My 9 year old son helped me rebuild the Seaward 11 Gallon hot water tank.  It had sat in some dirty water at some time and the insulation was shot.  So we took it all apart, cleaned it up, rinsed is out and pressure tested it to see that the hot water ex-changer from the engine was sound and the tank didn't leak.  All was good there.  We bought a new pressure valve, Heating element (Should have taken a picture of it, looked like a coral reef with all the calcium deposits on it) and fittings for attaching the water.  The new thermostat and switch are in the mail to be attached later.

Old insulation is Yellow, new is pink.  We didn't take any before picture..oops.