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LOADING ARMS
OPW - Bottom Loaders

Downloadable PDF product files:
- bottom_loaders__59ko.pdf
- bottom_loaders_api_rp_1004__104ko.pdf
- vpus_models__19ko.pdf

OPW Bottom Loading Arms
• Proven Experience in Transfer Applications
• Full Line of Standard and Custom Systems
• Quality Control for Dependable Operation
• Innovative Products Designed for Safety
• Rely on OPW Service and Support

OPW 790 Series (EZ Adjust)
See how it works.
• EZ one-nut adjustment
• Loading Arm no longer has to be in vertical position to make an adjustment
• Spring provides over 100 degrees of travel
• Fully adjustable upward/downward travel stops
• Integral spring containment safety feature

OPW Bottom Loading Coupler
• 300 PSI (20 bar) Pressure Rating
• Unique High-Retention Beveled Nose
Seal for Superior Sealing 
• Easy and Inexpensive to Maintain
• Designed to Effectively Handle all Fuels
• Easy-to-Change Nose Seal
• Built-in Roller Bearing on Operating Lever
• Large, Convenient Grasp Handles
• Durable, Reliable and Simple to Use

Unsupported Boom Type Bottom Loader

Designed to provide flexible long range operation without the use of hose, this heavy duty configuration is both reliable and easy to use. A minimum of five swivel planes of rotation offer complete flexibility in making tight connections for loading and unloading rail cars and tank trucks, and servicing aviation refuelers. The outboard swivel and arm adjusts for any changes in elevation or tilting that may result as the vehicle is loaded or unloaded.

The unsupported boom type bottom loader is extremely versatile and many variations are possible. It can be equipped with dry disconnect coupler,  union, quick coupling, or other customer specified end fitting to make connections on the side, athe the rear, or underneath the vehicle. The intermediate swivel is often inverted to achieve the low profile and clearances needed to connect to the underside of a rail car.

Typically installed at or near ground level, arms of varying lengths can be mounted on staggered risers to achieve crossover and neat, compact storage of multiple arms in a confined space.

Available in 2", 3", 4", and 6" sizes in steel, stainless steel, aluminium, and specialty alloys and choice of flanged, threaded, or all welded construction.

Counterweighted Hose Loader

Installation and operation is simple and efficient with OPW counterweighted hose loaders. Adjustable counterweights mounted on a pair of horizontal rails are simply moved until the desired balance point is located. This design provides for efficient handling and coupling to the tank truck adaptor.

Available in 4" and 6" X 4" sizes, this popular hose loader features a flange x flange base joint for reliable performance and ease of maintenance. A heavy-duty split flange base swivel (pg. 17) is standard on 4" arms. Construction is carbon steel with composite drop hose for maximum flexibility and easy handling. Braided stainless steel hose is also available. Outboard swivel, spacer spool, and API coupler are aluminum.

Standard horizontal reach is 114" to fully cover the API RP-1004 bottom loading envelope with up to four loading arms spaced 18" apart. Reaches of 66", 78", 90" and 102" are also available, but full coverage of the API envelope may require moving the truck. Each loader should be mounted successively higher, 16" stagger recommended, to provide maximum crossover capability for efficient simultaneous compartment loading. Minimum recommended drop hose length is approximately 60".

Spring Balanced Hose Loader