Something I've done, and watched done many times in prototypes etc. is to "stretch" (permanently deform)a compression spring a bit to increase it's load at a specific deflection. My question is -- what effect does this have on other spring characteristics, particularly life? Would it actually be...
I'm looking for converion factors or approximations that will allow me to convert between Cv, Normalized liters/min and any other units used to specify flow through a valve
