Section 5: Operation; Hydraulic Power System; Reservoir; Main Components - Emerson Bettis EHO Installation And Operation Manual

Installation and Operation Manual
Part Number: VA001-507-32, Rev. 1

Section 5: Operation

After initial start-up and commissioning procedures have been accomplished, the Bettis
EHO Actuator provides a simple self-contained means of operation for a quarter turn
valve. In case of a power failure the actuator can be operated by the use of the supplied
hand pump..
5.1

Hydraulic Power System

The Hydraulic System, powered by an electric motor, contains manifold based valves
and controls with minimal piping. The system will drive the actuator to the OPEN/CLOSE
position as selected by operation personnel.
5.2

Reservoir

The Bettis Self-contained Electro Hydraulic Actuator includes a fluid reservoir sized to
contain the hydraulic fluid required to operate the actuator cylinder and controls. The
standard unit has a sight gauge to ensure presence of fluid and a dipstick measure
attached to the fill/breather cap to more accurately gauge the quantity of fluid
contained.
5.3

Main Components

Figure 23
(Q) Hydraulic Pressure Gauge
(R) Pressure Switch
(S) Pressure Transmitter(Optional)
(T) Check Valve
(U) Relief Valve
(V) Adjustable Flow Controls
(W) Bettis G-series Double Acting Actuator
(J) Opening Solenoid
(K) Closing Solenoid
(X) Shuttle Valve(Optional)
(Y) Hydraulic Pump
(Z) Electric Motor
(AA) Suction Strainer
(I) Fluid Reservoir
(L) Hand Pump
(M) Hand Pump Selection Valves
Operation
Basic Double Acting
R
W
Y
Z
L
M M
Section 5: Operation
August 2016
Q
S
T
U
V
J K
X
I
AA
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