Perko 0528 Gas Deck Fill for Pipe, Cast Bronze, Key and O-Ring Included

Overview

The Perko 0528 is a cast bronze gas deck fill for pipe-style fuel fill installations on boats. It gives the fuel fill point a finished deck opening with a marked gas cap, a sealing O-ring, and a deck plate key for access during fueling or service.

This range covers 1-1/2 inch and 2 inch pipe sizes, with flange outside diameters of 3-5/8 inches or 4-1/4 inches depending on the selected configuration. Finishes include chrome plated bronze for exposed deck areas where appearance matters and plain bronze for installations where a traditional bronze finish is preferred.

These gas fills meet U.S.C.G. safety requirements for gasoline fuel systems under 33 CFR 183, based on the January 31, 1977 standard, but they are not for applications that require 40 CFR 1060 subpart B emissions compliance.

Key features

• Cast bronze construction with plain bronze and chrome plated bronze finish options.
• Gas fill configuration for pipe-style marine fuel fill installations.
• Available for 1-1/2 inch and 2 inch pipe sizes to match common deck fill layouts.
• 3-5/8 inch or 4-1/4 inch outside flange diameter, depending on the selected pipe size.
• Includes a deck plate key and O-ring for cap access and sealing.
• 1-1/2 inch caps have a slot between the key holes for easier identification and operation.
• Uses #8 mounting screws for these listed configurations.

Variants

The product is offered in multiple gas fill configurations so the deck fill can be matched to the pipe size, flange diameter, and visible finish needed on board.

The finish, pipe size, and outside flange diameter vary by variant. The cast bronze body, gas fill function, included deck plate key, included O-ring, and #8 screw size remain consistent across these listed configurations.

• 0528DPGCHR: Chrome plated bronze finish, 1-1/2 inch pipe size, 3-5/8 inch outside flange. The chrome finish suits exposed deck areas where the fill will sit near other polished or plated hardware.
• 0528G09CHR: Chrome plated bronze finish, 2 inch pipe size, 4-1/4 inch outside flange. The larger pipe and flange size fit installations that need the 2 inch deck fill layout.
• 0528G08PLB: Plain bronze finish, 1-1/2 inch pipe size, 3-5/8 inch outside flange. The plain bronze finish fits boats where matching traditional bronze deck hardware is the priority.

Installation and fit

Before ordering, match the pipe size to the vessel’s existing fuel fill pipe and check the available deck space against the listed flange outside diameter. The flange needs a flat mounting surface with enough clearance for the cap, key access, fasteners, bedding compound, and the fill pipe below the deck.

For replacement work, compare the existing deck fill opening, screw pattern, and pipe connection before removing the old fitting. On new installations, the fill should be positioned where the fuel hose or pipe can run cleanly to the tank without tight bends, strain, or interference with structural members.

Use cases on board

This gas fill is a practical match for refits, restorations, and new pipe-style fuel fill installations on gasoline-powered boats. It is especially relevant where a bronze body is required and the owner wants either a chrome plated deck appearance or a plain bronze finish to match the surrounding hardware.

What’s included

• Gas deck fill
• Deck plate key
• O-ring