Heater Hose shut off?

Funny, I usually don't check out this section of the forum. This past weekend the heater core in my daily driver blew. I took one of my heater hoses and looped it back to the engine and zip-tied the other one out of the way. The hose from the manifold went into a devise that blocks it off to help with cold starts, so it didn't go all the way to the heater core. A valve would look better, just be sure to block the one coming from the waterpump so you don't make the core handle too much pressure.