W940 ‘A’ Frame

W940 ‘A’ Frame bottom loading arms for chemical/industrial products are ideal for loading/unloading tank trucks and rail cars. ‘A’ Frame loading/unloading arms are best suited for narrow lanes or where servicing both sides of the lane is required. For tank trucks, ‘A’ Frame bottom loading/unloading arms can also service the rear of the vehicle.

W940 has a solid drop pipe and a 2-plane Style-50 Outboard swivel joint with handle at the outboard end.

Outboard connections are typically dry-beak coupler, hammer union or cam and groove coupler to suit the application. Breakaway couplings and purge systems can be incorporated as required.

W940 A Frame


Sizes in 2”, 3”, 4” and 6”.


  • Materials of construction: Carbon steels, aluminum, 304L, 316L and 904L stainless steel. Exotic alloys, Duplex Stainless Steel, Super Duplex Stainless Steel, Alloy 20, Monel, Inconel and more.
  • Dual race Split Flange WL2 or Single race WSS swivel joints
  • Seals in Viton™, Nitrile, EPDM, PTFE, Kalrez™ etc. to suit the application
  • Compression spring, counterweight, pneumatic or hydraulic balance control systems
  • Available in Left Hand or Right Hand, Up-feed or Down-feed and Side-feed configurations
  • Typical range of vertical movement is +60°/+30°
  • Typical primary length of 1,500mm. Drop tube of 1,800mm with Style-50 swivel joint and handle at the outboard end.
  • All dimensions can be changed to suit each application.

See Chemical and Industrial Loading Arm Options tab for additional optional equipment

See “Heated Loading/Unloading Arms” tab. All loading arm configurations can be heated and insulated