Oatey oat-38540 Washing Machine Outlet Box Hammer Arrestor

Product Description

The OATEY oat-38540 is a recessed washing machine outlet box designed for installations where supply valves and a waste drain must be set into the wall. Part of the Quadtro series, this box includes 1/4-turn supply valves and an integrated water hammer arrestor. The hammer arrestor absorbs pressure shock on supply lines that serve quick-closing valves, protecting pipes from surge damage. The box body is constructed from polystyrene and measures 8.75 inches wide by 7.5 inches high by 3.625 inches deep. Licensed plumbers install this box in both residential and commercial construction and remodel projects.

The oat-38540 fits commercial and residential applications where a clean, recessed installation is required for a washing machine hookup. The recessed design keeps supply valves and the drain connection inside the wall cavity, reducing exposure and saving floor space. The included water hammer arrestors address code requirements on supply lines connected to quick-closing valves, making this unit appropriate for new construction and retrofit work.

Key Features

• Integrated water hammer arrestors absorb pressure shock on quick-closing valve supply lines
• 1/4-turn supply valves for fast, reliable shutoff
• Recessed wall-mount design keeps valves and drain within the wall cavity
• Polystyrene construction for durability in damp laundry environments
• Suitable for both residential and commercial installations

Compatibility

Designed as an OEM-style recessed outlet box for residential and commercial washing machine supply and drain connections requiring in-wall valve and drain recessing.

Installation Notes

Installation is performed by a licensed plumber. Shut off the main water supply and relieve line pressure before beginning work. Rough-in dimensions should be confirmed against the framing opening before securing the box to wall studs. Observe applicable plumbing code requirements, including IPC provisions for water hammer arrestors on quick-closing valve supply lines.

Technical Specifications

• Width: 8.75 inches
• Height: 7.5 inches
• Depth: 3.625 inches
• Material: Polystyrene
• Valve Type: 1/4 Turn
• Application: Washing Machine Supply and Drain
• Use Environment: Residential and Commercial

Standard Information

• Brand: OATEY
• Manufacturer Part Number: oat-38540