Perko 0528 Unmarked Pipe Deck Fill, Cast Bronze, Key and O-Ring

Overview

The Perko 0528 is a cast bronze unmarked pipe deck fill for boats that need a clean deck fill fitting without a fuel, diesel, water, or waste label on the cap. It is used where the pipe size and deck opening need to match the vessel’s existing plumbing layout, with options covering 1 inch through 3 inch pipe sizes and flange outside diameters from 2-7/8 inches to 5-3/8 inches.

The range is available in plain bronze or chrome plated bronze, so it can suit either a traditional hardware layout or a brighter deck finish. The 1-1/4 inch and 1-1/2 inch caps have a slot between the holes, and the larger 2-1/2 inch and 3 inch deck plates use #10 screws while the other sizes use #8 screws.

Key features

• Cast bronze construction for use in marine deck hardware applications.
• Unmarked cap keeps the deck fill visually neutral when a labeled cap is not required.
• Plain bronze and chrome plated bronze finishes are available across the size range.
• Pipe size options cover 1 inch, 1-1/4 inches, 1-1/2 inches, 2 inches, 2-1/2 inches, and 3 inches.
• Flange outside diameters range from 2-7/8 inches to 5-3/8 inches to match different deck layouts.
• Deck plate key and O-ring are included for normal cap access and sealing.
• Sizes 9, 10, and 11 use four mounting holes for secure deck installation.

Variants

This product family varies by finish, pipe size, and flange outside diameter. The chrome plated bronze versions give the deck fill a bright hardware finish, while the plain bronze versions suit installations where exposed bronze is preferred or where the fitting will weather naturally over time.

The available pipe sizes run from 1 inch to 3 inches, with the flange diameter increasing as the pipe size increases. Match the selected version to the vessel’s pipe size first, then confirm that the flange outside diameter and mounting area fit the deck location.

Installation and fit

Before installation, check the pipe size, deck cutout, available flange space, and screw pattern against the existing deck layout. The flange should sit flat on the deck surface, with enough clear area around it for the fasteners and for the deck plate key to operate the cap without interference from rails, cleats, hatches, or nearby hardware.

Use marine bedding or sealant appropriate for the deck material and service area, and fasten the deck plate with the correct screw size for the selected version. The O-ring should be kept clean and seated correctly so the cap can seal as intended after routine opening and closing.

Use cases on board

This unmarked deck fill is a good fit for refits, replacement work, and custom installations where the boat owner wants a pipe deck fill without a molded or embossed service label. It works well in deck areas where the fill function is already known from the vessel layout or where a separate labeling system is used.

What’s included

• Deck plate key
• O-ring

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.