This Flame King OPD (overfill prevention) valve retrofits 20-pound propane tanks used in RV cooking and heating systems. The valve prevents dangerous overfilling during tank charging whilst meeting propane industry safety standards. Installation involves threading the valve assembly onto the tank’s filling port, requiring no specialized tools or expertise.

• OPD valve type
• Fits 20-pound tanks
• Overfill prevention function
• Safety-certified design
• Easy threaded installation