3/4 inch PEX Copper Insert Coupling PEX x CPVC

$6.73
- +
In stock
2 Available At My Branch
53 Available At All US Supply Locations
Brand
Sioux Chief
Part Number
645XC3
SKU
1921400

3/4 Inch PEX Copper Insert Coupling – Transition Fitting: PEX to CPVC

The 3/4 inch PEX Copper Insert Coupling is engineered for dependable transitions between PEX and CPVC piping systems. This component provides a secure, leak-resistant connection suitable for new construction, remodeling, or system modifications where dissimilar piping types intersect.

Why Material and Construction Matter

This fitting is produced with precision-machined copper, utilizing proven fabrication techniques for structural integrity and dimensional accuracy. Pressure-rated and performance-tested, it ensures consistent results under standard operating conditions. The advantages of using high-integrity transition fittings include:

  • Fewer Jobsite Failures Built to maintain seal under pressure, reducing system failures and the need for rework.
  • Professional-Grade Joints Eliminates soldering at transition points, streamlining the installation process and improving aesthetics.
  • Optimized Flow Profile Maintains internal diameter compatibility to support steady flow and minimize restriction.

Key Product Attributes

  • Nominal Size: 3/4 inch
  • Connection Ends: PEX insert x CPVC socket
  • Construction: Machined copper insert body for durability and corrosion resistance
  • Code Compliance: Fabricated in accordance with applicable plumbing codes and standards

Installation Guidance

Installation requires standard crimp or clamp tools for the PEX connection and solvent cement for CPVC bonding. Proper alignment and fitting depth are essential for full engagement and sealing. For best results, use with approved joining compounds and follow manufacturer-specific procedures. Professional installation is recommended for high-pressure applications.

Application Context

Commonly applied in hybrid plumbing systems, this fitting is ideal where existing CPVC service lines are extended with PEX tubing. It is frequently used during system upgrades, partial retrofits, or when navigating piping through tight spaces where flexible material is preferred.

Code Compliance Note

This coupling is manufactured using lead-free materials in accordance with Safe Drinking Water Act provisions, making it suitable for potable water systems in regulated jurisdictions.

The 3/4 inch PEX Copper Insert Coupling provides a high-reliability solution for transitioning between dissimilar pipe materials. Specify this fitting when dependable sealing, dimensional accuracy, and code compliance are required.

Specifications

Specifications
Weight 0.130000
Brand Sioux Chief
Height 1.13
Length 2.38
Width 1.13
End Style PEX x CPVC
Side A 3/4"
Side B 3/4"
Fitting Type Coupling
Item Type PEX Fittings
MPN 645XC3
Material Copper
Product Family Fittings
Item Returns This item can be returned
Features