VAT 21628-KA21 Owner's manual

601247EB (2018-01) 1

HV Angle Valve

pneumatically operated

bellows sealed

with position indicator

21624-K...-....

21628-K...-....

21632-K...-....

HV Inline Valve

pneumatically operated

bellows sealed

with position indicator

21624-K...-....

21628-K...-....

21632-K...-....

Operating Manual

2

601247EB (2018-01)

Product Identification

In all communications with VAT, please specify the information

on the product nameplate. For convenient reference copy that

information into the space provided below:

Inline Valve

Stainless steel housing

Angle Valve

Aluminum housing Angle Valve

Stainless steel housing

Inline Valve

Aluminum housing

made in Switzerland

Fabrication No.:

.....-....-..../....

A-......

made in Switzerland

Fabrication No.:

.....-....-..../....

A-......

601247EB (2018-01)

3

Validity

This document applies to products with the following part num-

bers:

Angle valves …

… with pilot valve, normally closed (n.c.)

• Aluminum housing

DN 16

ISO-KF

21624-KA41-

DN 25

ISO-KF

21628-KA41-

DN 40

ISO-KF

21632-KA41-

Nominal voltage or

voltage range

(pilot valve)

000. 000. 000. 24 VDC

AAM. AAM. AAM. 24 VAC

AAK. AAK. AAK. 100 … 115 VAC

AAL. AAL. AAL. 200 … 230 VAC

• Stainless steel housing

DN 16

ISO-KF

21624-KE41-

DN 25

ISO-KF

21628-KE41-

DN 40

ISO-KF

21632-KE41-

Nominal voltage or

voltage range

(pilot valve)

000. 000. 000. 24 VDC

AAM. AAM. AAM. 24 VAC

AAK. AAK. AAK. 100 … 115 VAC

AAL. AAL. AAL. 200 … 230 VAC

… with pilot valve, normally open (n.o.)

• Aluminum housing

DN 16

ISO-KF

21624-KA41-

DN 25

ISO-KF

21628-KA41-

DN 40

ISO-KF

21632-KA41-

Nominal voltage

(pilot valve)

ACV. ACV. ACV. 24 VDC

• Stainless steel housing

DN 16

ISO-KF

21624-KE41-

DN 25

ISO-KF

21628-KE41-

DN 40

ISO-KF

21632-KE41-

Nominal voltage

(pilot valve)

ACV. ACV. ACV. 24 VDC

4

601247EB (2018-01)

… without pilot valve

• Aluminum housing

DN 16 ISO-KF

21624-KA21-

DN 25 ISO-KF

21628-KA21-

DN 40 ISO-KF

21632-KA21-

000. 000. 000.

• Stainless steel housing

DN 16 ISO-KF

21624-KE21-

DN 25 ISO-KF

21628-KE21-

DN 40 ISO-KF

21632-KE21-

000. 000. 000.

Inline Valve …

… with pilot valve, normally closed (n.c.)

• Aluminum housing

DN 16

ISO-KF

21624-KA41-

DN 25

ISO-KF

21628-KA41-

DN 40

ISO-KF

21632-KA41-

Nominal voltage or

voltage range

(pilot valve)

AAB. AAB. AAB. 24 VDC

AAP. AAP. AAP. 24 VAC

AAN. AAN. AAN. 100 … 115 VAC

AAO. AAO. AAO. 200 … 230 VAC

• Stainless steel housing

DN 16

ISO-KF

21624-KE41-

DN 25

ISO-KF

21628-KE41-

DN 40

ISO-KF

21632-KE41-

Nominal voltage or

voltage range

(pilot valve)

AAB. AAB. AAB. 24 VDC

AAP. AAP. AAP. 24 VAC

AAN. AAN. AAN. 100 … 115 VAC

AAO. AAO. AAO. 200 … 230 VAC

601247EB (2018-01)

5

… with pilot valve, normally open (n.o.)

• Aluminum housing

DN 16

ISO-KF

21624-KA42-

DN 25

ISO-KF

21628-KA42-

DN 40

ISO-KF

21632-KA42-

Nominal voltage

(pilot valve)

AAB. AAB. AAB. 24 VDC

• Stainless steel housing

DN 16

ISO-KF

21624-KE42-

DN 25

ISO-KF

21628-KE42-

DN 40

ISO-KF

21632-KE42-

Nominal voltage

(pilot valve)

AAB. AAB. AAB. 24 VDC

… without pilot valve

• Aluminum housing

DN 16 ISO-KF

21624-KA21-

DN 25 ISO-KF

21628-KA21-

DN 40 ISO-KF

21632-KA21-

AAB. AAB. AAB.

• Stainless steel housing

DN 16 ISO-KF

21624-KE21-

DN 25 ISO-KF

21628-KE21-

DN 40 ISO-KF

21632-KE21-

AAB. AAB. AAB.

The part number (PN) can be taken from the product nameplate.

If not indicated otherwise in the legends, the illustrations in this

document correspond to the valve with part number 21628-

KA41-000.. They apply to the other valves by analogy.

We reserve the right to make technical changes without prior

notice.

All dimensions are indicated in mm.

Intended Use

The angle valves are used as shut-off and venting devices for

vacuum applications.

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601247EB (2018-01)

Scope of Delivery

• 1× Valve

• 1× Female cable connector

• 1× Instant push-in fitting

• 1× Operating Manual German

• 1× Operating Manual English

Contents

Product Identification 2

Validity 3

Intended Use 5

Scope of Delivery 6

1

Functional Principle 8

1.1

Valve with Pilot Valve, Normally Closed 8

1.2

Valve with Pilot Valve, Normally Open 10

1.3

Valve without Pilot Valve 12

2

Safety 14

2.1

Symbols Used 14

2.2

Personnel Qualifications 14

2.3

General Safety Instructions 15

2.4

Liability and Warranty 15

3

Technical Data 16

4

Installation 21

4.1

Vacuum Connection 21

4.2

Compressed Air Connection 23

4.3

Power Connection 26

601247EB (2018-01)

7

5

Operation 31

5.1

Valve with Pilot Valve, Normally Closed 31

5.2

Valve with Pilot Valve, Normally Open 32

5.3

Valve without Pilot Valve 32

6

Deinstallation 33

6.1

Power Connection 33

6.2

Compressed Air Connection 35

6.3

Vacuum Connections 37

7

Maintenance / Repair 39

7.1

Cleaning / Replacing Bellows and Seals 40

7.2

Replacing the Cover 43

8

Spare Parts 45

9

Accessories 46

10

Returning the Product 47

11

Disposal 48

For cross references within this document, the symbol (→  XY)

is used.

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601247EB (2018-01)

1 Functional Principle

1.1 Valve with Pilot Valve, Normally Closed

Opening action

When the pilot valve is activated, the angle valve is opened by

the pneumatic actuator. The visual position indicator becomes

visible and the electrical position indicator "valve open" is acti-

vated.

Pneumatic actuator

for opening the valve

Position indicator

"valve open"

activated

Position indicator

visible

Pilot valve

activated

601247EB (2018-01)

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Closing action

When the pilot valve is deactivated, the angle valve is closed by

the pressure spring. The visual position indicator is no longer

visible and the electrical position indicator "valve closed" is acti-

vated.

Pilot valve

not activated

Bellows sealing

the valve

Position indicator

"valve closed"

activated

Pressure spring

for closing the

valve

Position indicator

invisible

Pneumatic

actuator

10

601247EB (2018-01)

1.2 Valve with Pilot Valve, Normally Open

Opening action

When the pilot valve is deactivated, the angle valve is opened by

the pneumatic actuator. The position indicator becomes visible

and the electrical position indicator "valve open" is activated.

Pneumatic actuator

for opening the valve

Position indicator

"valve open"

activated

Position indicator

visible

Pilot valve

not activated

601247EB (2018-01)

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Closing action

When the pilot valve is activated, the angle valve is closed by the

pressure spring. The position indicator is invisible and the elec-

trical position indicator "valve closed" is activated.

Pilot valve

activated

Bellows sealing

the valve

Position indicator

"valve closed"

activated

Pressure spring

for closing the

valve

Position indicator

invisible

Pneumatic

actuator

12

601247EB (2018-01)

1.3 Valve without Pilot Valve

Opening action

When compressed air is admitted, the angle valve opens. The

visual position indicator becomes visible and the electrical

position indicator "valve open" is activated.

Compressed air

Pneumatic actuator

for opening the valve

Position indicator

"valve open"

activated

Position indicator

visible

601247EB (2018-01)

13

Closing action

When no compressed air is admitted, the angle valve is closed

by the pressure spring. The visual position indicator is no longer

visible and the electrical position indicator "valve closed" is acti-

vated.

Position indicator

"valve closed"

activated

Pressure spring

for closing the

valve

Position indicator

invisible

Pneumatic

actuator

Compressed air

Bellows sealing

the valve

14

601247EB (2018-01)

2 Safety

2.1 Symbols Used

DANGER

Information on preventing any kind of physical injury.

WARNING

Information on preventing extensive equipment and environ-

mental damage.

Caution

Information on correct handling or use. Disregard can lead to

malfunctions or minor equipment damage.

2.2 Personnel Qualifications

Skilled personnel

All work described in this document may only be carried out by

persons who have suitable technical training and the neces-

sary experience or who have been instructed by the end-user

of the product.

601247EB (2018-01)

15

2.3 General Safety Instructions

• Adhere to the applicable regulations and take the necessary

precautions for the process media used.

Consider possible reactions between the materials (→  18)

and the process media.

• Adhere to the applicable regulations and take the necessary

precautions for all work you are going to do and consider the

safety instructions in this document.

• Before beginning to work, find out whether any vacuum com-

ponents are contaminated. Adhere to the relevant regulations

and take the necessary precautions when handling contamin-

ated parts.

Communicate the safety instructions to all other users.

2.4 Liability and Warranty

VAT assumes no liability and the warranty becomes null and

void if the end-user or third parties

• disregard the information in this document

• use the product in a non-conforming manner

• make any kind of interventions (modifications, alterations etc.)

on the product

• use the product with accessories not listed in the product

documentation.

The end-user assumes the responsibility in conjunction with the

process media used.

Failures due to contamination or wear and tear, as well as ex-

pendable parts (e.g. seals), are not covered by the warranty.

16

601247EB (2018-01)

3 Technical Data

Pilot valve

Nominal voltage

Power

DC voltage

AC voltage

Duty cycle

Nominal diameter

→ product nameplate

2.5 W

4.8 / 3.6 VA

100%

1.2 mm

Electrical position indi-

cator

Connection

Rating

soldered joints

250 VAC / 25 VA / 0.1 A

50 VDC / 12.5 W / 0.25 A

Vacuum connection DN 16

ISO-KF DN 25

ISO-KF DN 40

ISO-KF

Actuation opening: pneumatic

closing: by pressure spring

Compressed air supply

Tube connection

Pressure range

Purity classes

ø4 mm, ø6 mm or ø¼"

4 … 8 bar (overpressure)

2 4 1 (ISO 8573-1)

Piston displacement 4 cm

3

11 cm

3

35 cm

3

Stroke of valve plate 6 mm 8 mm 13 mm

Conductance

1)

Angle valve

Inline valve

5 l/s

2.5 l/s

14 l/s

7 l/s

45 l/s

20 l/s

Switching frequency

2)

100 / min 100 / min 75 / min

Opening time

3)

100 ms 120 ms 260 ms

Closing time

4)

100 ms 160 ms 540 ms

1)

For air with molecular flow.

2)

With pressure difference ∆p=0 and compressed air = 5 bar (over-

pressure).

3)

With compressed air = 4 bar (overpressure) and vacuum in the

valve.

601247EB (2018-01)

17

Cycle life

5)

10 million

Tightness 1×10-9 mbar l/s

Pressure max. 5 bar (absolute)

Operating pressure min. 1×10-8 mbar

Operating pressure max. 2 bar

Pressure difference ∆p

In closing direction

In opening direction

5 bar

2 bar

Temperature

Ambiance

Bakeout

Housing

Aluminum

Stainless steel

Actuator

Pilot valve

0 °C … +50 °C

80 °C

150 °C

50 °C

Use altitude up to 2500 m NN

Type of protection IP 50

Protection class II

Mounting orientation any

Flow direction

6)

any

4)

With compressed = 8 bar (overpressure) and atmosphere in the

valve.

5)

Cycles without expendable parts (seals) and under clean operating

conditions.

If the valve is operated under harsh or dirty conditions, it should be

cleaned / maintained before the specified service time to mainte-

nance has been reached.

6)

Recommended mounting orientation: valve seat toward vacuum

chamber.

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601247EB (2018-01)

Materials

Housing

Aluminum

Stainless steel

Bellows / valve plate

Pressure spring

Seals

Cover

Visual position indi-

cator

Cylinder unit

Protective lid

Packing material

EN AW-6060

1.4301

1.4404 / 1.4435

spring steel

FPM

ABS

POM

EN AW-6060

PE

carton box, PE

Weight

Angle valve

Aluminum

Stainless steel

0.49 kg

0.52 kg

0.68 kg

0.75 kg

1.21 kg

1.33 kg

Inline valve

Aluminum

Stainless steel

0.56 kg

0.89 kg

0.78 kg

1.35 kg

1.41 kg

2.2 kg

601247EB (2018-01)

19

Dimensions [mm]

• Angle valve

DN

ø4

enclosed

Visual position indicator Valve seat site

Compressed air connection Flow direction

Position indicator connection Protective lid

Electrical connection

Aluminum housing

DN A B C D E F G

DN 16 ISO-KF 142 112.9

75.1 55 51.4

93.2

40

DN 25 ISO-KF 146.9

117.8

79 64.3

60.1

97.8

50

DN 40 ISO-KF 188.8

159.7

114.9

81.3

75.7

105.3

65

Stainless steel housing

DN A B C D E F G

DN 16 ISO-KF 144.5

115.4

77.6 55 51.4

93.2

40

DN 25 ISO-KF 150.3

121.2

82.5 64.3

60.1

97.8

50

DN 40 ISO-KF 191.8

162.7

117.9

81.3

75.7

105.3

65

20

601247EB (2018-01)

• Inline valve

DN

ø4

enclosed

Visual position indicator Valve seat site

Compressed air connection Flow direction

Position indicator connection Protective lid

Electrical connection

Aluminum housing

DN A B C D E F G H

DN 16 ISO-KF

133.1

104 66.2

18.7

80

55 51.4

93.2

DN 25 ISO-KF

137.6

108.5

69.7

25 100

64.3

60.1

97.8

DN 40 ISO-KF

177.1

148 103.2

30 130

81.3

75.7

105.3

Stainless steel housing

DN A B C D E F G H

DN 16 ISO-KF

126.1

97 59.2

20 80 55 51.4

93.2

DN 25 ISO-KF

133.6

104.5

65.7

31.8

100

64.3

60.1

97.8

DN 40 ISO-KF

169.1

140 95.2

40.8

130

81.3

75.7

105.3

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