Brochure

VG1000 Series Forged Brass Ball Valves Product Bulletin 35
Electric Actuator Control Signal Action
Two-way VG1000 Series Ball Valves are fully open
when the electric actuator is fully Counterclockwise
(CCW) and fully closed when the electric actuator is
fully Clockwise (CW). For three-way valves, the Port A
and common port are fully open when the electric
actuator is fully CCW, as shown in Figure 5. Port B and
common port are fully open when the actuator is fully
CW, as shown in Figure 6.
Note: VG1841 and VG1845 three-way ball valves
have a different port configuration (as shown in
Figure 5 and Figure 6) from the older VG1644 Series
three-way ball valves (Figure 7), and you must change
the piping to convert them to the new series of valves.
For non-spring return and spring-to-open proportional
control models in the direct-acting mode, a minimum
control signal drives the electric actuator to the fully
CCW position, whereas a maximum control signal
drives the electric actuator to the fully CW position.
For spring-to-close proportional control models in the
direct-acting mode, a minimum control signal drives the
electric actuator to the fully CW position, whereas a
maximum control signal drives the electric actuator to
the fully CCW position.
For non-spring return floating or on/off (floating) control
models, a control signal to Terminal 2 (or wire 2) of a
VA9104 or an M91xx Series Actuator drives the electric
actuator to the fully CW position. Likewise, a control
signal to Terminal 3 (or wire 3) of a VA9104 or an
M91xx Series Actuator drives the electric actuator to
the fully CCW position.
A control signal to Wire 3 of side A mounted (away
from the valve) VA9203 or VA9208 Series actuated
spring-to-open floating control valve assembly drives
the electric actuator to the fully CW position. Likewise,
a control signal to Wire 4 of a floating CCW-face
VA9203 Series or VA9208 Series Actuator, or removal
of the control signal from Wire 3 of an on/off CCW-face
VA9203 Series or VA9208 Series actuated spring-to-
open valve assembly, drives the electric actuator to the
fully CCW position.
IMPORTANT: The VG1000 Series Valves are
intended to control saturated steam, hot water, and
chilled water flow under normal equipment operating
conditions. Where failure or malfunction of the
VG1000 Series Valve could lead to personal injury
or property damage to the controlled equipment or
other property, additional precautions must be
designed into the system. Incorporate and maintain
other devices such as supervisory or alarm systems
or safety or limit controls, intended to warn of or
protect against failure or malfunction of the VG1000
Series Valve.
Figure 5: VG1841 or VG1845 Series
Three-Way Ball Valve
(Port A Connected to Port C)
F
I
G
:
V
G
4
1
4
5
_
3
w
a
y
A
C
Port A
Coil
Port C
Common
Port B Bypass
Figure 6: VG1841 or VG1845 Series
Three-Way Ball Valve
(Port B Connected to Port C)
Port A
Coil
Port C
Common
Port B Bypass
F
I
G
:
V
G
4
1
4
5
_
3
w
a
y
B
C
Figure 7: Top View of VG1644 Series
Three-Way Ball Valve (Actuator Fully CCW)
Common
Port
Normally
Open Port
Normally
Closed Port
F
I
G
:
V
G
1
6
4
4
_
C
C
W