OPW Loading Arm Systems – Top Loaders

Call 800-876-2826 for current pricing.


Top Loading railcars and trucks continue to provide an efficient and cost effective method to load and unload in many situations.

A loading system should have sufficient horizontal range to reach the farthest compartment without re-spotting the vehicle. Sufficient vertical movement and drop-pipe lengths to service vehicles of varying heights is also necessary. A properly designed top loading system can achieve this requirement. Top loading can also be used for tight-fill and vapor recovery applications when used with specially designed and engineered components, such as vapor plates, tapered hatch plugs, and inflatable hatch seals.

The 7300 IHS Inflatable Hatch Seal is a device for sealing different hatch openings on tank trucks and railcars, preventing the release of vapors into the atmosphere.

Special top loading designs can also be supplied with a wide range of valves, fittings, and instrumentation equipment.

OPW has a long established reputation in the petroleum, chemical and food industries for providing effective loading and unloading systems for the safe and efficient handling of liquids. We work closely with you to design the best system for your application.

Single Arm Fixed Reach Top Loader

Scissor Type Top Loading Arm

Supported Top Loading Boom Arm

Unsupported Top Loading Boom Arm

Slide Sleeve Top Loading Arm