Manual TRV25

6 VG5000 Series_11 2009
Valve - Actuators Combinations
The VG5000 series valves are designed to be used
with following actuators:
VA-7010 Series ON/OFF Actuator
Item Code Supply Voltage
VA-7010-8101
24 VAC
VA-7010-8103
230 VAC
See “VA-7010” Product Bulletin for more information.
VA-7040 Series Thermal Actuator
Item Code Supply voltage Action
VA-7040-21
24 VAC or 24 VDC ON/OFF
VA-7040-23
230 VAC ON/OFF
VA-7060-21
24 VAC Proportional
See “VA-704x” and “VA-706x” Product Bulletin for
more information.
VA-7450 Series Modulating Actuator
Item Code Features
VA-7450-1001
• Floating control
VA-7452-1001
• Proportional control
• Self-calibrating
• 0 to 10 VDC input signal
• Direct Acting
VA-7452-9001
• Proportional control
• Self-calibrating
• Selectable input signals for range
splitting (0 to 10, 0 to 5, 5 to 10 VDC).
• Selectable action: direct, reverse.
• Selectable combined flow characteristic
in combination with VG5 series
terminal unit valves
• Selectable Anti-sticking cycle
See “VA-7450” Product Bulletin for more information.
Operation
These valves are used for hot or cold water and for
water glycol mixtures up to 30%.
Note: These valves are intended to control
equipment under normal operating conditions.
Where failure or malfunction of the valves could
lead to an abnormal operating condition that could
cause personal injury or damage to the equipment
or other property, other devices (limit or safety
controls) or systems (alarm or supervisory systems)
intended to warn of or protect against failure or
malfunction of the valves must be incorporated into
and maintained as part of the control system.
When the stem of the valve is moved down by the
actuator against the return spring, it opens the N.C.
port or closes the N.O. port of a valve.
Supply
Return
3-way + NO ByPass
2-way NO, PDTC *)
3-way, mixing
Valve Type
2-way NC, PDTO *)
= flow
= no flow
Stem movement / flow
Actuator
stem down
Actuator
stem up
Actuator
stem down
Actuator
stem up
Actuator
stem down
Actuator
stem up
Actuator
stem down
Actuator
stem up
*) PDTC = Push down to close
PDTO = Push down to open