THE MANUFACTURING PROCESS

HamiltonJet waterjets are manufactured at the CWF Hamilton & Co factory in Christchurch, New Zealand. The factory is dedicated solely to the manufacture of waterjets and control systems, with the majority of components engineered inhouse.

The basic manufacturing process is:

• The waterjet housings and other aluminium components are sand cast, then go through a waterblast and fettle process before being machined on dedicated CNC machine centres. They are then washed and painted.

• Stainless steel components such as mainshafts and couplings are turned and milled on CNC machines.

• Impellers are cast from molten stainless steel, before being machined, balanced, trimmed and pitched to a specific “impeller rating”.

• The waterjet controls systems, including hydraulic and electronic components, are also CNC machined, painted and assembled.

• All parts are then dispatched to the final assembly area where they are assembled and pressure tested, the control system is installed and tested, a final quality inspection is conducted, and they are then boxed up and shipped to the customer.