Sioux Chief 642WP3 F1960 Pex-a 90 Degree Elbow 3/4 Inch

Product Description

The SIOUX CHIEF 642WP3 is a 3/4-inch F1960 PEX-A polypropylene 90-degree elbow fitting designed for use in PEX-A expansion-style plumbing systems. This elbow conforms to the ASTM F1960 standard, meaning it is installed using an expansion tool and ring — not a crimp or clamp method. The fitting connects two 3/4-inch PEX-A lines at a right angle and is used to route water supply lines around corners in both hot and cold water distribution applications. Licensed plumbers and pipefitters handling PEX-A rough-in work are the primary installers of this fitting.

The 642WP3 is suited for residential and light commercial potable water supply systems where PEX-A tubing is specified. It is commonly installed during new construction or remodel rough-in when the plumber needs to change direction in a water supply run. The F1960 expansion connection style provides a reliable, leak-resistant joint when the correct expansion ring and PEX-A tubing are used together. Both hot and cold water supply lines are typical applications.

Key Features

• F1960 expansion-style connection — compatible with PEX-A tubing only, not PEX-B or PEX-C
• 90-degree elbow geometry for right-angle direction changes in supply runs
• 3/4-inch by 3/4-inch sizing for standard residential water supply line diameter
• Polypropylene construction provides corrosion resistance in potable water systems
• Conforms to ASTM F1960 standard for expansion-type PEX fittings

Compatibility

Designed for use with 3/4-inch PEX-A tubing in ASTM F1960 expansion-style plumbing systems. This fitting is not compatible with PEX-B or PEX-C tubing or with crimp and clamp connection methods.

Installation Notes

Installation of the 642WP3 requires a calibrated PEX-A expansion tool and the corresponding F1960 expansion ring — always follow the tool and fitting manufacturer's instructions for proper expansion and connection. Shut off the water supply and depressurize the line before beginning any fitting work. This fitting should be installed by a licensed plumber in accordance with the applicable local plumbing code and IPC requirements. Do not use this fitting with PEX-B or PEX-C tubing, as the expansion method is specific to PEX-A material.

Technical Specifications

• Connection Type: F1960 Expansion (PEX-A)
• Fitting Angle: 90 Degrees
• Size: 3/4 inch x 3/4 inch
• Material: Polypropylene
• Standard: ASTM F1960
• UPC: 739236423856

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: 642WP3