Perko Ball Valve Seacock, Cast Bronze, 90° Curved Hose Adapter

Overview

The Perko 0834 is a cast bronze seacock with a ball valve body, a 90° curved hose adapter, and a thru-hull fitting for marine plumbing installations.

This assembly gives the boat a serviceable shutoff point at the hull penetration, which is important for raw water intakes, drains, and other below-waterline plumbing runs where access, corrosion resistance, and positive valve operation matter. The range covers matching hose and pipe sizes from 3/4 inch to 3 inches, with overall heights from 5-7/8 inches to 14-3/8 inches depending on size.

The curved hose adapter helps route hose away from the seacock without needing a separate 90° fitting in many layouts. A polymer ball and seat support smooth valve movement and a tight shutoff, while the removable handle and drain plug make seasonal service and winterizing more practical.

Key features

• Cast bronze construction for marine thru-hull plumbing applications.
• Ball valve design with a polymer ball and seat for smooth operation and a tight shutoff.
• 90° curved hose adapter helps manage hose routing in bilge, engine room, and under-sole spaces.
• Includes a thru-hull fitting, hose adapter, drain plug, four pre-drilled mounting holes, and bonding screw.
• Drain plug supports winterizing and service without removing the full assembly.
• Removable handle helps when access is tight or service clearance is limited.
• Available in pipe and hose sizes from 3/4 inch through 3 inches for common onboard plumbing runs.

Variants

This Perko seacock range varies by hose size, pipe size, and overall height. The hose and pipe sizes match on each configuration, so selection is mainly about matching the existing thru-hull and hose run on the boat.

As size increases, the overall height also increases, from 5-7/8 inches on the 3/4 inch version to 14-3/8 inches on the 3 inch version. Flange diameter and bolt size also change across the range, so the mounting area and service access should be checked before replacement or new installation.

Installation and setup

For replacement work, match the hose size, pipe size, flange footprint, bolt size, and available height before removing the existing fitting. The overall height is measured from the top of the hose adapter to the bottom of the flange, which helps confirm clearance under floors, near stringers, or beside machinery.

The bonding screw gives a connection point for the vessel bonding system where bonding is part of the boat’s plumbing and corrosion-control layout. Installation should follow accepted marine plumbing practice, with proper bedding, backing support, hose clamps, and access for routine valve exercise.

Use cases on board

This seacock is a practical match for boats that need a bronze shutoff assembly at a thru-hull connection, especially where a 90° hose takeoff helps keep the hose run cleaner and less strained. It fits common service areas such as bilges, engine rooms, heads, baitwell systems, washdown intakes, and other plumbing locations where the valve must remain reachable.

What’s included

• Thru-hull fitting
• 90° curved hose adapter
• Drain plug
• Four pre-drilled mounting holes
• Bonding screw