Spears 855-007c Van Stone Flange 3/4 in Cpvc Fnpt 150 Psi

Product Description

The SPEARS 855-007c is a 2-piece van stone flange with plastic ring, designed for use in pressure piping systems where a removable, full-face flange connection is required. Constructed from CPVC and rated to 150 psi at 73 degrees F, this flange accepts a 3/4 inch FNPT connection and is built to Schedule 80/XH standards. The van stone design allows the plastic ring to rotate freely, making bolt-hole alignment straightforward during installation. With an outside diameter of 3-7/8 inches and a bolt circle diameter of 2-3/4 inches, it is dimensioned for standard 150 lb flange mating. Licensed plumbers and pipefitters working in chemical handling, industrial, or corrosive-fluid systems specify CPVC flanges where metal fittings are unsuitable.

This flange is suited for residential and light commercial pressure piping applications where CPVC is the system material of choice. It is commonly installed in chemical distribution lines, water treatment systems, and process piping where corrosion resistance is a priority. The FNPT end allows direct threaded connection to Schedule 80 CPVC pipe or fittings. Its gray color is consistent with standard CPVC Schedule 80 system components, making it easy to integrate into existing installations. Domestic manufacture supports traceability requirements on projects where country-of-origin documentation is needed.

Key Features

• 2-piece van stone design with rotating plastic ring for easy bolt-hole alignment
• CPVC construction rated for corrosive-fluid and chemical piping service
• 150 psi pressure rating at 73 degrees F
• Schedule 80/XH rating compatible with heavy-wall CPVC piping systems
• 3/4 inch FNPT connection for direct threaded assembly
• Domestically manufactured for traceability and consistent material quality

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Schedule 80 CPVC pressure piping systems using 3/4 inch FNPT-connected components rated at 150 lb class.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter familiar with thermoplastic pressure piping. Depressurize and drain the system completely before making any flange connections. Use appropriate CPVC-compatible thread sealant on FNPT threads and do not overtighten, as CPVC is susceptible to stress cracking from excessive torque. Follow applicable plumbing codes, including IPC and local amendments, for flange joint assembly and pressure testing requirements.