Overfill Protection Devices for propane tanks now the law

All propane tanks must have OPD valves or they will not be refilled

WORTHINGTON PROPANE TANK, 4.7 GAL, 20 LBS, 17.8 X 12.3 IN - Gas Cylinders & Canisters - WOR296954

How to know if your propane tank is overfilled - Quora

Propane safety made simple – Part 1 - RV Travel

Flame King 5LB Empty Propane Tank LP Cylinder with OPD Valve for Camping and Portable Appliances & Reviews - Wayfair Canada

Flame King 30 lb propane tank is safety tested, constructed from high grade steel and powder coated for durability with premium OPD valve. Propane

Flame King 30 Pound Steel Propane Tank Cylinder with Type 1 Overflow Protection Device Valve | Flame King Propane Tank Gauge Level Indicator

Propane Tank, 4# (~1gal)

What do you do if your propane tank is overfilled? - Quora

Propane Tank Primer - Forest River Forums

How to safely and quickly empty old 1lb propane tank : r/CampingGear

New Lot of 50 Propane Tank OPD Valves Overfill Protection Device