The operating rods shall be insulating and shall be manufactured from glass reinforced epoxy resin. The operating heads shall be in aluminium alloy casting, non-brittle in operation.
The operating rod shall be extensible and shall consist of 6No. Interlocking sections of 1.2m X 40mm diameter. Each.
All sections shall employ copper alloy press buttons to ensure positive jointing.
The assembly shall be rigid, strong, dimensionally stable, resistant to chemical action and light in weight.
The operating rod, its couplings and operating heads shall withstand the bending and torsion stresses produced by the load and the tightening forces. The deflection shall be minimized to avoid uncontrollable movements.