MTS Model 286-20 Confining Pressure Intensifier - Manual (Page 21)

Control Panel
286.20 Pressure Intensifier Operation 21
3 Air Direction Two position hand-valve. Position “A” enables air to escape from the
triaxial cell to the reservoir when filling the triaxial cell with confining fluid.
Position “B” allows compressed air to force confining fluid from the triaxial
cell to the reservoir, when emptying fluid from the triaxial cell.
(If the valve handle is positioned mid-way between “A” and “B,” the valve
is turned off.)
4 Confining Fluid
Input Adjustable hand-valve. Turning the valve counterclockwise toward Open
allows fluid to flow into or out of the triaxial cell, or it allows cell fluid to be
pressurized by the pressure intensifier. Turning the valve fully clockwise to
Close closes the input to the triaxial cell.
5 Fluid Direction Three position hand valve.
Position “A” allows fluid to flow from the reservoir to the pressure
intensifier or triaxial cell.
Position “B” allows fluid to flow from the reservoir to an external container
when draining the reservoir.
Position “C” allows the air-driven hydraulic pump to pump fluid from an
external container into the reservoir.
6 Fluid Transfer Pump
Control Adjustable valve allows compressed air to operate the air-driven hydraulic
pump. (The pump is used only when transferring fluid from one location to
another, not while pressurizing the confining fluid.)
7 Reservoir Fill Adjustable hand-valve. Turning the valve counterclockwise toward Open
allows confining fluid to flow from the triaxial cell to the reservoir when
emptying the cell, or from an external container to the reservoir when filling
the reservoir. The valve must be closed before pressurizing the triaxial cell.
8 Intensifier Fill Adjustable hand-valve. Turning the valve counterclockwise toward Open
allows confining fluid to flow from the reservoir to the pressure intensifier.
The valve must be closed before pressurizing the triaxial cell.