Here my choice. I have designed an isotype through some pipes subtly treated with simple shapes and abstract. If you have comments, please let me know. Greetings.
This is getting closer......Id prefer plumbing in white and for the ips--using red white and blue either melted into the colors like the first logo or separately colored letters--maybe "morphing" the underline from red to blue--also for printing the slogan needs to be red white or blue