Azbil Actival VY5302C Manuale utente

AB-6758

Specifications/Instructions

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

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

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

C

D

N h

Min. 120 Min. 120

Min. 400

AB-6758

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

AB-6758

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

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

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

(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

4 3

Groove

In a locked

position

AB-6758

Flow Characteristic

Figure 11 Flow Characteristic Diagram

50 75

0100

100

Opening (%)

Cv value (%)

AB-6758

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

This blank page is added for page layout purposes.

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