1 inch x 1 inch x 3/4 inch PEX Stainless Steel Reducing Insert Tee PEX x PEX x PEX

1 inch x 1 inch x 3/4 inch PEX Stainless Steel Reducing Insert Tee – Full-Size to Reduced Branch Transition

The 1 inch x 1 inch x 3/4 inch PEX stainless steel reducing insert tee is designed for use in pressure-rated potable water and hydronic systems where a reduced 3/4 inch branch line is required off a 1 inch main run. This fitting supports high-strength, corrosion-resistant connections in PEX distribution systems using standard mechanical joining methods.

Technical Specifications

• Material: 304 stainless steel for corrosion resistance and mechanical strength
• Connection Type: PEX insert barb x PEX insert barb x reduced PEX insert barb
• Nominal Sizes: 1 inch x 1 inch x 3/4 inch
• System Compatibility: Fits ASTM F1807 (crimp) and F2098 (clamp) connection systems
• Working Pressure: Rated to 200 PSI at 73°F; suitable for service temperatures up to 200°F
• Certifications: NSF/ANSI 61 and 372 certified for lead-free potable water systems

Applications

Commonly used in residential and light commercial plumbing systems, this reducing tee facilitates branching a 3/4 inch PEX line off a 1 inch trunk. It is suitable for water distribution systems, radiant heating manifolds, and looped supply configurations where branch reduction is required for fixture supply or zone balancing.

Installation Guidelines

Use with approved crimp or clamp rings and compatible PEX tools. Ensure clean, square tubing cuts and full insertion over the barbs before securing. No thread sealant or plumber’s tape is necessary, as the fitting relies on a mechanical seal. Conduct pressure testing post-installation as required by local code.

Performance Considerations

Stainless steel insert fittings are preferred in systems with aggressive water conditions or where brass fittings may be vulnerable to dezincification. Their dimensional stability and chemical resistance make them a reliable option for long-term system performance in both hot and cold water service.