OPW Engineered Systems
A-Frame Pipe (AFP) Bottom Loading Arm

AFP Dimensions

AFP Order Guide

The AFP (A-Frame Pipe) Loader is a popular loading arm configuration due to its flexibility and convenience of use. Ideal for lower riser heights and when crossover isn’t as important (one or two fueling lines). Similar to our AFH Loader, but utilizes piping in place of hose to simplify maintenance.

Features & Benefits:

• 3000 Series Swivel Joints
  • Simple, Proven Design
  • Carbon Steel/Aluminum Construction
  • Low-Temperature Fluorocarbon Seals
  • Wide Compatibility
  • 790 EZ Adjust Counterbalance
    • Safe, Easy Spring Adjustment
    • Integral Upward, Downward Travel Stops
  • Braided Stainless Steel or Rackmaster Composite Hoses
  • Available with Lynx Bottom Loading Coupler
  • Available in 3” and 4” Sizes
  • Stores in Upright, Near-Vertical Position
  • Low Riser Mounting Heights
  
  

  Technical Features

  Materials	(CA) Carbon Steel/Aluminum
  Seals	Low-Temp Fluorocarbon
  Working Pressure	80 PSI (5.5 Bar)
  Test Pressure	120 PSI (8.2 Bar)
  Operating Temperature	-20ºF to 140ºF (-29ºC to 60ºC)
  Up/Down Angular Movement	80º to 45º (from horizontal)
  Typical Horizontal Spacing	24" (610 mm)
  Typical Vertical Spacing	18" (457 mm)
  Typical Reach (radius)	60" (1,524 mm)
  Nominal Diameter	3" and 4"
  Typical Flow Rates (Velocities < 15 ft/sec (7.5 m/sec))	200-600 GPM (757-2271 LPM)
  Weight	~275 lbs*

  *Estimated weight for entire Loading Arm (72" Reach). Weight can vary depending on selected options.
  
  
  

  Materials of Construction

  Inlet Flange	4" 150 ANSI ASTM A105
  Inlet Swivel	Ductile Iron ASTM A536
  Primary Arm Piping	Sch 40 Aluminum ASTM B241
  Apex Swivel (p/n 3640FT-0402)	Aluminum ASTM B26 A356 T6
  Coupler Swivel (p/n 3635FTH-0402)	Aluminum ASTM B26 A356 T6
  Drop Hoses	(L1980) Braided Stainless Steel, TTMA Ends (L19081) Rackmaster Composite, TTMA Ends
  Isolation Valve (LBV450VGL)	Cast Aluminum/Fluorocarbon
  Spacer Spool (p/n VSS4)	Cast Aluminum AA601
  API Coupler (p/n 1004D3, Lynx852VG)	Aluminum/Fluorocarbon

  
  
  

  Additional Information

  Weld Protection	Per the ASME Boiler & Pressure Vessel Code Section IX
  Radiograph/X-Ray	Per OPW Standard, 5% random/factory lot
  Testing	All assembled Loading Arms shall be tested to 1.5X the rated design pressure.
  Surface Treatments	All Carbon Steel components to be protected with a 2-part paint process. Aluminum components to be unpainted.
  Lubricant	OPW 880 High-Performance Synthetic Lubricant
  Gasketing	KlingerSil C5400

  
  
  

  Recommended Spare Parts List**

  Part #	Description	Where Used	Qty/Arm
  3000RK-0402	3000 Series Swivel Seal Kit, 4" Fluorocarbon	All Swivels (Counterbalance, Apex, Coupler Swivels)	5
  1004D3SRK-0402	Coupler Seal Repair Kit, 4" Fluorocarbon	1004D3-0402 (API Coupler)	1
  API850VGSK	Coupler Seal Repair Kit, 4" Fluorocarbon	Lynx852VG (API Coupler)	1

  **Other seal kits/materials available upon request