Hose & Hose Assembly

Ref: MDG41 –

“Only competent people should carry out hose assembly fabrication. Hose assembly fabrication should be in accordance with the hose and hose end manufacturer’s assembly instructions.”

Hardy Spicer is a quality assured to AS/NZS ISO 9001:2015 by Lloyds Quality Register. The initial certification was gained in May 1994 and the current certificate is valid through to April 2021.

All processes associated with the sourcing, storing, manufacture and testing of hose assemblies are covered in our QA procedures.

In addition to Hardy Spicer’s internal procedures and training, all relevant Hardy Spicer personnel have undertaken the Gates Safe Hydraulics training program which covers:

  • Safety issues associated with hydraulic hoses
  • Elements of an effective preventative maintenance program
  • Safe selection of appropriate hose types
  • Proper selection of hose fittings
  • Correct hose assembly
  • Installation of hose assemblies
  • Fault finding and troubleshooting guide

The Gates Safe Hydraulics program is also available, to our customers.

Ref: MDG41 –

“The hose assembly should be rated by the lowest pressure component in the hose assembly, refer Appendix 9.8

An often overlooked aspect of a hose assembly’s performance is the mismatch between component capabilities.  In many cases a hose to say SAE100R15 standard with a 6000psi maximum working pressure may be fitted with a swivel style fitting which may only have a safe working pressure of say 3000psi. It is important to realise in such a case, as outlined above, the maximum safe working pressure of the hose assembly is only 3000psi.

To overcome this issue Gates has specifically designed its range of fittings’ thread terminations to match the performance of the matched hose types.  The implementation of Full-Torque swivel nuts eliminates the performance limitations inherent with thrust wire or crimped nut styles favoured by many of our competitors.

An added bonus of the full backed swivel nut is the elimination of one of the most common causes of hydraulic leaks in a cracked coupling nut or seat due to over-torquing by a strong-armed worker. The Full-Torque Nut couplings are stronger and more durable than traditional staked-nut fittings that are prone to cracking when over-torqued.

Of particular note is the range of Global Spiral fittings for the Gates 4 and 6 spiral hose types for pressures up to 6000psi. In this range of fittings most female swivel nut (e.g. JIC, ORFS, BSPP) and SAE code 62 fittings are rated to 6000psi. With the Gates GlobalSpiral fittings our customers can be sure that the complete hose assembly is rated to match the maximum working pressure of the hose.