Pressure-Sensitive Nozzle is designed specially for self-service prepay or card-lock system to help prevent gasoline spills. A2101-11B Automatic Pressure-Sensitive Nozzle 1) Designed specially for self-service prepay or card-lock system to help prevent gasoline spills.2) Cannot be opened until the pumping system is pressurized and closes automatically when the pressure is removed.3) Closed when placed back in the dispenser storage position.4) Materials:    a) Body: aluminum    b) Seals: buna-N, viton    c) Main stem seals: viton cased oil seal, graphite with teflon    d) Main stem: stainless steel5) Weight: 1.25kg/pc 6) Ordering specifications:    a) A2101-11B:        i) Inlet size: NPT3/4" / BSP3/4"        ii) Outlet diameter: 15/16"        iii) Flow rate: 0-60L/m (15/16")    b) A2101-11BP:        i) Inlet size: NPT3/4" / BSP3/4"        ii) Outlet diameter: 13/16"        iii) Flow rate: 0-45L/m (13/15") 7) Working pressure: 0.18MPa8) Accurate flow control allows customers to top off their tank to the exact amount they want, and it's easy to stop gasoline flow precisely.9) Easily replaced spout simply removes the screw.10) Spout kits available.11) Low profile aluminum body: light weight, easier to handle, provides an attractive, image enhancing appearance.12) Hold-open rack available for full service applications.13) One-hand control gives easy setting to flow rate for customer's  convenience.14) Exclusive pressure detecting module: the main valve can keep  closed, even when held without enough pressure in hose.15) Full hand insulator protects both nozzle and vehicle, and insulates users' hands.16) Available colors: color chart on inside back cover.17) Selective splash guard.18) 100% factory tested.19) Warnings: Using foreign objects to hold open automatic nozzles could result in failure to shut-off and personal injury.