3D Cutaway Sewage Tank Illustration

I need a moderately detailed, 3D cutaway illustration of a below-ground sewage pumping tank for an upmarket UK housing estate. The illustration should be in an isometric view.

Requirements:
- Visible components: pumping mechanism and piping system
- Perspective: isometric view
- Level of detail: moderately detailed, not basic or highly realistic

Ideal Skills:
- 3D modeling and illustration expertise
- Experience with isometric views
- Knowledge of sewage systems and their components