Washing Machine Outlet Box with Center Drain 1/4 inch Turn Valves and 1/2 inch Hammer Arresters

1/4 Turn Supply Valve with Integrated Water Hammer Arresters – Built for Code-Compliant Control

The 1/4 Turn Supply Valve with integrated water hammer arresters is engineered for use in laundry and fixture supply applications requiring both shut-off functionality and hydraulic shock protection. This dual-purpose valve delivers precision control and system protection in a single compact unit, making it ideal for high-efficiency residential and multifamily plumbing systems.

Designed to comply with UPC and IPC plumbing codes, the valve combines robust material construction with convenient quarter-turn operation and integrated arresters certified to ASSE 1010 standards.

Key Product Advantages

• ✅ Quarter-Turn Shutoff – Full-port ball valve mechanism allows fast, 90° rotation for positive shutoff with minimal torque.
• ✅ Built-In Arresters – Factory-installed water hammer arresters reduce pressure shock, protecting pipe joints, appliances, and valves.
• ✅ Compact Profile – Designed to fit behind laundry boxes, within stud walls, or in other tight enclosures.
• ✅ Durable Assembly – Features forged brass body and nickel-plated components for resistance to corrosion and mechanical wear.
• ✅ Code Approved – Arresters certified to ASSE 1010 and valve assembly tested for potable water systems under ANSI/NSF 61/372.

Technical Specifications

• Inlet: 1/2" PEX (crimp or cold expansion connection)
• Outlet: 3/4" male hose thread (standard laundry connection)
• Body Material: Lead-free brass (complies with NSF/ANSI 372)
• Arresters: Dual-chamber piston-type, pre-charged with nitrogen
• Operation: Full-port quarter-turn ball valve
• Pressure Rating: 125 PSI working pressure
• Temperature Rating: Up to 180°F (82°C)

Installation Considerations

This valve is typically installed at the point-of-use behind appliances such as washing machines. It is compatible with copper, PEX, or CPVC piping systems depending on the inlet configuration. Use an approved crimp ring or cold-expansion sleeve system for PEX installations. Secure the valve in-wall using appropriate mounting brackets or boxes. Apply thread sealant to outlet connections as needed for leak prevention.

Common Applications

Frequently specified for laundry supply installations in single-family, multifamily, and mixed-use buildings. Also applicable for other fixtures where flow control and shock suppression are required, such as ice makers or dishwashers.

Note on System Protection

Water hammer is a leading cause of premature pipe joint failure in high-velocity systems. Integrated arresters eliminate the need for secondary inline shock absorbers, reducing install time and improving long-term system stability.

For plumbing systems requiring compact shutoff and integrated protection against hydraulic shock, this 1/4 Turn Valve with Hammer Arresters provides a professional-grade solution that meets the highest industry standards.