[Funky_Fish14]

Threaded bulkheads are the perfect place start. And using a threaded adapter (MTxSoc, male thread x socket) like mark said, to tie into the bulkhead. Right after the adapter, connect a union (not a coupler, a union you can unscrew and disconnect). The union will allow you to disconnect the main plumbing from the thread so you can unscrew the adapter from the bulkhead, and still take the bulkhead off if necessary without having to cut anything. The same thing goes for the pump, a threaded connection attached as close as you can to the pump output, followed by a union, this will allow you do disconnect the pump from all the plumbing. A valve can be installed anywhere you want in the line, some people prefer closer to the tank, others closer to the sump. Some(like me), though most people say its overkill, will install 2 valves, one near the tank to remove all the plumbing if necessary without draining the tank, and one near the pump to leave the water in the line and still take out the pump. I also put a union between the valves so I can take either end off if necessary and still shut off the flow.

Keep in mind the power failure situation that TrailFish mentioned.

Hope that helps,

Cheers,

Chris