Fernco Inc PQL-400 Qwik Elbow 4x4 Inch Pipe Elbow

Product Description

The FERNCO INC PQL-400 is a 4-inch by 4-inch flexible Qwik Elbow designed for use in drain, waste, and vent piping systems. This elbow fitting allows plumbers and pipefitters to create directional changes in pipe runs without the rigid constraints of standard PVC or ABS fittings. The flexible construction accommodates minor misalignments during installation, reducing the need for precise pre-cutting. Sold in a package of 5 units, the PQL-400 is well suited for production plumbing work, service calls, and retrofit applications where access is limited.

The PQL-400 is used in residential and light commercial plumbing applications wherever a 4-inch elbow transition is required in drain, waste, or vent lines. The flexible design makes it particularly useful in tight spaces, remodel work, and below-slab or in-wall repairs where rigid fittings are difficult to seat properly. Licensed plumbers handling both new construction rough-in and retrofit service work commonly stock this fitting on the truck.

Key Features

• 4-inch by 4-inch sizing fits standard DWV pipe diameters
• Flexible construction accommodates minor pipe misalignment
• Qwik Elbow design speeds installation in confined spaces
• Sold in a package of 5 units for service and production efficiency
• Suitable for drain, waste, and vent piping applications

Compatibility

Designed as an OEM-style replacement and general-use elbow fitting for 4-inch drain, waste, and vent piping systems in residential and light commercial plumbing installations.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC or UPC as adopted in the jurisdiction. Always shut off water supply and ensure the pipe section is depressurized and dry before fitting installation. Follow the manufacturer instructions for proper seating and securing of the flexible elbow to prevent joint movement after installation. Do not exceed the rated pipe diameter or force the fitting onto out-of-spec pipe.

Technical Specifications

• Pipe Size: 4 inches x 4 inches
• Package Quantity: 5 units per package
• Unit of Measure: EA
• Weight: 12.25 pounds

Standard Information

• Brand: FERNCO INC
• Manufacturer Part Number: PQL-400