Part #: TMC20611

20-Inch 6 Bolt Stainless Steel Manway Cover, Trinity Arrangement

Salco Products (TMC20611) 20-Inch 6 Bolt Stainless Steel Manway Cover with Mill Finish features a 1/2-inch thick, 316L stainless steel, manway dome and manway ring welded together. The manway has six (6) 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) 304 stainless steel manway hinges, and a 304 stainless steel manway safety stop. Length from the center of the manway cover to the center of the hinge bolt holes is 14.25-inches. Fits Trinity OEM nozzle arrangement. AAR Approval # E-182114.

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
No
Finish
Mill
Material
Stainless Steel
No of Bolts
6
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