HELLER SYSTEM

Suction pumps; condensing installations; condensate separators; axial fan condensers; centrifugal fan condensers; refrigerant recovery pumps; centrifugal pumps; water separators; pressure reducers as parts of machines; pressure regulators [parts of machines]; de-aerators for feedwater; steam traps; steam condensers [parts of machines]; filters being parts of machines or engines; expansion tanks [parts of machines]; governors; heat exchangers [parts of machines].

Heat exchangers, other than parts of machines; cooling installations; heat accumulators; heat sinks for use in ventilating apparatus; cooling installations for fluids; air cooling apparatus; coils [parts of distilling, heating or cooling installations]; heat exchangers for the removal of condensate; pipe line cocks; taps; taps for the control of water flow; flues; heat exchangers for the removal of flue gases; flues for ventilating apparatus; fittings for the draining of water; regulatory fittings for water pipes; safety accessories for water or gas apparatus and pipes; heat regenerators; air filtering installations; dampers for ventilating installations.

Architecture; architectural consultancy; technical research; technical project planning; quality checking and testing; technological consultancy; computer programming; computer system analysis.