Merit Brass 650-16 Slip-on Pipe Flange 1 in 316 Ss 150 Psi

Product Description

The MERIT BRASS 650-16 is a slip-on pipe flange machined from Grade 316 stainless steel, designed for 1-inch pipe with an outside diameter of 4.25 inches. It accepts bolted connections through 4 bolt holes, each measuring 0.625 inches, centered 3.125 inches apart across the bolt circle. Rated at 150 psi, this flange is suited for fluid, gas, and process piping systems where corrosion resistance and material integrity are critical. Plumbers and pipefitters install this type of flange in commercial and industrial applications where standard ANSI 150-class slip-on flanges are specified.

This flange fits 1-inch nominal pipe in systems requiring a bolted face connection at joints, transitions, or equipment interfaces. The Grade 316 stainless steel construction makes it appropriate for corrosive service environments, including marine, chemical processing, food service, and sanitary piping installations. It is a circular, 4-bolt pattern flange following standard 150-class dimensional conventions, making it compatible with matching 150-class flange faces and gaskets in the same pipe size.

Key Features

• Grade 316 stainless steel construction for strong corrosion resistance in aggressive service environments
• Slip-on design allows pipe to pass through the flange bore before welding, simplifying field alignment
• 150 psi pressure rating for standard low-pressure piping service
• 4-bolt hole pattern with 0.625-inch bolt holes on a 3.125-inch bolt circle diameter
• 4.25-inch outside diameter fits standard 150-class flange dimensions for 1-inch pipe
• Circular shape with consistent machined geometry for reliable face-to-face seating

Compatibility

Designed as an OEM-style replacement or new-installation slip-on pipe flange for 1-inch nominal pipe in 150-class flanged piping systems.

Installation Notes

Slip-on flanges are installed by a licensed pipefitter or plumber and require fillet welding at both the face and bore sides of the flange after the pipe is inserted. Shut off and depressurize the system completely before removing any existing flanges or beginning pipe preparation. Follow applicable codes such as ASME B31.3 for process piping or ASME B31.1 for power piping when specifying weld procedures and bolt torque sequences. Use a compatible 150-class gasket and fastener set rated for the service fluid and temperature range.