Compressed Gas Top Loading /Unloading Arms

WSI range of Top loading arms are specifically engineered to handle the unique nature of liquid compressed gasses and vapors transported in tank trucks or railcars, or trans-loaded between the two.

Up to #300 rated with minimal flanged connections in carbon steel and stainless steel to handle refined products such as LPG, Propane, Butane, Isobutene, Anhydrous Ammonia, LNG as well as course unrefined NGL’s.

Typical size is 2” but larger 3” and 4” are available for specialist applications. For longer reach applications a 3” arm is usually better suited for structural strength with a 2” connection point to the tank truck or railcar.

Compressed Gas Top Loading /Unloading Arms

Connection devises will vary with different applications. Each WSI compressed gas loading/unloading arm is designed to work with either, dry-gas couplers and adapters, hammer unions or lap flange connection points. Outboard swivel joints are incorporated in to each loading arm with multiple flow control and connection options. Isolation valves, breakaway devices and remote shut down devices can all be incorporated in to each configuration of top or bottom, loading or unloading arm.

All loading/unloading arms are offered in standard length configurations or custom sized to suit the exact application

See Compressed Gas Loading Arm Options tab for optional equipment such as vapor transfer combination arms, ground verification systems, parking adapters and position sensors etc.

All WSI loading arms are designed and manufactured within our certified ISO quality management systems and in line with ASME B31.3 Process Piping code. All loading arms and swivel joint assemblies are100% hydro tested. Dye penetrant testing and Radiography carried out to required specifications. Full manufacturing documentation and MTR’s can provided with each loading arm. Standard paint finish for carbon steel is shot blasting to SA 2 ½ and Poly Urethane RAL 7035 paint finish. Specific painting specifications also provided. If required, TPI will be provided