3/4 inch Bronze Meter Coupling with Straight Tail Piece

313-134NL Lead-Free Meter Coupling – 3/4" Straight Tailpiece for Potable Water Systems

The 313-134NL is a 3/4" meter coupling designed for secure connections between water meters and copper or plastic distribution piping. Constructed from lead-free brass, this fitting supports potable water applications and complies with current low-lead regulations under the Safe Drinking Water Act (SDWA).

Its straight tailpiece design allows for streamlined meter installations or replacements, providing a consistent mechanical seal when paired with the included washer and female threaded meter body. This coupling is compatible with standard meter threads and is engineered for reliable performance under system operating pressures.

Key Technical Features

• ✅ Material: Lead-free brass (compliant with NSF/ANSI 61 and NSF 372)
• ✅ Threaded Connections: Meter swivel nut x 3/4" male straight tailpiece
• ✅ Seal Integrity: Includes EPDM or fiber washer to ensure a watertight joint with standard meter inlets
• ✅ Corrosion Resistance: Brass body offers excellent resistance to dezincification and internal corrosion

Specifications

• Model: 313-134NL
• Size: 3/4 inch
• End Type: Meter nut x Straight tailpiece
• Application: Water meter-to-service line connections in residential water systems
• Compliance: Certified lead-free per federal and state potable water codes

Installation Notes

Install the coupling by hand-tightening the meter nut onto the threaded meter port with the included washer in place. Use thread sealant on the tailpiece end where connecting to downstream copper or plastic piping. Avoid over-tightening to prevent washer deformation or meter damage. Proper support of the meter body and service line is critical to maintaining alignment and minimizing stress on joints.

Common Use Cases

Frequently used in municipal and residential meter settings, this fitting provides a dependable connection between the meter and the building supply line. It is suitable for both initial meter setups and replacements during system upgrades or maintenance work.

Code Compliance Note

This fitting meets lead-free requirements under U.S. Public Law 111-380 and is certified by NSF for use in potable water applications. It is approved for use in jurisdictions requiring ANSI/NSF 61 and 372 certified components.

The 313-134NL Meter Coupling delivers a dependable, code-approved solution for potable water meter installations. Its lead-free composition and robust construction ensure compatibility with modern water system standards and long-term reliability in field applications.