Part #: TMC20144

20-Inch 8 Bolt Stainless Steel/ Carbon Steel Manway Cover with Pipe Nipple, Trinity Arrangement

Salco Products (TMC20144) 20-Inch 8 Bolt Stainless Steel/ Carbon Steel Manway Cover with Pipe Nipple and a Mill Finish features a 1/2-inch thick, 316L stainless steel, manway dome and carbon steel manway ring welded together. The manway has eight (8) 1-1/64-inch eye bolt slots on a 23-7/8-inch bolt circle with an AAR #1 style gasket groove. Also includes two (2) carbon steel manway hinges, and a carbon steel manway safety stop. The 316L stainless steel, 2-inch NPT, pipe nipple is 3-inches tall. Length from the center of the manway cover to the center of the hinge bolt holes is 13.75-inches. Fits Trinity OEM nozzle arrangement. AAR Approval # E-182113.

Key features

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Salco's manway covers are available in both 6 and 8 bolt patterns and can be installed on most major manufacturers' tank cars.

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ASTM A-36 Steel and 316L Stainless options with mill, satin or polished finish.

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Fully customizable; can add threaded ports and safety vent bosses.

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AAR Style #1 Gasket Groove.

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Paintable; match your cars color.

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Meets chemical/food grade service standards.

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Works with the Salco Lift Assist device.

Specifications

Air Inlet Nipple
2"
Finish
Mill
Material
Stainless Steel
No of Bolts
8
OEM Arrangement
Trinity
Pipe Coupling
No
Quick Inspect Boss
No

Resources

Product Card • December 17, 2025

20 Inch Manway Cover
General Purpose Tank Car Catalog

e-Catalog • February 12, 2026

General Purpose Tank Car Catalog