3/4 inch x 1 inch PEX Brass Reducing Insert Adapter Crimp x Male

VIEGA BRS PEX Adapter – 3/4 inch Crimp x 1 inch MPT for Transition Applications

The VIEGA BRS PEX Adapter 3/4 inch x 1 inch Crimp x MPT is a lead-free brass fitting designed to transition between PEX tubing and threaded pipe systems. Manufactured to industry standards, this adapter provides mechanical reliability in potable water distribution, hydronic heating systems, and mixed-material installations.

Constructed from dezincification-resistant (DZR) lead-free brass, the fitting meets applicable U.S. Safe Drinking Water Act requirements and complies with NSF/ANSI standards for potable water use. It is suitable for both new construction and retrofit work where secure, leak-resistant transitions are necessary.

Application Benefits

• ✅ Crimp PEX Connection – Compatible with ASTM F1807 or F2159 PEX crimp systems using standard copper crimp rings or stainless clamp rings.
• ✅ Threaded Brass Transition – Male Pipe Thread (MPT) end allows for integration into copper, brass, or galvanized threaded fittings.
• ✅ Lead-Free Material – Certified to NSF/ANSI 61 and 372 for use in potable water lines.
• ✅ Compact Profile – Ideal for installations in confined areas behind walls or under fixtures.

Technical Specifications

• Connection Type: 3/4 inch PEX Crimp x 1 inch Male Pipe Thread
• Material: Lead-Free Brass (DZR)
• Standards: Complies with ASTM F1807 and NSF/ANSI 61 & 372
• Pressure Rating: Up to 200 PSI @ 73°F when installed per code

Installation Guidance

Installation requires a calibrated crimping tool appropriate for ASTM F1807 brass fittings and a go/no-go gauge for validation. Threaded connections must be sealed using PTFE tape or thread compound in accordance with local plumbing codes. Avoid overtightening to protect thread integrity.

Use Cases

This adapter is typically used in systems where PEX tubing transitions to threaded fixtures, valves, or system components. Commonly installed in residential potable water supply systems, manifold branches, and hybrid piping configurations.

Regulatory Note

All fittings for use in drinking water systems must be certified lead-free per the Reduction of Lead in Drinking Water Act. This fitting satisfies those requirements when installed as part of an approved crimp system.

Additional Characteristics

• ✅ Forged Brass Body – Provides mechanical strength and dimensional consistency under repeated pressure cycles.
• ✅ Corrosion-Resistant Finish – Suitable for buried, enclosed, or exposed locations with proper sealing and support.