Auto control valve for tippers
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• By introducing a single Rubery Owen control valve, Finnish manufacturer of lorry tippers, Nummi Oy, of Pernio, has achieved near automation.
Until recently the company — which has been producing tippers for 25 years — was fitting an expensive mechanical device for controlling the movement of the telescopic cylinder mounted to the tailboard assembly. This has now been replaced with an Owen Husco 5000 single-spool valve complete with automatic kick-out, which senses a build-Up in pressure.
Once the telescopic cylinder has reached the top of its stroke, a pressure build-up will automatically return the spool to neutral positionwithout any manual interference. This means that the driver can now select the spool — in some eases pneumatically, and in others manually — and walk away; the valve automatically doing the work.