0591 Vented Fill f/1-1/2″ Hose – Straight Neck – Chrome Chrome Plated Bronze Cap Black Polymer Body. Straight Neck & Heavy Duty Stainless Steel Bead Chain. Integral Tank Vent with Flame Arrestor and Anti Surge Valve (on diesel only). Deck Plate Key Not Required. *Note: Consider using the Mounting Ring (Fig. 0540DPRBLK) for all installations. DP package includes mounting ring. Technical Information For Hose Size: 1-1/2″. For Vent Hose: 5/8″. Mounting Hole Dia.: 2-1/8″. O.D. Flange: 3-3/8″. Neck Length: 2-7/16″. Screw Size: #8.