Dresser 1 2" Style 65 Galvanized Male Adapter Wal Rich Corporation Dresser sleeve Coupling (BOLTED SLEEVE COUPLING) Dresser coupling Bolted sleeve Couplings Style 38 dresser coupling for steel pipeDresser sleeve Coupling (BOLTED SLEEVE COUPLING) Qingdao Okval Galvanized Steel 1 in COMP x 1 in COMP Compression Coupling BK Products Dresser Couplings Vytl Controls Bolted Sleeve Type Couplings for Plain End Pipe OKVAL brand bolted sleeve couplings are used to join Plain End Pipe ,okval dresser coupling design has sleeves which slide over the pipe ends to which DRESSER PIPELINE SOLUTIONS 0065 0033 003 Style 65 Boltless Long Coupling, 1 1 4 in Nominal, Compression End Style, Malleable Iron Torrco