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Allegheny Valve & Coupling · Hardware & Fasteners
20189D
In stock · ships from Knoxville
This is a 4-inch aluminum TTMA flat flange used to create a bolted, welded connection in tank trailer piping systems.
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Verified fitment for 3 applications
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TTMA standard bolt pattern is widely used on tank trailers for petroleum, chemical, and dry bulk applications.
Part data verified against 4 catalog sources
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It provides a standard interface for valves, plumbing, and other components on crude oil, gas, and chemical tank trailers. You typically replace the flange when it becomes damaged, corroded, or during a trailer plumbing overhaul to maintain a leak‑free, secure connection. The aluminum construction keeps weight low while offering good corrosion resistance, and the 8‑hole TTMA bolt pattern ensures compatibility across common tank trailer hardware.
Part Number: 20189D
4 AL 8-HOLE FLANGE
Unit: ea
Dealer: Post Onsite
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