1-1/4 inch Female Adapter, Carbon Steel Water Press Fitting, Press x Female

Streamline® 1-1/4 inch Press x Female Carbon Steel Adapter – Engineered for Secure Press Transitions

The Streamline® 1-1/4 inch Carbon Steel Press x FNPT Adapter provides a dependable solution for transitioning between press-fit carbon steel systems and threaded connections. Designed for use in closed-loop hydronic, compressed air, and inert gas systems, this fitting delivers the strength and performance professionals demand in high-pressure and high-temperature environments.

Manufactured from ASTM A420 carbon steel and featuring zinc-nickel corrosion-resistant coating, the adapter is equipped with factory-installed EPDM sealing elements to ensure a tight, leak-free seal under system-rated working conditions. The press end is compatible with standard V-profile pressing tools, providing a flame-free installation method that improves safety and reduces labor time on-site.

Key Advantages

• ✅ Code-Compliant Sealing – Fitted with dual EPDM O-rings approved for potable water, HVAC, and compressed air systems
• ✅ Press x FNPT Configuration – Allows easy integration between press piping and NPT-threaded system components
• ✅ Robust Carbon Steel Body – Suitable for use in mechanical rooms, risers, and industrial facilities
• ✅ Reduced Downtime – Press connection eliminates the need for hot work permits or system drainage for repairs
• ✅ Third-Party Certified – Complies with ASME B31.1, B31.3, and IAPMO and NSF/ANSI 61 standards

Technical Specifications

• Size: 1-1/4” nominal
• Material: A420 Carbon Steel with zinc-nickel coating
• Connections: Press (V-profile) x Female NPT
• Seal Type: EPDM (black) for water and inert gases
• Pressure Rating: 200 psi (water); 125 psi (air/gas)
• Temperature Range: 0°F to 250°F

Application Areas

This female adapter is frequently used in commercial hydronic heating and chilled water systems, compressed air distribution, and mechanical piping networks where transitions from press piping to threaded valves, gauges, or equipment are required. The carbon steel construction makes it especially well-suited for industrial settings where durability and service life are critical.

Installation Guidance

Use calibrated press tools with approved V-style jaws. Ensure pipes are properly deburred and marked for insertion depth. The press connection should be made according to manufacturer specifications to maintain warranty and code compliance. No welding or threading is necessary, reducing total install time and eliminating fire hazards.

The Streamline® 1-1/4 inch Press x Female Adapter is built to support modern commercial and industrial plumbing systems with efficiency and durability. For applications where mechanical integrity and speed of installation are essential, this fitting delivers reliable performance and long-term service life.