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TAG: Overfill Protection Device

This is a 20-pound cylinder with an OPD valve and face seal that is in good condition. Photo courtesy of the Propane Education & Research Council.

2020 NFPA 58 requires face seal inspection

December 23, 2019 By

Photo: tttuna/E+/Getty Images

OPD connectors offer productive filling

August 10, 2011 By