An adaptive fitting for valves. The adaptive fitting has a fitting body having a first end and a second end. The fitting body defines an inner passageway extending from the first end of the fitting to the second end. The fitting is provided with a valve-engaging portion disposed on the first end of the fitting body. This valve-engaging portion has a threaded region for threadably engaging a threaded section of a valve. On the second end of the fitting body is disposed a sealing portion. The fitting is provided with one or more ports disposed about or near the first end of the fitting body for allowing flow there through.