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Loading & Coupling System

OPW Engineered Systems, part of the OPW Fluid Transfer Group, provides expert solutions for the safe handling, transfer, monitoring, measuring and protection of hazardous bulk products worldwide.OPW Engineered Systems specializes in the engineering, designing and manufacturing of systems for the safe and efficient loading and unloading of critical hazardous materials

Loading Arm System

Benefits and Features

  • Ease of operation
  • Adequate horizontal and vertical range
  • Adequate capacity without excessive pressure drop
  • Ease of maintenance
  • Materials adequate for the service – metals, seals and gaskets that are chemically compatible with the products being handled, as well as transfer temperatures and prevailing climatic conditions.

Top Loading/Unloading Arm


  • Long reach
  • Design flexibility means it can be used for any application
  • Folded back on itself, it can be stored easily
  • Optional valve and remote Features
  • Available in 2”, 3” and 4”
  • Available in carbon steel, stainless steel, aluminum and specialty alloys
  • Choice of flanged, threaded or all-welded construction

Bottom Loading/Unloading Arm


  • Easy to operate/maneuver
  • Accommodates changes in elevation
  • Scissor-back storage means no wasted space Feature
  • A minimum of five planes of rotation
  • Available in 2”, 3”, 4” and 6” (steel, stainless steel, aluminum, and specialty alloys)
  • Choice of flanged, threaded or all-welded construction

Quick and Dry Disconnects

Benefits and Features

  • Reduce product loss
  • Provides for Total Closed-Loop Loading Capabilities
  • Heavy duty Construction
  • Durable and Efficient
  • Added protection

Quick Disconnect Fitting


  • Cam and Groove Design – Provides for reliable, smooth operation in 360° orientation.
  • Exclusive Twin-Kam™ Arms – Provides detent position that helps prevent unintentional arm release beyond 45°
  • Spring - Ring TM  Finger Rings – Rings won’t get trapped under the arms with this patented feature, so opening/closing is quick and easy every time.
  • Available in 316 SST steel in a wide variety of sizes/styles

Dry Disconnects


  • Poppeted Seal Cylinder with Snap-on Nose Seal - Keeps hazardous liquids in-line and out of the environment Nose seal can be easily replaced without need for new seal cylinder - AUTOMATIC CLOSURE
  • Autolok® Locking Arms - Provide added protection with an automatic locking mechanism - Uncoupling requires only an easy tug on the lock release

Safety Breakaways


  • Protection of loading-arm components
  • Protection of loading facility
  • Spill prevention
  • ReconnectableMaterials: Stainless Steel (316). Others available upon request Seals: EPDM, Fluorocarbon, Chemraz® Pressure Ratings: 150 to 600 psi Available in 1", 2", 3", 4" and 6" (other sizes up to 12" available upon request)