1-1/4 inch Carbon Steel Press No Stop Coupling Press x Press

1-1/4 Inch Carbon Steel Press No Stop Coupling

The 1-1/4 inch Carbon Steel Press No Stop Coupling is engineered for press-fit installations requiring a continuous pipe run without internal stop obstruction. Commonly used in hydronic heating and cooling systems, this coupling supports mechanical connections in carbon steel piping where mid-run pipe insertion or repair is required. Its extended body and press x press configuration provide a dependable, flame-free solution for commercial and industrial applications.

Key Features

• ✅ No Internal Stop – Allows uninterrupted pipe engagement, ideal for cut-ins and inline extensions.
• ✅ Carbon Steel Construction – High-strength material offers excellent performance in high-pressure, closed-loop water systems.
• ✅ Press Technology – Compatible with standard press tools and jaws, enabling quick installation and system uptime.
• ✅ Sealing Element – EPDM O-ring ensures a reliable, watertight seal and leak-detection capability during pressure testing.

Applications

This coupling is designed for use in non-potable water systems such as HVAC piping, compressed air, glycol loops, and other mechanical applications. It is especially well-suited for use in mid-line pipe repairs or extensions where precise alignment and a continuous bore are required.

Installation Notes

Installation requires properly calibrated press equipment and compatible jaws. Mark insertion depth on the pipe prior to press. Ensure pipe ends are clean, deburred, and free of scale or oil to avoid O-ring displacement or seal failure. Because this coupling lacks a center stop, accurate pipe positioning is essential.

Specifications

• Size: 1-1/4 inch nominal
• Material: Carbon steel (typically zinc-coated for corrosion resistance)
• Ends: Press x Press, no internal stop
• Seal: Factory-installed EPDM O-ring
• Pressure Rating: Up to 200 PSI (system-dependent)
• Temperature Range: Up to 250°F (based on EPDM limits)
• Certifications: Compliant with applicable ASTM and NSF standards for mechanical press systems

Best Practices

Use mechanical restraints or supports to prevent axial movement in press systems. This coupling is not intended for applications subject to constant pipe stress, vibration, or thermal expansion without allowance for movement. It should not be used in potable water systems unless specifically rated for such use.

For mechanical contractors seeking dependable, press-fit carbon steel connections, the 1-1/4 inch Press No Stop Coupling offers a reliable solution that meets the demands of modern installation methods and performance standards.