In another aspect of the present invention, a multiple fluid pressure control system is disclosed having a fluid reservoir, a source of pressurized fluid connected to the fluid reservoir, a fluid supply line including a downstream conduit and an upstream conduit wherein the upstream conduit is connected between the source and the downstream conduit, and {TAIL ~ a flow restricting means} disposed between the upstream and downstream conduits for restricting fluid flow in the fluid supply line and thereby establishing {HEAD ~ a preselected difference} in fluid pressures in the upstream and downstream conduits 
In another aspect of the present invention , a multiple fluid pressure control system is disclosed having a fluid reservoir , a source of pressurized fluid connected to the fluid reservoir , a fluid supply line including a downstream conduit and an upstream conduit wherein the upstream conduit is connected between the source and the downstream conduit , and { TAIL ~ a flow restricting means } disposed between the upstream and downstream conduits for restricting fluid flow in the fluid supply line and thereby establishing { HEAD ~ a preselected difference } in fluid pressures in the upstream and downstream conduits
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