The gauge reads bottle pressure when open or closed. This bottle is less than 1 month old. This bottle is perfect. The bottle has never been used or filled.
20LB Nitrous Bottle W/high flow valve, gauge and 8an blow off fitting w cap NEW
10LB Nitrous Oxide Bottle With High Flow Valve NEW 10LB nitrous bottle nos new!
1.25LB Nitrous Oxide Bottle with High Flow Valve NEW Motorcycle Nitrous bottle
NEW High Flow Nitrous Bottle Valve fits 5LB, 10LB, 15LB & 20LB Bottles
Nitrous bottle heater 12 volt nitrous heat pad fits 10LB, 15LB and 20LB
