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Allegheny Valve & Coupling, Inc. · Hardware & Fasteners
20286
In stock · ships from Knoxville
This is a 4-inch by 3-inch steel concentric reducer, a pipe fitting that smoothly transitions flow between a 4-inch pipe and a 3-inch pipe while keeping both ends centered on the same axis.
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Verified on Allegheny Valve & Coupling distribution listings that mark this part for 'Petroleum Trailer' use. Exact vehicle makes/models are not documented.
Part data verified against 2 catalog sources
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It is typically used in the plumbing of petroleum tank trailers to connect lines of different diameters, ensuring a steady, turbulence‑reduced flow. You’d replace it if the original is corroded, cracked, or when reconfiguring a trailer’s piping system.
Part Number: 20286
4X3 REDUCER M/S CONCENTRIC
Unit: ea
Dealer: Post Onsite
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