1" Black Automatic HS Fuel Nozzle with FlowlockFor Heavy-Duty, High-Flow Truck, Bus and Fleet ServiceIf you operate a full-service truckstop, refuel your own fleet or manage a cardlock refueling location, the low cost, long life and durability of the OPW 7H high flow nozzle can help increase your productivity, sales and profits. Features & Benefits Spout retaining ring - adds extra measure in securing nozzle spout in fill pipe. Helps reduce spills - a unique two-stage lever design assures a positive shut-off, even if held wide open. Design Working Pressure - OPW products are designed to work at 50 PSI maximum pressure. Three-position hold-open device - one-finger control of hold-open mechanism means easy setting of flow rate. Easily replaced spout - simply remove three screws. Replacement kits are readily available from OPW. Dash-pot action - for smoother closing action and reduced line shock. Dual poppets - easy to open nozzle against high pressure. FlowLock™ - designed to shut-off automatically when the spout is tipped up, limiting spillage. Low reliable shut-off - specially designed to ensure proper shut-off as low as 5 gallons per minute. Even, smooth spray pattern - minimizes diesel foaming and false shut-offs. Listed by Underwriters Laboratories, Inc. - UL Listed.