Step 4 · Prepare the New Pump and Discharge Pipe
Take the new sump pump out of its box. The new pump will have a threaded discharge port. Wrap the threads of the new male-threaded PVC adapter with 3-4 layers of Teflon tape in a clockwise direction. Screw this adapter tightly into the pump's discharge port and give it a final tightening with a pair of channel-lock pliers or a pipe wrench. Now, prepare the PVC discharge pipe. You will likely reuse the existing pipe, but you must install a new check valve. Cut the old check valve off the pipe if necessary using a hacksaw. Clean the pipe ends. If you are using solvent-weld fittings, apply PVC primer and then PVC cement to the pipe and the new check valve fitting, and press them together firmly. Ensure the arrow on the check valve points UP, away from the pump. Attach the prepared pipe to the adapter on the pump.