3/4 inch x 1/2 inch PEX Stainless Steel Reducing Insert Coupling PEX x PEX

3/4" x 1/2" PEX Stainless Steel Reducing Insert Coupling – Precision-Fit for Cross-Size Transitions

This 3/4" x 1/2" stainless steel reducing insert coupling is engineered for secure transition between differing PEX pipe diameters in pressurized plumbing systems. Its machined insert ends are designed to maintain proper compression inside the tubing, ensuring a consistent, leak-resistant connection when installed per ASTM F1807 or equivalent standards.

Application Value for System Design

Reducing couplings provide a practical solution when transitioning supply lines between fixture branches or equipment requiring different PEX sizes. This fitting is well-suited for installations involving size-specific flow control or pressure zoning and can be integrated into both new construction and retrofit configurations.

• Material: 304 or 316 stainless steel (verify by model) for maximum corrosion resistance in potable water and closed-loop systems.
• Size Transition: Reduces from 3/4" to 1/2" nominal PEX tubing dimensions.
• Connection Type: Designed for crimp or clamp installation using standard PEX tools and ASTM F1807/F2098 compliant fittings.
• Pressure & Temp Rating: Suitable for use up to 200 PSI and 200°F under typical operating conditions; verify ratings per local code.
• Low-Profile Body: Compact form factor allows installation in confined spaces without compromising system integrity.

Installation Notes

Ensure clean, square-cut PEX tubing with full seating over the insert ends. Position and secure crimp or clamp rings according to the manufacturer's specifications and applicable codes. Use of thread sealants is not applicable to insert fittings; system pressure integrity is dependent on correct mechanical installation.

Where Utilized

Commonly specified for potable water and radiant heat systems requiring transitions between main distribution and reduced-branch tubing sizes. Suitable for residential, multifamily, and light commercial systems employing home-run or trunk-and-branch layouts.

Technical Insight

Stainless steel fittings offer superior resistance to dezincification and electrochemical degradation, particularly in systems subject to aggressive water chemistry. Their robust construction ensures mechanical reliability across a wide temperature and pressure range.