Setting Pressures

The initial force applied to the strata is known as “setting pressure”. Once this pressure level is achieved the hydraulic supply is removed but the pressure is retained in the support legs by means of a non return valve. A guaranteed setting pressure, also known as Positive Setting Pressure, insures the preset full pump pressure is being maintained on each support unit along the face. This is achieved by the incorporation of Positive Set Circuit in the hydraulic circuit of the support system.

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