Just keep spares, seems simple enough.
You guys are totally missing the point
So all you guys have everything you need all the time? I sure don't. You guys fix everything the right way all the time, even if there is a way to get by? If I can improvise on site without affecting quality of wash I will if need be. Do you guys ever repair poly tubing breaks with unions?
I have probably 10K in spare parts sitting on the shelf at my main wash. I have a $3000.00 hose crimper, dies, and several hundred feet of HP hose in various diameters. There's probably close to twenty different hoses HP hoses on my machine, and I've got four locations. So yes, I guess If I stock around eighty spare HP hoses at various locations I could avoid the downtime.
If it's 5pm on a Friday and a random hose breaks and I don't have the proper replacement I can do this in ten minutes to get me by until I go make one and replace on a return trip. Option 2 is make a special trip and spend two hours plus driving and time to make and change the proper hose. I'm taking option 1.