Merit Brass 435-12 Threaded Pipe Flange 3/4 in Stainless 304

Product Description

The MERIT BRASS 435-12 is a threaded pipe flange designed for 3/4 inch pipe with a 3-7/8 inch outside diameter, constructed from Grade 304 stainless steel. It provides a secure, leak-resistant connection point in piping systems operating at up to 150 psi. The circular flange features four bolt holes on 2-3/4 inch centers with 5/8 inch bolt hole diameter, making it straightforward to align and bolt to mating flanges or equipment. Plumbers and pipefitters install this type of fitting in both new construction and retrofit applications where a threaded pipe end must transition to a flanged connection.

This flange is suited for residential and light commercial piping systems where corrosion resistance is a priority. The 304 stainless steel construction holds up well in wet environments, including water supply, process fluid, and general-purpose pipe runs. It threads directly onto standard 3/4 inch NPT pipe ends and is appropriate for use in exposed or semi-exposed installations where the fitting may be subject to moisture, mild chemicals, or temperature cycling. A licensed plumber or pipefitter typically handles installation in systems governed by IPC or applicable local plumbing codes.

Key Features

• Grade 304 stainless steel construction for corrosion resistance in wet and mildly corrosive environments
• Threaded connection type for direct installation onto standard 3/4 inch NPT pipe
• 3-7/8 inch outside diameter circular flange with four bolt holes for secure mating
• 2-3/4 inch bolt hole center spacing with 5/8 inch bolt hole diameter for standard bolt alignment
• Rated at 150 psi for reliable performance in typical low-pressure piping applications

Compatibility

Designed as an OEM-style threaded pipe flange for 3/4 inch pipe in standard 150-class flanged piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with IPC or applicable local plumbing codes. Shut off and depressurize the piping system fully before threading on or removing any flange fitting. Use appropriate thread sealant rated for the service fluid when making the threaded connection. Bolt the flange evenly in a cross pattern to ensure uniform gasket compression and a leak-free seal.