OPW SRH Bottom Loading Arms allow simultaneous connecting and filling of up to three product lines. Similar to counterweighted hose loaders, SRH loaders are generally stored horizontal and only slight upward or downward movement is required to align the coupler with the tank truck adaptor.
A proven performer in oil terminals around the world, the SRH sets the standard for cost-effective, low-maintenance and user-friendly operation.
| Drop Spool | 4" Aluminum or Carbon Steel | As Required |
|---|---|---|
| Drop Hose | 4" Rackmaster Composite, 80" OAL, TTMA Flanged Ends | L19080 |
| 4" Braided Stainless Steel, 80" OAL, TTMA Flanged Ends | L19081 | |
| Coupler Swivel | 4" Style 30 (90º) Swivel Joint with Maneuvering Handle | |
| TTMA Flanged Ends, Aluminum/ Low Temp Fluorocarbon | 3635FTH-0402 | |
| Butterfly Valve | 4" Full Flow, Position-Locked Butterfly Valve | LBV450VGL |
| Spacer Spool | 4" Loading Arm Coupler Spool, TTMA Flanged Ends, Aluminum | |
| 6" OAL | VSS4 | |
| Sight Glass | 4" Acrylic Sight Glass, Tempered, Cast Acrylic | BF4-SG-25 |
| API Coupler | 4" API Bottom Loading Coupler | |
| Manual Version: | 1004D3-0402 (Fluorocarbon Seals) | |
| Semi-Automatic Version: | LYNX852 (Fluorocarbon Seals) |





All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.
| Materials | Carbon Steel/Aluminum |
|---|---|
| Seals | Low Temp Fluorocarbon |
| Working Pressure | 125 PSI (862 kPa) |
| Test Pressure | 188 PSI (1296 kPa) |
| Operating Temp | -20° to 140° |
| Up/Down Angular Movement | +45° to -15° (from horizontal) |
| Typical Horizontal Spacing | 26" (660 mm) |
| Typical Vertical Spacing | 15" (381 mm) |
| Typical Reach (radius) | 50" to 70" (1300 mm to 1778 mm) |
| Typical No. of arms per bay | up to 5 |
OPW Engineered Systems is the only manufacturer of absolutely every type of loading arm in existence. With unmatched pre- and post-sale support, we design an entire system that’s right for your terminal, complete with every accessory and component necessary to help give you optimum performance.
The transfer of volatile, valuable, potentially toxic fluids requires highly engineered loading arms, couplers and swivels. OPW Engineered Systems is the global leader in the design and manufacture of products that transfer fluids SAFER, CLEANER, FASTER.
The OPW 790 Series EZ Adjust Loading Arm Spring-Balance permits any one of a full range of spring balance adjustments with a simple turn of the wrench. The 790 is the ultimate user-friendly solution to spring adjustment. With this technology, you no longer have to have the loading arm in the vertical position to make adjustments. In most cases, adjustments can be made from any position.
How to replace the seals for OPW Engineered Systems' 3000 Series Swivel. Removing the ball bearings allows access to the main seal and environmental seal.

| Drop Spool | 4" Aluminum or Carbon Steel | As Required |
|---|---|---|
| Drop Hose | 4" Rackmaster Composite, 80" OAL, TTMA Flanged Ends | L19080 |
| 4" Braided Stainless Steel, 80" OAL, TTMA Flanged Ends | L19081 | |
| Coupler Swivel | 4" Style 30 (90º) Swivel Joint with Maneuvering Handle | |
| TTMA Flanged Ends, Aluminum/ Low Temp Fluorocarbon | 3635FTH-0402 | |
| Butterfly Valve | 4" Full Flow, Position-Locked Butterfly Valve | LBV450VGL |
| Spacer Spool | 4" Loading Arm Coupler Spool, TTMA Flanged Ends, Aluminum | |
| 6" OAL | VSS4 | |
| Sight Glass | 4" Acrylic Sight Glass, Tempered, Cast Acrylic | BF4-SG-25 |
| API Coupler | 4" API Bottom Loading Coupler | |
| Manual Version: | 1004D3-0402 (Fluorocarbon Seals) | |
| Semi-Automatic Version: | LYNX852 (Fluorocarbon Seals) |





All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.
| Materials | Carbon Steel/Aluminum |
|---|---|
| Seals | Low Temp Fluorocarbon |
| Working Pressure | 125 PSI (862 kPa) |
| Test Pressure | 188 PSI (1296 kPa) |
| Operating Temp | -20° to 140° |
| Up/Down Angular Movement | +45° to -15° (from horizontal) |
| Typical Horizontal Spacing | 26" (660 mm) |
| Typical Vertical Spacing | 15" (381 mm) |
| Typical Reach (radius) | 50" to 70" (1300 mm to 1778 mm) |
| Typical No. of arms per bay | up to 5 |
OPW Engineered Systems is the only manufacturer of absolutely every type of loading arm in existence. With unmatched pre- and post-sale support, we design an entire system that’s right for your terminal, complete with every accessory and component necessary to help give you optimum performance.
The transfer of volatile, valuable, potentially toxic fluids requires highly engineered loading arms, couplers and swivels. OPW Engineered Systems is the global leader in the design and manufacture of products that transfer fluids SAFER, CLEANER, FASTER.
The OPW 790 Series EZ Adjust Loading Arm Spring-Balance permits any one of a full range of spring balance adjustments with a simple turn of the wrench. The 790 is the ultimate user-friendly solution to spring adjustment. With this technology, you no longer have to have the loading arm in the vertical position to make adjustments. In most cases, adjustments can be made from any position.
How to replace the seals for OPW Engineered Systems' 3000 Series Swivel. Removing the ball bearings allows access to the main seal and environmental seal.

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Reach Out to Our Customer Support Team for Prompt Assistance and Answers to Any Questions or Concerns You May Have
Contact Us for Technical Support on Your Projects and Resolving Any Technical Issues You Encounter