The Zee Line oil control valve meters quarts in 1/4 quart increments. This multi purpose mechanical meter is designed for dispensing motor oil, gear lube, AFT and glycol. It is the tried and true meter for those needing a durable and long lasting piece of equipment. Max. PSI: 1,000, Temperature Capacity (deg F): 150, LCD Display: No, Flow (GPM): 4, Inlet Port (in.): 1/2, Outlet Port (in.): 1/2