check Valve up top completely. Don't worry if it makes a difference or not, just get rid of it.

bob...

Thank you guys you have helped me clear up the problem.