AB-7350-U
4
IMPORTANT:
Install the product to a pipe so that they are electrically connected at the same potential. If the valve and the
pipe are electrically isolated, noise might be generated, causing incorrect measurement and control of flow.
When installing the product with flange gasket, do not use the rubber gasket or the gasket that goes inside the
pipe. Doing so might cause incorrect measurement and control of flow.
This product is applicable only to chilled/hot water control. If the product is used to control any other medium
such as brine or air, flow rate cannot be measured or controlled.
Install the valve so that the flow direction of process fluid agrees with the arrow indicated on the valve body. If
the flow direction is opposite to the arrow, correct measurement and control of flow is not assured.
Do not loosen the yoke fixing screws or the actuator fixing screws. Loose fixing screws lower flow measuring
accuracy. Note that the actuator mounting position onto the valve cannot be changed.
Flow measuring accuracy in the subsection
Measuring range and accuracy
shown later is for the valve
sensor measuring 44.6 to 62.6
F (7 to 17 °C) and 113 to 149
F (45 to 65 °C) ranges, 29 to 261 psig pipe
pressure, and 4.35 to 43.5 psig differential pressure. Without these ranges, the flow rate measuring accuracy
might decrease.
To keep flow measuring accuracy, control the quality of process fluid (water), and do not allow rust or foreign
object inside the valve. Rust or foreign object inside the valve lowers flow measuring accuracy.
Thermally insulate the valve, and do not allow the process fluid to freeze. Frozen process fluid around the valve
sensor might damage the valve sensor and cause error output.
Model Numbers
Model FVY5137J is the model for the valve and actuator integrated into a single unit.
The model number label is attached to the yoke.
Base
model
number
Actuator/valve Actuator
Valve
Fixed
Description
Ctrl
signal
Rating/
material
Type Fixed
Size/
Cv value
FVY51
Motorized two-way valve with flanged-end connection
(Flow measuring and controlling functioned)
3
4 to 20 mA DC input, pulse output, RS-485 communication (Modbus
protocol)
7
145 psig / Gray cast iron for chilled/hot water
J
NEMA 4X and IEC IP54 protected and standard torque type actuator
with terminal block
00
Fixed
41
1
1
/
2
” / 25 Cv
42
1
1
/
2
” / 40 Cv
51
2” / 65 Cv
61
2
1
/
2
” / 95 Cv
81
3” / 125 Cv
-S03
－
* This product was designed and manufactured conforming to the ISO (International Organization for Standardization, PN10/GG-20).
