Sioux Chief 646-PG3 Pvc X Mip Straight Adapter 3/4 Inch

Product Description

The SIOUX CHIEF 646-PG3 is a 3/4-inch Metalhead straight adapter designed to transition from a PVC service line to a male iron pipe thread (MNPT) connection. It bridges PVC irrigation or service piping to threaded supply systems including CPVC, copper, and PEX. The fitting is lead free, making it suitable for potable water applications. Its compact profile fits standard residential and light commercial plumbing layouts, and the threaded male end mates directly with common pipe fittings and shutoff valves. Licensed plumbers and irrigation technicians are the primary installers of this type of adapter.

This adapter is commonly used where a PVC underground or in-wall service line meets an above-ground supply system. Typical applications include connecting PVC irrigation mainlines to copper water service entries, transitioning from PVC to CPVC risers, and adapting PVC lines to PEX distribution systems. Its lead-free construction makes it appropriate for both irrigation and potable water plumbing installations in residential and light commercial settings.

Key Features

• Lead-free construction suitable for potable water systems
• 3/4-inch PVC socket inlet transitions to 3/4-inch MNPT outlet
• Compatible with CPVC, copper, and PEX supply systems
• Lightweight at 0.26 pounds for easy handling during rough-in
• Compact dimensions allow installation in tight spaces

Compatibility

Designed as a transition fitting for 3/4-inch PVC service lines connecting to threaded adapters on CPVC, copper, or PEX supply systems, including PVC irrigation lines connecting to copper water service systems.

Installation Notes

Installation is performed by a licensed plumber or qualified irrigation technician. Shut off the water supply and depressurize the line before fitting. The PVC socket end requires solvent cement per the pipe and fitting manufacturer instructions and applicable plumbing code. The MNPT end should be sealed with thread sealant tape or paste rated for the intended service before assembly; do not overtighten the threaded connection.