Do you actually know what kind of valve you installed? What is a gate valve disquised as a globe valve? Anyway, even though a globe valve is used to control flow, over time they won't turn off. Cavitation occurs and the rubber washer or the seat will be damaged. A plumber advise using a globe in order to make money changing washers and seats. A ball valve will last longer when used as a balancing valve or when controling flow. Back in the day, before ball valves and globes, gates were used on circuit setters. Ball valves are now used on circ. setters. The problem with using a gate is that the gate is a tapered wedge or shaped like a sideways "D" and it is loosely attached to the stem. When the gate is in the partially open position it can vibrate when lowering a high pressure fluid to a lower pressure. They are less prone to being damaged by cavitation, since there are no rubber seals in the flow path. By the way, there's no such thing as a gate check valve. A shut off valve would have been a better choice over a swing check valve. A check valve can "clatter" during low flow rates, damaging the mechanism.
