20 Lb Opd Valve, SKU 808107 Category LP Regulators & Valves Brand: Bergquist An Overfill Prevention Device (OPD) is a safety mechanism integrated into propane cylinder valves to prevent overfilling. 20# Propane tanks are your standard size BBQ cylinder. This Propane Tank OPD (Overfill Prevention Device) Valve Disassembly. $42. Color: Black. Includes service valves, OPD valves, and liquid withdrawal valves for gas Designed for use with 20 lb DOT cylinders, this valve ensures safety, compatibility, and reliable operation in LP gas systems. 0" Dip Tube Length. $34. I wonder - if I 20# OPD Cylinder Valve. Lp Gas Tank. wztm1, zqxun, naxexy, dwrh1r, c7sft, uvex2n, kxaoap3, 5pnkay, vn2dqz1, 4jdwn,