Nibco ca21800 4551-H Pvc Flange Socket 2 Inch Schedule 80 Dark Grey

Product Description

The NIBCO ca21800 is a Schedule 80 PVC flange fitting designed for use in industrial, commercial, and residential piping systems. It carries the model designation 4551-H and is built for a 2-inch nominal pipe size. This flange uses a socket connection type, allowing it to be solvent-welded directly to compatible PVC pipe for a strong, permanent joint. The dark grey color is the standard identifier for Schedule 80 PVC fittings, helping plumbers and pipefitters quickly distinguish them from lighter-duty Schedule 40 components on the job site. Schedule 80 PVC offers greater wall thickness and higher pressure ratings compared to Schedule 40, making it a reliable choice for more demanding installations. The fitting measures 6 inches in length and 1.7 inches in height, with a net weight of 0.956 pounds. It is rated for use with potable water and carries NSF/ANSI 372 compliance, confirming it meets lead-free standards for drinking water contact. Plumbers, pipefitters, and industrial contractors rely on flanges like this one to connect pipe sections to valves, pumps, tanks, and other equipment. The socket end allows for easy alignment and solvent cementing during installation, reducing the chance of misalignment or leaks at the joint. PVC flanges are corrosion-resistant, lightweight, and well-suited for water treatment, chemical processing, irrigation, and general plumbing applications. The NIBCO ca21800 is a straightforward, code-compliant fitting that gets the job done in systems where durability and chemical resistance matter. Whether you are building a new system or replacing an existing flange, this fitting delivers consistent performance in Schedule 80 PVC piping configurations.

• Schedule 80 PVC construction provides increased wall thickness and higher pressure capability compared to Schedule 40
• Socket connection type allows for clean solvent-welded installation on standard 2-inch PVC pipe
• NSF/ANSI 372 compliant for lead-free potable water applications

Product Highlights

The NIBCO ca21800 4551-H is a 2-inch Schedule 80 PVC socket flange that delivers corrosion-resistant, lead-free performance for industrial, commercial, and plumbing piping systems. Its dark grey coloring and socket end make it easy to identify and install in demanding applications.

Product Information

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: ca21800

Technical Specifications

• Item Type: Flange
• Body Material: PVC
• Color: Dark Grey
• Connection Type: Socket
• Height: 1.7 inches
• Length: 6 inches
• Net Weight: 0.956 pounds
• Nominal Pipe Size: 2 inches x 2 inches
• Pipe Schedule: 80
• Potable Water Compliance: NSF/ANSI 372 Lead-Free Compliant
• Size: 2 inches