We can help
Get a quote or learn more.


Or call


Chemical Loading arms and holders

SafeRack's 200+ years of combined experience with loading arms allows us to walk clients through every step of the design process from swing arm style to dimensions and materials. We ensure your loading arm is designed and built to specifications and delivered on schedule, the first time.

Each OPW loading arm is designed for ease of operation and handling, which creates a faster, safer loading operation. The rugged construction of these loading arms makes down time and maintenance issues virtually non existent.

We routinely provide options such as overfill protection, vapor recovery, tracking and insulation to meet any requirement or regulation.

Get A Quote
Largest provider of loading arms in the uSA

Endura™ Benefits and features


Heavy-duty construction and unique design features result in long-life, hassle-free performance.

Smooth, Easy Operation

The sealed, one-piece deep-groove dual ball bearing assembly ensures smooth and easy rotation.

Improves Uptime Performance

The simple, three-piece design allows for the quickest and easiest disassembly and repair in the industry, which means less downtime, less labor, and less cost.

Lowest Overall Cost of Ownership

Heavy-duty construction ensures long-life reliability while the unique design features allow for cost-effective preventive maintenance servicing and the easiest, most cost effective seal and bearing replacement of any swivel. Optimized performance, downtime prevention, and reduced maintenance time and costs make this the best overall swivel value in the industry.

Features include:

360° Rotation Full range of motion for ease of use. Deep-Groove Replaceable Dual Ball Bearing Technology – a precision-engineered, one-piece ball bearing assembly means there are no individual balls to deal with. If required, bearing replacement is quick and easy; simply replace the old bearing chamber with a new one. The ENDURA™ DSF 8900 Series features a 316 Stainless Steel replaceable dual ball bearing chamber.

Redundant Seal System

Incorporates a main seal, back-up seal, environmental seal and leak detection. If the main seal ever leaks due to normal wear, the back-up seal contains the fluid. Leakage is then channeled to a leak detection port in the side of the swivel to provide a visual indicator that service is required so the seals can be replaced. The environmental seal provides a third layer of protection, preventing liquid from entering the environment. Seal materials include Buna-N, Viton®, EPT, Kalrez®, Chemraz®, Silicone, and Food Grade.


Available in 2", 3" and 4" sizes, and in a variety of construction materials, including carbon steel, stainless steel, Hastelloy®, Alloy20®, Monel® and other exotics. 500 PSI Pressure Rating

Torsion Spring-Balance Units

790 Series - EZ Adjust
The OPW Engineered Systems 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 need to have the loading arm in the vertical position to make adjustments. In most cases, adjustments can be made from any position.

Torsion spring-balance units benefits and features


  • Affords users easy, precise spring balance adjustments
  • Guaranteed spring-balance performance
  • Safe performance
  • Eliminates labor-intensive steps  
Get A Quote


  • EZ one-nut adjustment
  • Wide range of motion
  • Fully adjustable upward/downward travel stops
  • Integral spring containment safety feature
  • No special tools required
  • Available in right-hand and left-hand configurations
  • Available with optional automatic engaging lockdown
  • 5-year warranty

A full range of spring-balance adjustments with the turn of a wrench, Guaranteed