Gas Strut Hose (GSH) Bottom Loading Arm

The GSH provides effortless bottom loading in petroleum-distribution terminals through the use of a unique operational capability known as the Velvet Touch.

The ability of 360-degree rotation in the horizontal plane allows the GSH to easily move from a parked to a loading position, and to service vehicles on either side of the loading bay. Additionally, the vertical-plane swivel allows users to position the coupler at different heights within the API envelope.

The New StandardLine

StandardLine Loading Arms by OPW Engineered Systems raise the bar in quality and performance for the industry. Get OPW's best-in-class loading systems in pre-engineered sizes, materials and feed orientations with delivery in 20 days or less. All StandardLine Loading Arms feature:

  • Fast Delivery!
  • Menu of Options to Customize Your Arm
  • Included Freight in the Continental US and Canada
  • Exclusive 3-Year Warranty

Features & Benefits

  • Velvet Touch Gas Struts provide smooth operation over the entire stroke of the loading arm
  • Exceptional durability and minimal service requirements
  • Any unit can be easily configured for left-hand, right-hand, upward and downward configurations on-site
  • Enhanced strength and ease of adjustment through a heavy-duty adjustment mechanism
  • Adjustable up/down stop that can be set with minimal effort
  • Long reach capabilities, ideal for five-, six- and seven-arm bays

Dimensions

Gas-Strut Hose (GSH) Loading Arm*

StandardLine Terminal Configuration*

GSH-dimensions

*Required to accommodate StandardLine Offering. Other options available upon request.

**Left-hand configuration shown. Right-hand configuration would be mirror image with riser elevations going up from left to right. Contact OPW for layout assistance.

***Provides 72" Reach, StandardLine also available with 60" reach. Other lengths available upon request.

Technical Features

MaterialsCarbon Steel/Aluminum
SealsLow-Temp Flurocarbon
Working Pressure80 PSI (5.5 Bar)
Test Pressure120 PSI (8.2 Bar)
Operating Temperature-20ºF to 140ºF (-29ºC to 60ºC)
Up/Down Angular Movement-15º to 15º (from horizontal)
Typical Horizontal Spacing18" (457 mm)
Typical Vertical Spacing18" (457 mm)
Typical Reach (Radius)60" to 90" (1,524 mm to 2,286 mm)
Nominal Diameter4"
Typical Flow Rates (Velocities < 15 ft/sec (7.5 m/sec))

300-600 GPM (2000-3000 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 SwivelInvestment Cast 4130 Steel
Primary Arm PipingSch 40 Aluminum ASTM B241
Apex Swivel (p/n 3640FT-0402)Aluminum (Heat Treated)
Drop Hoses

(L19080) Braided Stainless Steel, TTMA Ends

(L19081) Rackmaster Composite, TTMA Ends

Coupler Swivel (p/n VNI-A4VG)Aluminum(Heat Treated)
Isolation Valve (LBV450VGL)Cast Aluminum/Flurocarbon
Spacer Spool (p/nVSS4)Cast Aluminum AA601
API Coupler (p/n 1004D3, Lynx852VG)Aluminum/Flurocarbon, Low-Temp Flurocarbon

Additional Information

Weld ProcedurePer the ASME Boiler & Pressure Vessel Code Section IX
Radiograph/X-RayPer OPW Standard, 5% random/factory lot
TestingAll assembled Loading Arms shall be tested to 1.5X the rated design pressure.
Surface TreatmentsAll Carbon Steel components to be protected with a 2-part paint process. Aluminum components to be unpainted.
LubricantOPW 880 High-Performance Synthetic Lubricant
GasketingKlingerSil C5400
WarrantyStandard warranty of three years after date of invoice shall apply. LYNX API Coupler warranty to be three years after shipment from factory. 790 Counterbalance warranty to be five years after shipment from factory.
FreightAll shipments are F.O.B. Factory Lebanon, OH. Full freight is allowed on surface transportation within continental United States and Canada.
Factory Assembly, Testing & Boxing (ATB)If this option is selected, Loading Arm would be fully assembled, tested and shipped in protective wooden crate. Note: It may be necessary to ship Loading Arm in sections to accommodate crating, shipping and rigging. Arm will be shipped as fully assembled as possible.

Recommended Spare Parts List**

Part #DescriptionWhere UsedQty/Arm
3000RK-04023000 Series Swivel Seal Kit, 4" FlurocarbonAll Swivels (Counterbalance, Apex, Coupler Swivels)4
1004D3SRK-0402Coupler Seal Repair Kit, 4" Flurocarbon1004D3-0402 (API Coupler)1
API850VGSKCoupler Seal Repair Kit, 4" FlurocarbonLynx852VG (API Coupler)1

**Other seal kits/materials available upon request.

Ordering Information

Build Your Standard GSH Arm

1. Fill in the corresponding code for your selections.

2. Add accessories by filling in the appropriate corresponding number for each option.

GSH-ordering-guide

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