Merit Brass 650-20 Slip on Pipe Flange 1-1/4 in SS316

Product Description

The MERIT BRASS 650-20 is a slip-on pipe flange designed for 1-1/4 inch pipe with a 4-5/8 inch outside diameter. Manufactured from Grade 316 stainless steel, it provides strong corrosion resistance in demanding wet, chemical, or marine environments. The flange features four bolt holes spaced 3-1/2 inches across bolt hole centers, with each hole measuring 5/8 inches in diameter, and is rated for service up to 150 psi. Licensed plumbers and pipefitters install this type of flange in process piping, industrial systems, and commercial plumbing applications where stainless steel is required for durability or code compliance.

This flange is suited for use in residential, commercial, and light industrial piping systems requiring a reliable, weld-neck-free slip-on connection at 150-class pressure ratings. Grade 316 stainless steel construction makes it a common choice in corrosive service environments including food processing, marine, and chemical handling installations. It accepts standard 1-1/4 inch nominal pipe and connects using four standard fasteners through the bolt circle pattern.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance
• Slip-on connection style for straightforward field installation
• 4-5/8 inch outside diameter fits standard 1-1/4 inch nominal pipe
• Four bolt holes at 3-1/2 inches across bolt hole centers, 5/8 inch hole diameter
• 150 psi pressure rating for general service applications
• Circular shape with uniform bolt pattern for consistent seating

Compatibility

Designed as an OEM-style replacement or new-installation slip-on pipe flange for 1-1/4 inch nominal pipe systems operating at 150-class pressure ratings.

Installation Notes

Installation of pipe flanges is typically performed by licensed plumbers or pipefitters in accordance with applicable ASME and IPC standards. Depressurize and drain the line completely before removing any existing flange or making new connections. Slip the flange onto the pipe to the correct position before welding or fastening, and verify bolt hole alignment before final assembly. Use appropriate gasket material rated for the service fluid and pressure.