The standard 0 to 15 ton manual hydraulic press P/N GS15011 can be operated to apply up to a 15 ton maximum load. On the press itself there is a pressure relief valve (located under the load gauge) which can be set to “vent off” any excess pressure in the pumping system such that a maximum load setting can be selected on the press. This maximum load is indicated on the standard 0 to 15 ton load gauge. Hence, if this pressure relief valve is adjusted accordingly, then it is possible to build up a pressure that corresponds to e.g. a maximum of 5 tons load as indicated at the 15 ton load gauge.
Any further pulls on the pump handle of the press results in this excess pressure being vented off at the pressure release valve.