Page 41 - CNG/ LNG ESP Participant Guide 2024

Module 5: CNG Fueling Station Safety Systems and Fueling Practices

Fire Extinguishers

Quarter-Turn Shut-
Off Valves ▪ Used to shut off gas flow to the hose in the unlikely
event of a gas leak
▪ Will not shut off the flow of CNG to the entire
dispenser, only to the hose located on the same side
of the dispenser

Quarter-turn shut-off valve

Breakaway Hoses

Vent hose
breakaway

Fill hose
breakaway

▪ Stops the flow of high-pressure natural gas in the event a vehicle drives away with the
nozzle still connected to the receptacle

NGV Essentials and Safety Practices (CNG & LNG) © 2024 AFVi All Rights Reserved Page 5-4