Eff 104064-lf Brass Pex X Mpt Adapter 3/4 Inches Pex X 1/2 Inches Mpt

Product Description

The EFF 104064-lf is a brass adapter fitting designed to connect a 3/4 inch PEX tubing line to a 1/2 inch male pipe thread (MPT) fitting. This type of transition adapter is a staple in residential and commercial plumbing systems where PEX tubing meets threaded pipe connections. Plumbers and pipefitters rely on PEX-to-MPT adapters when transitioning between flexible PEX supply lines and threaded metal valves, fixtures, manifolds, or supply stops. The 104064-lf from EFF handles this transition cleanly and securely, making it a practical choice for new construction, remodels, and repair work alike. Brass construction gives this fitting excellent resistance to corrosion and dezincification, which is critical in potable water systems where long-term durability and material safety are required. Brass fittings are compatible with hot and cold water lines, making them suitable for use throughout a plumbing system. The 3/4 inch PEX end connects directly to standard PEX-A, PEX-B, or PEX-C tubing using the appropriate crimp ring or clamp tool, while the 1/2 inch MPT end threads into any standard female-threaded fitting, valve, or port. This size combination is commonly used when stepping down from a larger PEX distribution line to a smaller threaded outlet or valve connection. The lead-free designation indicated in the part number suffix makes this fitting compliant with safe drinking water standards, suitable for potable water installations in states and localities that require lead-free certified components. HVAC professionals, plumbers, and contractors working on hydronic heating systems, domestic water distribution, or in-wall rough-in plumbing will find this adapter useful across a wide range of applications.

• Connects 3/4 inch PEX tubing to 1/2 inch male pipe thread fittings
• Brass construction provides corrosion resistance and long-term durability in potable water systems
• Lead-free compliant for use in drinking water applications where required by code

Product Highlights

The EFF 104064-lf brass PEX-to-MPT adapter provides a reliable, code-compliant transition between 3/4 inch PEX tubing and 1/2 inch male pipe thread connections. Its solid brass construction makes it a dependable choice for potable water plumbing in both new construction and retrofit projects.

Product Information

Standard Information

• Brand: EFF
• Manufacturer Part Number: 104064-lf

Technical Specifications

• Fitting Type: Adapter
• Connection Type 1: PEX
• Connection Size 1: 3/4 inches
• Connection Type 2: MPT
• Connection Size 2: 1/2 inches
• Material Construction: Brass