Pfeiffer Vacuum EVB Series User manual

Operating Instructions
BP 805 229 BE (0109) 1
Angle Valve
pneumatically actuated
bellows sealed
with position indicator, without pilot valve
EVB 016 … 040 P A/X

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In all communications with Pfeiffer Vacuum, please specify the information on the
product nameplate. For convenient reference copy that information into the space
provided below.
Pfeiffer Vacuum, D - 35614 Asslar
Typ:
No:
F-No:
This document applies to products with the following part numbers:
PFA36002
PFA46002
PFA56002
(DN 16 ISO-KF)
(DN 25 ISO-KF)
(DN 40 ISO-KF)
PFA36032
PFA46032
PFA56032
(DN 16 ISO-KF)
(DN 25 ISO-KF)
(DN 40 ISO-KF)
The part number can be taken from the product nameplate.
If not indicated otherwise in the legends, the illustrations in this document cor-
respond to the valve with the vacuum connection DN 25 ISO–KF. They apply to
valves with other vacuum connections by analogy.
We reserve the right to make technical changes without prior notice.
All dimensions are indicated in mm.
The angle valves are used as shut-off and venting devices for vacuum applications.
Product Identification
Validity
Aluminum body
Stainless steel body
Intended use

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Contents
Product Identification 2
Validity 2
Intended use 2
1 Description 4
1.1 Overview 4
1.2 Functional Principle 4
2 Safety 5
2.1 Symbols Used 5
2.2 General Safety Instructions 5
2.3 Liability and Warranty 5
3 Technical Data 6
4 Installation 8
4.1 Vacuum Connection 8
4.2 Compressed Air Connection 9
4.3 Power Connection 11
5 Operation 14
6 Deinstallation 16
6.1 Power Connection 16
6.2 Compressed Air Connection 17
6.3 Vacuum Connection 18
7 Maintenance and Repair 19
7.1 Disassembling the Product 20
7.2 Checking and Cleaning the Parts 30
7.3 Reassembling the Product 31
8 Spare Parts 40
9 Returning the Product 42
10 Disposal 42
Declaration of Contamination 43

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1 Description
Position indication
(visual)
Position indicator
(electrical)
Vacuum connection
DN 16…40 ISO-KF
Pneumatic
actuator
Compressed air
Connector
(enclosed)
Instant push-in fitting
(enclosed)
When compressed air is admitted, the angle valve opens. The visual 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
Compressed air
When no compressed air is admitted, the angle valve ist closed by the pressure
spring. The visual position indicator ist no longer visible and the electrical position
indicator „valve closed“ is activated.
Bellows
sealing the valve
Position indicator
"valve closed"
activated
Pressure spring
for closing the
valve
Position indicator
invisible
Pneumatic
actuator
1.1 Overview
1.2 Functional Principle
Opening action
Closing action

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2 Safety
DANGER
Information on preventing any kind of physical injury.
WARNING
Information on preventing extensive equipment and environmental damage.
Caution
Information on correct handling or use. Disregard can lead to malfunctions or
minor equipment damage.
→See page ...
•=Adhere to the applicable regulations and take the necessary precautions for the
process media used.
Consider possible reactions between the materials (→7) 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 components are con-
taminated. Adhere to the relevant regulations and take the necessary precau-
tions when handling contaminated parts.
Communicate the safety instructions to all other users.
Pfeiffer Vacuum assumes no liability and the warranty becomes null and void if
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, options and add-ons not listed in the
corresponding product documentation.
The end-user assumes the responsibility in conjunction with the process media
used.
2.1 Symbols Used
2.2 General Safety
Instructions
2.3 Liability and Warranty

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3 Technical Data
Connection
Rating soldered joints 250 VAC / 25 VA / 0.1 A
50 VDC / 12.5 W / 0.25 A
Connection flange DN 16 ISO-KF DN 25 ISO-KF DN 40 ISO-KF
Actuation opening: pneumatic
closing: by pressure spring
Tube connection
Pressure range ø4 mm or ø6 mm 3 ... 7 bar overpressure
Piston displacement 5.5 cm312.1 cm326.2 cm3
Stroke of valve plate 5 mm 10 mm 14 mm
Conductance 1) 4.5 l/s 16 l/s 40 l/s
Switching frequency 2)
Opening time 2)
Closing time 2)
100 / min
100 ms
200 ms
100 / min
110 ms
290 ms
75 / min
250 ms
500 ms
Cycle life 3) 10 million
Tightness 1×10-9mbar l/s
Pressure range min. 1×10-8mbar
Pressure range max. (abs.) 4 bar 2.5 bar
In closing direction
In opening direction
Opens to a pressure difference
∆p 4)
4 bar
2 bar
4 bar
2 bar
1.5 bar
2 bar
Ambiance
Bakeout
aluminum body
stainless steel body
actuator
0 °C ... 50 °C
80 °C
150 °C
50 °C
Type of protection
Protection class IP 50 according to DIN 40 050 II
Installation angle
Flow direction any any
Electrical position indicator
Vacuum connection
Compressed air supply
Pressure difference ∆p
Temperatures

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Connection flange DN 16 ISO-KF DN 25 ISO-KF DN 40 ISO-KF
Aluminum body
Stainless steel body
Bellows / valve plate
Pressure spring
DN 16+25 ISO-KF
DN 40 ISO-KF
Seals
Shell
Cylinder unit
Protective lid
Packing material
3.2572
1.4301
1.4541 / 14301
1.4301
1.1200
FPM
PBTP
PBTP
PE
carton box, PE, PU
Aluminum body
Stainless steel body 0.28 kg 0.38 kg 0.42 kg 0.73 kg 0.88 kg 1.58 kg
1) For air with molecular flow
2) With pressure difference ∆p=0 and compressed air = 5 bar (overpressure)
3) Cycles without expendable parts (seals) and under clean operating conditions
4) Compressed air = 5 bar (overpressure)
DN
DN
M5
DN 16 ISO-KF
DN 25 ISO-KF
DN 40 ISO-KF
A
154
176
196.5
B
127
147.4
167.3
C
71
92.5
112
D
60
74
98
E
51
63
83
DN F G
100
108
120
40
50
65
Materials
Weight
Dimensions

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4 Installation
Skilled personnel
The vacuum connection may only be established by persons who have
suitable technical training and the necessary experience or who have
been instructed by the end-user of the product.
DANGER
Caution: overpressure in the vacuum system >1 bar
Injury caused by released parts and harm caused by escaping process
gases can result if clamps are opened while the vacuum system is
pressurized.
Do not open any clamps while the vacuum system is pressurized. Use
the type clamps which are suited to overpressure.
Caution
Caution: dirt sensitive area
Touching the product or parts thereof with one's bare hands increases
the desorption rate.
Always wear clean, lint-free gloves and use clean tools when working
in this area.
Caution
Caution: vacuum component
Dirt and damages impair the function of the vacuum component.
When handling vacuum components, take appropriate measures to
ensure cleanliness and prevent damages.
Keep the protective lids.
4.1 Vacuum Connection
Personnel qualifications
Overpressure 1 bar
Dirt sensitive area
Handling of vacuum com-
ponents
Protective lids

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Remove the protective lids and install the valve to the vacuum system by means of
the small flange fittings.
Any installation angle and flow direction may be chosen.
Seal with
centering ring
Clamp
ISO-KF connection
flange
Protective lid
Skilled personnel
The compressed air connection may only be established by persons
who have suitable technical training and the necessary experience or
who have been instructed by the end-user of the product.
Caution
Specifications for the compressed air:
•=free of particles >5 µm
•=3 ... 7 bar overpressure
•=dry, free of oil or containing oil (Keep using the same quality).
If using compressed air which contains oil, dispose of it in accordance
with the relevant regulations.
Caution
Specifications for the plastic tube:
•=bursting pressure ≥10 bar overpressure (1 MPa)
•=material: PA soft or PU.
Caution
To ensure leak tightness of the instant push-in fitting
•=cut the plastic tube square
•=make sure the outside of the plastic tube is not damaged.
Vacuum connection
4.2 Compressed Air
Connection
Personnel qualifications
Specifications for compressed
air
Specifications for plastic tube
Tightness of connection

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Caution
Caution: plastic thread
The plastic thread is damaged by tilting or overturning the instant
push-in fitting.
•=use the enclosed instant push-in fitting (with extra-long thread)
only.
•=screw in the instant push-in fitting without tilting it and without
exceeding the tightening torque of 0.5 Nm.
The compressed air control system has to be provided by the end-user.
For connection of a ø6 mm plastic tube, exchange the instant push-in fitting.
Compressed air
outlet Compressed air inlet
Tightening torque 0.5 Nm
Unscrew ø4 fitting.
Install ø6 fitting.
Push the tube into the instant push-in fitting until the mechanical stop is reached.
Check that it is correctly mounted by slightly pulling.
Compressed air
outlet Compressed air inlet
Tightening torque 0.5 Nm
Plastic threads
Compressed Air Control
System
Procedure