Lasco 851-H40 Pvc Schedule 80 Flange Hub 4 Inches

Product Description

The LASCO 851-H40 is a 4-inch Schedule 80 PVC flange hub designed for pressure-rated piping systems. This fitting connects a pipe to a flanged connection point, allowing bolted assembly to pumps, valves, tanks, and other flanged equipment. Made from PVC, it offers solid chemical resistance for water and wastewater service. The Schedule 80 wall thickness makes it suitable for higher-pressure applications compared to Schedule 40 fittings. Licensed plumbers and pipefitters install this type of fitting in both residential and commercial systems where a leak-free, bolted flange joint is required.

This flange hub is used in PVC Schedule 80 piping systems that require a rigid, pressure-rated transition to flanged equipment. Typical applications include water treatment, irrigation mainlines, pump stations, and industrial fluid handling. The 4-inch size fits standard 4-inch PVC pipe and mates with standard 4-inch ANSI flange bolt patterns. It is suited for above-ground and below-grade installations where PVC is the specified material.

Key Features

• Schedule 80 PVC construction provides higher pressure rating than Schedule 40
• Pressure-rated fitting suitable for pressurized piping systems
• 4-inch size fits standard 4-inch PVC pipe
• PVC material delivers corrosion and chemical resistance
• Socket connection end for solvent-cement joining to pipe

Compatibility

Designed as an OEM-style replacement fitting for 4-inch PVC Schedule 80 piping systems requiring a flanged connection.

Installation Notes

Installation should be performed by a licensed plumber following applicable IPC and local plumbing codes. Shut off and depressurize the system completely before cutting into any existing piping. Use PVC Schedule 80-rated solvent cement and primer on the socket end, following manufacturer dwell and cure time requirements before restoring pressure. Do not subject the assembled joint to pressure testing until full cure is achieved.

Technical Specifications

• Material: PVC
• Schedule: Schedule 80
• Size: 4 inches
• Product Type: Flange Hub
• Pressure Rated: Yes
• Category: PVC Fittings

Standard Information

• Brand: LASCO
• Manufacturer Part Number: 851-H40