Mars 69029102136 Threaded Flange 3 Inch Cast Iron

Product Description

The MARS 69029102136 is a 3-inch cast iron threaded flange rated for 125 lb service, used to create bolted pipe connections at equipment, valves, and pipe terminations. Cast iron construction provides durability in a wide range of piping applications where a threaded end connection is required. This flange is identified by its CITF03 designation and is a standard component for plumbing, HVAC piping, and mechanical systems. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work where flanged connections are specified.

This threaded flange is suited for 3-inch nominal pipe size applications in residential and commercial mechanical systems. It is commonly installed at pump connections, valve flanges, and equipment tie-ins where a threaded pipe end must transition to a bolted flange joint. The 125 lb pressure class is standard for low-pressure water and hydronic piping systems.

Key Features

• 3-inch nominal pipe size threaded end connection
• 125 lb pressure class rating for low-pressure piping service
• Cast iron construction for corrosion resistance in water and hydronic systems
• Threaded bore accepts standard NPT male pipe thread
• Bolted flange face allows direct connection to mating flanged equipment or fittings

Compatibility

Designed as a standard 3-inch 125 lb class cast iron threaded flange for use in low-pressure plumbing and hydronic piping systems where NPT threaded pipe connections are required.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC and ASME B16.1 requirements. Shut off and depressurize the system before removing or installing any flanged fitting. Apply appropriate pipe thread sealant or PTFE tape to male threads before engagement. Tighten bolts in a cross pattern to ensure even gasket compression at the flange face.