Earl,
This is my reasoning:
Mainly the clear hose is for my benefit. I want to be able to tell at a glance if my blowdown/WWF system is working properly or to tell if I have a frozen hose. I’ve already determined the freeze issue. It was the length of the coiled hose.
Also, I’ve had the Clear Polyurethane coiled hoses in each bay for 4 years now without any issues. They have held up extremely well. As an added benefit, the customer can see the foam in the hose and its neat to watch it switch colors!
Some other determining factors for staying with this type hose: Polyurethane hose is 5-10 times more durable/wear resistant, is cold weather resistant, stays flexible in cold weather (temp rating -40°F to +160° F), it is kink resistant, chemical resistant, and is lighter and stronger than rubber hose.
It has to work!