Azbil Actival VY5302C User manual

AB-6758
1
Specifications/Instructions
© 2007-2019 Azbil Corporation.All Rights Reserved.
ACTIVAL™
Two-Way Ball Valve with Flanged-End Connection
General
ACTIVAL Model VY5302C is a flanged-end connection
two-way valve. It provides a proportional control of
chilled/hot water of air handling units.
The valve body is made of bronze. The body rating is PN16.
It has optimal Cv value and size for controlling air handling
units.
This product needs to be integrated with the actuator Model
MY53X0AX to work.
Note: For information on wiring and other specifications of the
actuator Model MY53X0A, refer to Specifications/Instructions
of the actuator Model MY53X0A.
Features
The bronze body rated at PN16.
Easy to attach the actuator Model MY53X0A to the
product without needing any tool or adjustment.
Equal-percentage flow characteristic
IMPORTANT:
When you need to use a third-party controller for
controlling ACTIVAL, please consult with our sales
personnel before installing it.
Model Numbers and Cv Values
Model number Valve size Cv value Weight*1 Maximum pressure drop*2 Close-off rating
VY5302C0061 DN65 75 11 kg 0.35 MPa 0.5 MPa
VY5302C0081 DN80 110 12.5 kg 0.35 MPa 0.5 MPa
Note:
*1 Weight does not include the mass of the actuator.
*2 Do not apply negative pressure to the secondary (outlet) side of the valve.

AB-6758
2
Safety Precautions
Please read the instructions carefully and use the product
as specified.
Be sure to keep the manual on hand for later use.
Usage Restrictions
This product is targeted for general air conditioning. Do
not use this product in a situation where human life may
be affected. If this product is used in a clean room or a
place where reliability or control accuracy is particularly
required, please contact our sales representative. Azbil
Corporation will not bear any responsibility for the results
produced by the operators.
Warnings and Cautions
WARNING Alerts users that improper handling
may cause death or serious injury.
CAUTION Alerts users that improper handling
may cause minor injury or material
loss.
Signs

Alerts users to possible hazardous conditions
caused by erroneous operation or erroneous use.
The symbol inside indicates the specific type of
danger. (For example, the sign on the left warns of
the risk of electric shock.)

Notifies users that specific actions are prohibited
to prevent possible danger. The symbol inside 
graphically indicates the prohibited action. (For
example, the sign on the left means that
disassembly is prohibited.)

Instructs users to carry out a specific obligatory
action to prevent possible danger. The symbol
inside graphically indicates the actual action to
be carried out. (For example, the sign on the left
indicates general instructions.)

CAUTION
Do not freeze this product.
Doing so may damage the valve body and cause
leakage.

When piping this product, be sure there is no
foreign matter in the pipes.
If foreign matter remains in the pipes, the product
may break down.

Install and use this product according to the
specifications stated in this manual.
Failure to do so may cause device failure.

When installing this product, hold it in the proper
position and securely fasten it to the pipes.
Excessive tightening or improper installation
position may damage the valve.

After installation, make sure no fluid leaks from the
valve-pipe connections.
Improper piping may cause fluid leakage outside
of the valve.
Do not put a load or weight on this product.
Doing so may damage the product.

Do not carelessly touch this product when it is
used to control hot water.
Doing so may result in burns, because the product
reaches a high temperature.

AB-6758
3
Specifications
Item Specifications
Type Flanged-end connection two-way ball valve
The actuator to be combined Model MY53X0A
Pressure rating PN16 (Maximum working pressure: 1.6 MPa)
Materials Valve body Cast bronze equivalent to: CuAn5An5Pb5-C (DIN EN1982)
CAC406 (JIS)
Flange Electro-galvanized carbon steel
Retainer Electro-galvanized cast steel
Ball Cast stainless steel
Stem Stainless steel
Seat ring Polytetrafluoroethylene (PTFE)
End connection Flanged-end connection: Raised face (RF)
Fluid Chilled/hot water, brine (ethylene glycol solution, 50 wt.% max.)
Fluid temperature 0°C to 80°C (non-freezing)
Flow characteristic Equal-percentage characteristics
Rangeability 30 : 1
Seat leakage 0.01% of rated Cv value
Factory preset position Fully open
Installation locations Indoor / outdoor
Note: Salt air, corrosive gas, flammable gas, and organic solvent must be avoided.
Mounting position Refer to ■“Installation,” ●“Mounting position.”
Dimensions
Model number L L1 H DCt h N Weight*
VY5302C0061 190 95 100.5 185 145 21 19 4 11 kg
VY5302C0081 203 101.5 100.5 200 160 21 19 8 12.5 kg
Note: Weight does not include the mass of the assembled actuator.
Figure 1 External Dimensions (mm): Size Including the Actuator
L1
C
t
D
N h
Min. 120 Min. 120
Min. 400
91
H
L

AB-6758
4
Installation
CAUTION
Do not freeze this product.
Doing so may damage the valve body and cause leakage.
When piping this product, be sure there is no foreign matter in the pipes.
If foreign matter remains in the pipes, the product may break down.
Install and use this product according to the specifications stated in this manual.
Failure to do so may cause device failure.
IMPORTANT:
●Carefully joint the flange on the pipe side with the flange on the valve side and securely fasten them. Failure
to do so may result in a misalignment of the joint. Once they are joined in a wrong position, it will be hard to
modify the joint.
●Do not change the mounting position of the valve while it is fastened to the piping. Changing the orientation by
turning the valve may cause leakage.
Do not change the orientation of the valve before removing the valve from the piping.
Installation precautions
To remove foreign substances, install a strainer on the inflow side of each valve.
In case where a strainer cannot be installed on the inflow side of the valves, install it on the pipe diverting sections.
Install the valve so that the flow direction of process fluid agrees with the arrow indicated on the valve body.
As shown in the figure below, align the center of the valve and the center of the pipe in connecting them.
Figure 2 Valve Installation
First, use the bolts and nuts for providing a temporary joint of the valve flange and the pipe flange. Then gradually tighten
pairs of kitty-cornered bolts and nuts with even force to fasten the valve flange and the pipe flange together. (See Bolt/nut
tightening order in Figure 2)
Bolt/nut tightening order
1
4
3
2

AB-6758
5
Installation location
Install ACTIVAL (the valve and the actuator) in a position that allows an easy access for maintenance and inspection.
Figure 1 shows the minimum clearance required for maintenance and inspection. When installing the valve and the
actuator in a ceiling space, provide an access panel within the 50 cm radius of the valve and the actuator. Also, make sure
to place a drain pan under the valve.
Do not install the product nearby a steam coil or a hot-water (in high temperature) coil. High heat radiation may result in an
actuator malfunction.
Do not mount the valve on a pipe that is exposed to water hammering or may have slugs accumulated within.
Mounting position
The valve with the actuator assembled can be mounted in any orientation ranging from upright to sideways (90° tilted). The
valve must be installed with its actuator vertically positioned above the valve body. Outdoors, however, it must always be
installed upright.
Figure 3 Mounting position
Piping
CAUTION
When installing this product, hold it in the proper position and securely fasten it to the pipes.
Excessive tightening or improper installation position may damage the valve.
Install a bypass pipe and gate valves on the inflow, outflow, and bypass sides. Also, install a strainer on the inflow side.
When installing the valve to pipes, do not allow any object, such as chips, to get inside a pipe or valve. Valve cannot fully
closes, or the valve seat may get damaged causing fluid leakage, due to a foreign object jammed inside the valve.
When piping, apply to the pipe joints the right quantity of sealing materials such as solidifying liquid and tape in order not to
allow excess materials to flow into the valve. Foreign objects jammed in the valve may cause the valve failing to fully close
or damage to the valve seat, resulting in fluid leakage.
Before activating the valve and actuator, flush the pipes (with the valve and actuator installed) at the maximum flow rate to
remove all the foreign substances. Fully open (in 100 % position) the valve to flush. Factory preset position: 100 %
CAUTION
After installation, make sure no fluid leaks from the valve-pipe connections.
Improper piping may cause fluid leakage outside of the valve.
Do not put a load or weight on this product.
Doing so may damage the product.
Heat Insulation
Do not apply heat insulation to the joint surface. Apply as shown in Figure 4 so that it does not cover the joint to the actuator.
Figure 4 Heat Insulation
Correct example Incorrect example
Heat
insulating
material
Heat
insulating
material
Correct heat insulation Wrong heat insulation
Joint
surface
Joint
surface

AB-6758
6
Assembling the Valve with the Actuator Model MY5302C
IMPORTANT:
Do not use any other actuator than those specially made for this valve.
The actuator can be horizontally rotated every 90 degrees to fit into the valve mounting position. Refer to
Figure 5 and make sure that the actuator and the vale look as shown (fully open position) before shipping.
- Actuator: Indicator/manual lever points at 100.
- Valve: An arrow on the top of the stem points at 100.
Align the hole on the side of the stem should be aligned with the tip at the joint surface.
(See “a” in Figure 5)
Set both the actuator and the valve in 100 % position (full open) when changing the mounting position. If the
valve in 0% position is assembled with the actuator in 100 % position, the actuator puts torque on the closed
valve, and the gear of the actuator gets damaged.
Figure 5 Mounting the Actuator onto the Valve
Mounting procedure
(1) Manually turn the indicator/manual lever of the actuator to "100" with the lever release button pressed.
Figure 6 Indicator/Manual Lever at 100% Position (Full Open)
(2) Move the lock lever to the right end as shown in Figure 7.
Figure 7 Lock Lever (Released)
Press
Turn
Turn
Lock lever
Actuator
Model MY53X0A
Valve
Model VY5302C
Press
Stem a
Lever release
button
Indicator/
manual lever
リリース状態
In a released position

AB-6758
7
(3) Make sure that the arrow on the top of the valve stem points at "100". When the valve is fully open, a hole on the side of the
stem faces in the direction of the tip of the valve joint surface (with the actuator). ("a" in Figure 5)
Figure 8 Valve Installation
(4) Assemble the actuator Model MY53X0A with the valve Model VY5302C. Engage the four pins of the actuator with the
mating holes on the valve joint surface.
(5) Move the lock lever to the left end (a groove as an indication) as shown in Figure 9.
Figure 9 Locked Position
Parts Indication and Materials
Figure 10 Parts Names and Materials
No. Name Material
1 Body Bronze (equivalent to: CuAn5An5Pb5-C (DIN EN1982)
CAC406 (JIS)
2 Retainer Electro-galvanized cast steel
3 Seat Ring PTFE
4 Ball Cast stainless steel
5 Stem Stainless steel
6 Seat Ring NBR
7 Flange Electro-galvanized carbon steel
Stem
Joint surface
1
5
6
7
2
4 3
Groove
In a locked
position

AB-6758
8
Flow Characteristic
Figure 11 Flow Characteristic Diagram
25
50 75
0100
50
25
75
100
Opening (%)
Cv value (%)

AB-6758
9
Maintenance

CAUTION
Do not put a load or weight on this product.
Doing so may damage the product.
Do not carelessly touch this product when it is used to control hot water.
Doing so may result in burns, because the product reaches a high temperature.
Inspect the product according to Table 1.
Manually open/close the product at least once a month if it is left in an inactive state for a long period of time after
installation.
Visually inspect the product (e.g. fluid leakage) every six months.
If any of the problems described in Table 2 is found, take corresponding actions shown in the table.
If the problem is not solved by the corresponding actions, please contact Azbil Corporation.
Table 1 Inspection Items and Details
Inspection Item Inspection Interval Inspection detail
Visual inspection 6 months Loosened lock lever
Valve and actuator damage
Fluid leakage from the gland/pipe joint.
Operating status 6 months Unstable open/close operation
Abnormal noise and vibration
Routine inspection Any time Abnormal noise and vibration
Unstable open/close operation
Valve hunting
Table 2 Troubleshooting
Problem Part/s to check Action
Valve doesn't operate smoothly.
Valve stops halfway.
Valve does not operate at all.
Conditions of power and the input signal
applied to the actuator.
Wiring condition/disconnected wires of the
actuator
Jammed foreign substances
Check the power supply. Check the connected
controller.
Check the wiring.
Remove foreign substances by manually opening
and closing the valve.
Fluid leaks when the assembled actuator
fully closes the valve.
Refer to the section Assembling the
valve with the actuator Model MY5302C in
order to reconfirm the mounting
procedure.
Redo mounting by the mounting procedure
described in this document.
Valve hunting Secondary pressure condition, differential
pressure condition
Control stability
Reset and adjust the valve inlet/outlet pressure.
Modify the control parameters/PID setting of the
controller that is connected to the assembled actuator.
The auxiliary switch of the assembled
actuator does not work.
Auxiliary switch (cam switch) condition
Wiring condition/disconnected wires of the
actuator
Redo the cam switch setting.
Check the wiring.
Joint part of the valve and the actuator
vibrates or produces an abnormal sound.
Lock lever condition of the actuator
Yoke damage
Lock the lock lever.
Consult with our sales/service personnel.
Noise of water flowing

Consult with our sales/service personnel.
The assembled actuator in operation
produces abnormal sound.

Consult with our sales/service personnel.
Disposal
Dispose of this product as industrial waste in accordance with your local regulations.
Do not reuse all or any part of the product.

AB-6758
10
This blank page is added for page layout purposes.

AB-6758
11
This blank page is added for page layout purposes.

AB-6758
ACTIVAL is a trademark of Azbil Corporation in Japan and in other countries.
Specifications are subject to change without notice.
Building Systems Company
https://www.azbil.com/
Rev. 3.0 Dec. 2019 AB-6758
12