CIVACON PETROLEUM MANHOLE COVERS Existing customers can log in to their account for additional savings Call for price Categories: Chemical, Chemical Tank Truck Parts, Dry Bulk, Dry Bulk Parts, Dry Bulk Tank Truck Parts, Liquid - Petroleum, Petroleum Tanks Truck Parts, Tank Truck Equipment Description Specification Description Civacon’s Petroleum Manhole Covers are the perfect choice for all of your Petroleum cargo tank applications. Our Manhole Covers are ideal for use in new construction, or as a replacement cover for all DOT406 and older MC306 cargo tanks. They meet HM183 replacement requirements and178.345‐5 venting requirements. They’re precision design and construction limits leakage in a roll‐over situation to less than one liter, as required by standards. Each features a versatile 10” aluminum vent, which is set to open at not less than 3.63PSI, and, if needed, can be safely and easily disassembled for field repairs. Civacon manhole covers set the industry standard for precision and durability. We offer models for both 16”and 20” manhole openings, in centered and offset fill cover styles. Easy, single ordering part numbers are available, for assemblies with and without weld rings. Features & Benefits All include (1) Model NV3000 Pressure / Vacuum Vent installed in fill cover. • Emergency vent is 363,500 SCFH at 6.25PSI • Retrofits to existing weld rings • Reversible PAF opening (hinge) direction • Cover can be made self‐latching in the field in minutes by adding our Part No. 6261 Latching Kit • Buna‐N gaskets are standard – optional materials are available upon request • 10” vent can be safely and easily disassembled in the field for repairs. • Offset Models include holes for the Vapor Valve and Overfill Detection Sensor, plus a ¼‐inch NPT weld coupling for a brass plug. • Aluminum Weld Ring, 3‐inch high x ¼‐inch thick, type6061, included on models so designated. Specifications**16” and 20” Manhole Covers w/NV3000 Part # Description SSVN111110 16” Offset Manhole with Weld Ring SSVN101110 16” Offset Manhole without Weld Ring SSTN111100 16” Centered Manhole with Weld Ring SSTN101100 16” Centered Manhole without Weld Ring SSWN111120 20” Offset Manhole with Weld Ring SSWN101120 20” Offset Manhole without Weld Ring SSUN111100 20” Centered Manhole with Weld Ring SSUN101100 20” Centered Manhole without Weld Ring 4754 16” Aluminum Weld Ring only 4755 20” Aluminum Weld Ring only Related products Aluminum WD Valve – Standard Wooden Dip Sticks Dry Bulk – Air Pressure Relief Valves PPV VENT