OPW Engineered Systems
Short-Range Hose (SRH) Bottom Loading Arm

SRH Dimensions

SRH Order Guide

OPW's most popular Terminal Loading Arm, the SRH is a proven performer in Oil Terminals across the world. Its simple, yet robust, design has provided decades of reliable service. Ideal for retrofits of existing spring-balanced arms, as well as new installs, the SRH is ideal for applications up to four arms.

This simple arm incorporates only three swivel planes of rotation and is designed for use in top-loading installations where the vehicle is located at a fixed distance from the riser pipe. The two swivel planes at the inlet permit both up-and-down and side-to-side movement of the assembly, and the third swivel plane allows the drop pipe to remain vertical.

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
• Ideal for Converting Top-Loading Rack to Bottom-Loading Configuration

Technical Features

Materials	Carbon Steel/Aluminum
Seals	Low-Temp Flurocarbon
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 -15ºC (from horizontal)
Typical Horizontal Spacing	24" (610 mm)
Typical Vertical Spacing	18" (457 mm)
Typical Reach (Radius)	60" to 72" (1,524 mm to 1,829 mm)
Nominal Diameter	4"
Typical Flow Rates (Velocities < 15 ft/sec (7.5 m/sec))	300-600 GPM (2000-3500 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	(L19080) Braided Stainless Steel, TTMA Ends (L19080) Braided Stainless Steel, TTMA Ends
Coupler Swivel (p/n 3635FTH-0402)	Aluminum ASTM B26 A356 T6
Isolation Valve (LBV450VGL)	Cast Aluminum/Flurocarbon
Spacer Spool (p/n VSS4)	Cast Aluminum AA601
API Coupler (p/n 1004D3, Lynx852VG)	Aluminum/Flurocarbon

Additional Information

Weld Procedure	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" Flurocarbon	All Swivels (Counterbalance, Apex, Coupler Swivels)	4
1004D3SRK-0402	Coupler Seal Repair Kit, 4" Flurocarbon	1004D3-0402 (API Coupler)	1
API850VGSK	Coupler Seal Repair Kit, 4" Flurocarbon	Lynx852VG (API Coupler)	1