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6

AB-7489-U

 

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Dimensions

Model number

Valve size

H

H1

L

L1

t

C

D

φh

N

Weight 

(lb)

VY51_ _J002_

1”

8.98

3.54

7.24

2.36

0.44

3.15

4.33

0.63

4

16.3

VY51_ _J004_

1½”

9.49

4.06

6.5

3.25

0.71

3.91

4.92

0.63

4

20.9

VY51_ _J005_

2”

9.65

4.21

7.01

3.5

0.79

4.72

5.91

0.75

4

25.4

VY51_ _J006_

2½”

10.31

4.88

7.48

3.54

0.79

5.51

7.09

0.75

4

35.3

VY51_ _J008_

3”

10.35

4.92

7.99

3.94

0.87

6

7.48

0.75

4

44.1

Figure 1.  Dimensions and maintenance clearance: Model VY51_FJ/VY51_GJ

 

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Parts Identification

Figure 2.  Parts identification

Note:

Leave a clearance of 4" (100 mm) if you do not open the top cover

 (to set the selector switches after the ACTIVAL is installed). 

2.76" 

(70 mm)

5.43"

(138 mm)

H

H1

L1

L

t

C Dia.

D Dia.

Min. 20" (508 mm)

 (See Note.)

Min. 12"

(305 mm)

3.23"

(82 mm)

3.35"

(85 mm)

N × h Dia.

2.76" 

(70 mm)

Flow direction

Top cover

Terminal cover

Top cover

Knockout hole

Terminal cover

Yoke

Valve body

Valve body

Pointer

Joint

O-ring

Packing
Stem

Seat ring

Spring

Plug

: Heat insulation

Gland

Model number

Summary of Contents for ACTIVAL VY51 Series

Page 1: ...lable 4 20 mA DC input 2 10 V DC input Valve for chilled hot water control and for steam control applicable to high differential pressure large Cv value high rangeability and low leakage Durable actua...

Page 2: ...ency of use as basic parameters The recommended design life of this product is 10 years The recommended design life assumes that maintenance such as replacement of the limited life parts is carried ou...

Page 3: ...e UL50E Type 4 Enclosure 2 Only the actuator is certified with the UL cUL above CAUTION After installation make sure no fluid leaks from the valve pipe connections Improper piping may cause fluid leak...

Page 4: ...ristics Equal percentage Rangeability 100 1 Seat leakage Class IV 0 01 of rated Cv value Paint Gray Actuator to be combined Integrated with the valve Actuator specifications Item Specification Power s...

Page 5: ...t must be avoided Outdoor Use the outdoor cover etc to be ordered separately Direct sunlight salt air corrosive gas flammable gas and organic solvent must be avoided Installation orientation Installab...

Page 6: ...4 44 1 Figure 1 Dimensions and maintenance clearance Model VY51_FJ VY51_GJ Parts Identification Figure 2 Parts identification Note Leave a clearance of 4 100 mm if you do not open the top cover to se...

Page 7: ...ble for input output signal lines and power line Unshielded cable can cause error due to noise Identification of the selector switches Figure 3 Selector switches Open close selector switch for input s...

Page 8: ...w indicated on the valve body Do not install the product nearby a steam coil pressurized hot water coil or any high heat source High temperature radiation might cause malfunction of its actuator Insta...

Page 9: ...ve seat may get damaged causing fluid leakage due to the sealing material jammed inside the valve Before activating the ACTIVAL fully open in 100 position the valve and flush the pipes with the ACTIVA...

Page 10: ...he ACTIVAL before manually operating the ACTIVAL As shown in Fig 6 from the front of the ACTIVAL hold the joint using a tool such as a wrench and turn the joint slowly toward the set position Figure 6...

Page 11: ...tion to mount onto the valve 4 A thermal insulation sheet is inserted between the yoke and the valve When changing the mounting positions reinsert the sheet and then fit the yoke into the new mounting...

Page 12: ...ower supply and feedback signal and then correctly wire the product Incorrect wiring may result in PCB print circuit board burnout To prevent damage cover the terminals except when connecting disconne...

Page 13: ...sult in electric shock Terminals connection 2 10 V DC input Figure 10 Terminals connection of Model VY514_J 4 20 mA DC input Figure 11 Terminals connection of Model VY519_J 1 Unscrew the setscrews 2 R...

Page 14: ...isolated inside Isolation transformer is required for ACTIVAL Transformer without isolation may damage the ACTIVAL and other devices connected to ACTIVAL Model SDC35TD0 SDC36TD0 13 14 1 T1 2 T2 4 5 6...

Page 15: ...ired for ACTIVAL Transformer without isolation may damage the ACTIVAL and other devices connected to ACTIVAL Model SDC35TC0 SDC36TC0 13 14 1 T1 2 T2 4 5 6 7 Figure 15 Connection example Two Model VY51...

Page 16: ...Inspect the ACTIVAL according to Table 1 Manually open close the ACTIVAL at least once a month if it is left in inactive state for a long period Visually inspect the fluid leakage of the valve and th...

Page 17: ...alve vibrates or produces an abnormal noise Primary pressure condition Differential pressure condition Adjust the mounting position and change the installation location The auxiliary switch does not o...

Page 18: ...18 AB 7489 U This blank page was added for page layout purposes...

Page 19: ...19 AB 7489 U This blank page was added for page layout purposes...

Page 20: ...Kanagawa 251 8522 JAPAN AB 7489 U Rev 0 0 Mar 2018 This product complies with the following harmonised standards of the Electromagnetic Compatibility Directive EMCD and the Restriction of the use of...

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