Nozzles,nozzle,bulk nozzle,bulk nozzles Description:Automatic Shut-off for Heavy-Duty High-Flow Truck, Bus, and Home Fuel Oil Delivery. Right angle design, dual poppets, and 2-position hold open device. Venturi-type shut-off mechanism for automatic shutoff. Aluminum body lighter in weight and easier to maneuver than other nozzles on the market. Two-position hold-open device.