OPW Engineered Systems
A-Frame Hose (AFH) Bottom Loading Arm

AFH Dimensions

AFH Order Guide

The AFH is ideal for those applications with lower riser heights. Its simple yet robust design has provided decades of reliable service. Its compact design makes it ideal for loading islands where the arm needs to serve both sides of the platform. Also a good choice for vapor-recovery applications.

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

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	45º to -15º (from horizontal)
Typical Horizontal Spacing	26" (660 mm)
Typical Vertical Spacing	15" (381 mm)
Typical Reach (radius)	60" to 80" (1,524 mm to 2,032 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*

Materials of Construction

Inlet Flange	4" 150 ANSI ASTM A105
Inlet Swivel	Carbon Steel ASTM A105
Primary Arm Piping	Sch 40 Aluminum ASTM B241
Apex Swivel (p/n 3640FT-0402)	Aluminum ASTM B26 A356 T6
Drop Hoses	(H31781M) Rackmaster Composite, TTMA Ends 3"x57" (HX108471) Rackmaster Composite, TTMA Ends 4"x57"
Coupler Swivel (p/n 3635FTH-0402)	Aluminum ASTM B26 A356 T6
Isolation Valve (LBV450VGL)	Cast Aluminum/Fluorocarbon
Spacer Spool (p/n VSS4)	Cast Aluminum
API Coupler (p/n 1004D3, Lynx852VG)	Aluminum/Fluorocarbon Low-Temp 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)	4
1004D3SRK-0402	Coupler Seal Repair Kit, 4" Fluorocarbon	1004D3-0402 (API Coupler)	1