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Custom Loading Arms

Liquip manufactures loading arms for a wide range of liquid transfer applications. Nearly any application currently using a hose is a potential loading arm application.

Aside from standard loading arm applications listed, some of the applications using Liquip loading arms include:

  • Liquid sugar syrup loading of rail cars.
  • Waster water unloading of rail cars.
  • Rail car locomotive refuelling.
  • Mine service vehicle loading.
  • Aviation refueller loading.
  • Fuel barge loading and unloading.

Liquip can design a loading arm to your specification. With an already extensive range, we are able to respond quickly to specific and specialised requests.

Using the specialised gas strut design that Liquip is renowned for, we can tailor design an arm to suit your operational requirements.

Please contact Liquip if you have any questions or enquiries regarding your application.

Technical Information

Chemical Compatibility
Liquip loading arms are available in a range of materials and seals to suit various chemicals and liquids. 
Liquip reference industry standard chemical compatibility charts when deciding compatibility of materials and physically test product compability with seal and gasket material. 

If no doubt, consult Liquip and if available provide your recommendations and material safety datasheet for specific products.

Thermal Relief
Over pressuring of the loading arm can be caused by thermal expansion of the product contained in the loading arm pipe work, i.e. the temperature of the static product within the loading arm is higher than the ambient temperature. This is caused as a result of the sun heating the pipes and product; as the temperature rises so too does the pressure within the loading arm. This increase in pressure, if severe enough can cause seals and gaskets to rupture and can damaged couplers. Therefore, the recommend an operating static pressure of most loading arms is 1,000kPa.

Liquip recommend that you consult your company policy on thermal pressure relief and put in place a system to prevent over-pressurisation through thermal pressure backup.

Fuel Velocity
Loading rates differ between installations. It is always advantageous to maximise loading flow rates in order to minimise loading time. However, ensure that the fuel velocity at any flow rate, does not exceed the maximum safe flow rate.

Excessive velocity increases the generation of dangerous static electricity and should be considered. It may be wiser to increase the size of the loading arm to achieve the same flow rate, thereby minimising static generation.


Ordering Information

To ensure each loading arm that leaves our factory operates to its maximum potential, Liquip requests that the dimensional details and designs of each installation be checked by our design department. Design survey sheets are available from Liquip and Liquip distributors .

The following is the information needed to recommend an arm to suit your requirements:

  1. Top loading or bottom loading Top - long reach or pantograph Bottom - overhead or low profile
  2. Top feed or bottom feed (liquid is supplied from above or below)
  3. Left hand or right hand mechanism
  4. Product to be conveyed
  5. Temperature of the product to be conveyed
  6. Flow rate required
  7. Preferred diameter
  8. Material of construction
  9. Operating pressure
  10. Operating temperature
  11. Maximum temperature
  12. Mounting connection
  13. Coupler or other connection

To help maximise the productivity of your loading arms and thus provide the best value for money, it is important that Liquip be consulted early in the planning stage of the bulk liquid terminal or loading rack . The loading arm is the last component of an expensive supply chain so it is important not to compromise this important asset .


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