3/4" Cast Brass Stop and Waste Valve, Lead-Free, Copper x Copper

3/4" S-511 No Lead Stop & Waste Valve – Proven Performance for Potable Water Systems

The 3/4" S-511 No Lead Stop & Waste Valve is a trusted component in residential and commercial potable water applications, offering a combination of code compliance, rugged construction, and ease of service. Built with a full-pattern cast brass body and a sweat connection design, this valve is manufactured to meet the requirements of U.S. Public Law 111-380, making it fully compliant for no-lead installations.

Built for Reliable Isolation and Seasonal Drainage

Designed with integrated stop-and-waste functionality, the S-511 simplifies seasonal system shut-down and line drainage while maintaining reliable shut-off under working pressure. Whether servicing cold water lines or preparing systems for winterization, this valve delivers consistent performance where it's needed most.

Key Performance Features

• Lead-Free Certified – Complies with federal regulations for potable water system components.
• Full-Pattern Body – Provides a more robust design and improved flow compared to reduced-pattern alternatives.
• Stop-and-Waste Port – Facilitates controlled system drainage, ideal for seasonal maintenance or repairs.
• Cast Brass Construction – Electric-induction furnace cast for metallurgical consistency and strength.
• Pressure Rated to 125 PSI CWP – Performs reliably under normal system pressures.

Technical Specifications

• Nominal Size: 3/4 inch
• Connection Type: Sweat
• Pressure Rating: 125 PSI Cold Working Pressure (CWP)
• Seat Material: NBR (Buna-N)
• Body Material: Cast Brass
• Inlet to Outlet Length: 2.59 inches
• Height (Valve Open): 2.53 inches
• Country of Origin: Domestic

Installation Considerations

This valve is designed for professional use in copper piping systems. Proper installation requires sweating techniques and should be performed with attention to system depressurization and orientation of the waste port. Clearance should be provided to access the waste drain during service. Licensed plumbers are recommended to ensure full code compliance and safe operation.

Why It’s Trusted in the Field

• Stem Packing Design – Outperforms packless bonnets by delivering a reliable seal under pressure fluctuations.
• Integrated Drain Port – Allows for fast and controlled line emptying during shutdowns or repairs.
• Code-Compliant Build – Independently tested to meet NSF/ANSI 61 & 372 and applicable lead-free regulations.
• Rugged for Repeated Use – Ideal for high-turnover service connections and freeze-prone systems.

Engineered for Longevity and Compliance

The S-511 3/4" Stop & Waste Valve is a field-tested solution for professionals requiring dependable system shutoff with seasonal drainage capability. Built to last and designed for consistent performance, it is a go-to component in any lead-free compliant water system. Order with confidence—this valve delivers when it matters most.