Stonewall Drilling installs a constant pressure system (SQE) and a standard pressure system (SQ).  Both of these systems have a submersible pump and pressure system by Grundfos.  (Please see the Grundfos link below for further details regarding these 2 systems).  All fittings & connections we install for either of these systems are either brass or stainless steel.  We do NOT use nylon, plastic, etc.  Our water line is CSA approved think wall 100 lb test with all below ground connections double clamped with 100% stainless steel.  Wiring is completed to code from in the well through to the control unit and ready for hook up to your electrical panel.