Oatey 37550 Washing Machine Outlet Box 3/4 in Sweat

Product Description

The OATEY 37550 is a PVC washing machine outlet box designed to recess supply valves and a waste drain connection into the wall, providing a clean, code-ready rough-in for residential or commercial laundry installations. The assembly includes two supply valves with 3/4-inch male sweat inlets and a water hammer arrestor to suppress pressure surges when valves close. Valves use a two-piece design with a stainless steel retention clip, allowing field replacement without removing the box. The box includes interlocking wing flanges and side brackets, and a knockout cap for DWV pressure testing before closing the wall.

This outlet box is suited for residential and commercial applications where supply valves and a drain connection must be recessed in the wall behind a washing machine. The single-box configuration accommodates installation on a single stud or between two studs using the included side brackets, requiring no additional components for a between-stud install. Plumbers working on new construction or remodel laundry rooms will find the wing flange system straightforward to position and secure.

Key Features

• PVC body with solvent-welded joints prepared per ASTM D2855 for PVC drainage systems, no specialty cement required
• 3/4-inch male sweat inlet connections for copper supply lines
• Integrated water hammer arrestor reduces pressure surge when valves close
• Two-piece valve design with stainless steel retention clip allows field valve replacement
• Interlocking wing flanges and included side brackets support single-stud or between-stud mounting
• Knockout cap included for DWV testing before wall closure

Compatibility

Designed for residential and commercial washing machine installations requiring recessed supply valves and drain connection with 3/4-inch sweat connections. Valves are installed in an inverted configuration as part of the OATEY Moda washing machine outlet box system.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off the main water supply and depressurize the supply lines before making sweat connections to the valve inlets. Solvent-welded PVC joints at the drain connection must be prepared per ASTM D2855 using standard PVC cement compatible with the drainage system. Use the included knockout cap to perform DWV pressure testing before closing and finishing the wall.

Technical Specifications

• Application: Washing Machine
• Product Type: Washing Machine Outlet Box
• Inlet Type: Male Sweat
• Inlet Size: 3/4 inches
• Body Material: PVC
• Includes: Water Hammer Arrestor, Side Brackets, Knockout Cap
• Valve Retention: Stainless Steel Clip
• Drain Joint Standard: ASTM D2855
• Configuration: Single Box

Standard Information

• Brand: OATEY
• Manufacturer Part Number: 37550