The well must be pulled. A couple methods to do this would be to make an oil derrick looking device out of 2x4's and lifting it with a come along, or do what I did and use a engine hoist positioned over the well. Either way, chances are it will be tough to pull because the leathers/seals at the bottom of the well catch on any rust that is inside the casing pipe (your actually lifting a smaller diameter pipe that sits inside a larger diameter casing pipe).
Once you finally get the well up, replacing the foot valve is as easy as unscrewing the old one and screwing on the new one. Even if your old leathers come out intact I highly recommend replacing them. Also make sure you inspect the other components before you drop anything back down into the well casing (you don't want to be doing this again..... do you?)
It will only work properly if you put it very close to the foot valve. In which case you may as well replace the foot valve - it's not difficult to do. If you put it at or near the pump, the pump will just suck air.
Are you sure you don't mean 'foot valve' - this is the valve at the bottom of a well suction pipe when you use a jetpump. I've never heard of 'foot trap'.
5 feet.
A shallow well jet pump sits on the ground next to the well. To install it, connect tubing to the intake side of the pump and put a foot valve on the end of the tubing to control the water. Lower the foot valve and tubing into the well. Remove the drain plug on the pump and pour water in it to prime it. Replace the drain plug, connect the pump to power and turn it on.
A foot valve is something that you eat with your foot
Unscrew the old one and replace it with a new one. You'll have to reprime the line and the pump again to fill the void of air that is now in the pipe from changing the foot valve.
The same size as the pipe it is hooked up to in the well.
A foot valve, in relation to a water well, is a check valve at he bottom of a well to keep the water from running back into the well from the pump when the pump is not running. If the check valve does not hold the water the pump will lose it's prime and will not pump water.
The foot valve in a well should be the same size as the down pipe, usually 1 inch, but could be as small as 3/4 or as large as 1 1/2 . Foot valves are made in all those sizes.
how do you replace the expansion valve
I have 1 1999 Dodge Neon Sport and the PCV valve is located on a hose that comes out of the Valve cover. The hose is very brittle (possibly due to heat) and can crack when you try to replace the PCV valve so be prepared to replace the hose, clamps, etc. as well.
It is normal to replace them.It is normal to replace them.