Originally Posted by CaDreamin
Well, I’m probably not explaning it very well and absent the ability to go under the van take some photographs I don’t know that I’ll be able to do much better.
The bumpers would weld to the frame rails and extend them towards the pavement at points near the plumbing where the frame rails are unobstructed.
You would be able to remove and replace the plumbing just as you normally would. It would not be enclosed in any way.
Considering the low ground clearance on the Chevy it could help and certainly couldn't hurt. I have a friend with a RT 190 who ran some rebar stuck up vertically into his plumbing while parking at a construction site. He broke up the dump valves and bent one of the pull rods. The correct replacement plumbing was not easy to find and it was aggravated by the fact that an adjacent tank had to be temporarily repositioned to provide sufficient clearance to remove the trashed assembly and install the replacement plumbing.
The protection you envisage would in all likelihood have prevented this debacle. But in a way, it's a bandage for a design that needs a couple of inches of additional ground clearance. Considering that these Chevys are only 8 ft 9 in high, a couple of inches of lift would hardly be visually noticeable or significantly influence driving characteristics.