Pfeiffer Vacuum DVB Series User manual

Operating Instructions
BP 805 249 BE / A (0306) 1
Inline Valve
pneumatically actuated, bellows sealed
with position indicator and pilot valve
normally open
DVB 16 … 40 PX

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 2
In all communications with Pfeiffer Vakuum, 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:
Nominal voltage
This document applies to products with the following part numbers:
DN 16 ISO-KF DN 25 ISO-KF DN 40 ISO-KF Nominal voltage
(pilot valve) N.O.
PFD38233 PFD48233 PFD58233 24 VDC (=)
The part number (No) 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 inline valves are used as shut-off and venting devices for vacuum applications.
Product Identification
Validity
Intended Use

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 3
Contents
Product Identification 2
Validity 2
Intended Use 2
1 Description 4
1.1 Overview 4
1.2 Functional Principle 5
2 Safety 6
2.1 Symbols Used 6
2.2 General Safety Instructions 6
2.3 Liability and Warranty 6
3 Technical Data 7
4 Installation 9
4.1 Vacuum Connection 9
4.2 Compressed Air Connection 10
4.2.1 Compressed Air Inlet 11
4.2.2 Compressed Air Outlet 12
4.3 Power Connection 12
5 Operation 16
6 Deinstallation 17
6.1 Power Connection 17
6.2 Compressed Air Connection 18
6.3 Vacuum Connection 19
7 Maintenance and Repair 20
7.1 Disassembling the Product 21
7.2 Checking and Cleaning the Parts 31
7.3 Reassembling the Product 32
8 Spare Parts 42
9 Returning the Product 44
10 Disposal 44
Declaration of Contamination 45

4BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet
1 Description
Vacuum connection
DN 16 ISO-KF
DN 25 ISO-KF
Position indication
(visual)
Position indicator
(electrical)
Connector
(enclosed)
Pilot valve
Pneumatic
actuator
Compressed air
outlet
Compressed air
inlet
Instant push-in
fittings (enclosed)
1x 2x
Caution
The compressed air inlets and outlets of the angle valves with vacuum
connection DN 40 ISO-KF and serial number (F-No) from 4470138 are
reversed in position.
Vacuum connection
DN 40 ISO-KF
Position indication
(visual)
Position indicator
(electrical)
Connector
(enclosed)
Pilot valve
Pneumatic
actuator
Compressed air
outlet
Compressed air
inlet
Instant push-in
fittings (enclosed)
1x 2x
1.1 Overview
DN 16 ISO-KF
DN 25 ISO-KF
DN 40 ISO-KF

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 5
When the pilot valve is deactivated, the inline valve is opened by the pneumatic
actuator. The position indicator becomes visible.
Pneumatic actuator
for opening the valve
Pilot valve
not activated
Position indicator
"valve open"
activated
Position indicator
visible
Compressed air:
outlet
inlet
When the pilot valve is activated, the inline valve is closed by the pressure spring.
The position indicator ist invisible.
Pilot valve
activated
Compressed air:
outlet
inlet
Bellows
sealing the valve
Position indicator
"valve closed"
activated
Pressure spring
for closing the valve
Position indicator
invisible
Pneumatic
actuator
1.2 Functional Principle
Opening action
Closing action

6BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet
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.
®2See page ...
· Adhere to the applicable regulations and take the necessary precautions for the
process media used.
Consider possible reactions between the materials (®28) 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
Type
Nominal voltage
Power
Duty cycle
Nominal diameter
soldered joints
normally open
see product nameplate
1 W
100%
0.5 mm
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 ø4 mm or ø6 mm
Pressure range (overpressure) 3 ... 5 bar 3 ... 6 bar
Piston displacement 5.5 cm312.1 cm326.2 cm3
Stroke of valve plate 5 mm 10 mm 14 mm
Conductance 1) 2.5 l/s 8 l/s 20 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
150 ms
250 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
Dp 4)
4 bar
2 bar
4 bar
2 bar
1.5 bar
2 bar
Ambiance
Bakeout
Body
actuator
pilot valve
0 °C ... 50 °C
150 °C
50 °C
50 °C
Type of protection
Protection class
IP 50 according to DIN 40 050
II
Installation angle
Flow direction
any
any
Pilot valve
Electrical position indicator
Vacuum connection
Compressed air supply
Pressure difference Dp
Temperatures

8BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet
Connection flange DN 16 ISO-KF DN 25 ISO-KF DN 40 ISO-KF
Body
Bellows / valve plate
Pressure spring
DN 16+25 ISO-KF
DN 40 ISO-KF
Seals
Shell
Cylinder unit
Protective lids
Packing material
1.4301
1.4541 / 1.4301
1.4301
1.1200
FPM
ABS-V0
PA6-V0
PE
carton box, PE, PU
Weight 0.44 kg 0.9 kg 1.52 kg
1) For air with molecular flow
2) With pressure difference Dp=0 and compressed air = 5 bar (overpressure)
3) Cycles without expendable parts (seals) and under clean operating conditions
4) Compressed air = 5 bar (overpressure)
1x
2x
DN 16 ISO-KF
DN 25 ISO-KF
DN 40 ISO-KF
A
135.9
157.4
177
B
108.9
128.9
147.8
C
53
74
92.5
D
22
31.5
45.5
E
80
100
130
DN F G
60
74
98
51
63
83
H
100
108
120
DN
DN
M5
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 compo-
nents
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
· DN 16 and DN 25 ISO-KF: 3 … 5 bar overpressure
DN 40 ISO-KF: 3 … 6 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
The plastic tube must meet the following specifications:
· bursting pressure ³10 bar overpressure
· 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.
Caution
Contrary to the illustration below, the compressed air inlets and outlets
of the angle valves with vacuum connection DN 40 ISO-KF and serial
number (F-No) from 4470138 are reversed in position.
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
Plastic tube
Plastic threads
4.2.1 Compressed Air Inlet

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Caution
Contrary to the illustration below, the compressed air inlets and outlets
of the angle valves with vacuum connection DN 40 ISO-KF and serial
number (F-No) from 4470138 are reversed in position.
Screw in the enclosed instant push-in fitting for exhausting the compressed air if
necessary. 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 outletCompressed air inlet
Tightening
torque 0.5 Nm
Skilled personnel
The electrical connection, in accordance with the VDE 0100
guidelines, may be made only by a licensed electrician, qualified as per
VDE 0105. The line cables shall be isolated from the line supply during
all electrical work.
WARNING
Caution: mains voltage
The pilot valve can get destroyed if a wrong mains voltage is applied.
The local mains power rating must correspond with the nominal
voltage of the pilot valve (®22). If they do not correspond, exchange
the pilot valve (®220).
4.2.2 Compressed Air Outlet
4.3 Power Connection
Personnel qualifications
Mains supply

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 13
Caution
The cable must meet the following specifications:
· flexible
· conductor cross-section £0.75 mm2
· cable cross-section £10 mm
· 6-pole without protective conductor or
7-pole with protective conductor.
Slide the screw fitting, connector housing, and strain relief on the cable.
Screw fitting Connector housing
Strain relief
Seal
Washer
Hex head screw
Skin the cable and mount the insulating sleeves if required.
Insulating sleeves
(not incuded)
Specifications for cable
Preparing the connector

14 BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet
Solder the cable. Slide the insulating sleeve over the soldered connections.
The polarity of the pilot valve (solenoid coil) need not be taken
into consideration.
Protective
conductor


Position indicator
"valve closed"


Position indicator
"valve open"


Pilot valve
(coil) Guide cam
Tighten the strain relief and insert it (it will catch).
Reassemble the connector and tighten the screw fitting (width across
17 mm).
hold stationary

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 15
Plug in the connector and secure it with the union nut.
Union nut

16 BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet
5 Operation
The product is ready for operation as soon as it has been installed.
Compressed
air
Position
indication
open
closed available
Control
valve
deactivated
Valve
position
activatednot available
not available
available activated
deactivated
DN 16+25 ISO-KF: 1×10-8mbar ... 4 bar (absolute)
DN 40 ISO-KF: 1×10-8mbar 2.5 bar (absoute)
Caution
Caution: pressure difference Dp
bar
p
VACUUM
Closing direction
p
p+Dp
Dp
bar
At Dp >4 bar (DN 16+25 ISO-KF) and Dp >2 bar (DN 40 ISO-KF) the
valve may no longer be tight.
Avoid bigger pressure differences.
Caution
Caution: pressure difference Dp
p
bar
p
p+Dp
Dp
bar
Opening direction
VACUUM
With Dp >2 bar (DN 16+25 ISO-KF) and Dp >1.5 bar (DN 40 ISO-KF)
the valve is opened.
Avoid bigger pressure differences.
Valve position
Pressure range
Pressure difference Dp in closing
direction
Pressure difference Dp in
opening direction

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Caution
Caution: pressure difference Dp
p
p+Dp
Dp
bar
p
bar
Opening
VACUUM
With Dp >4 bar (DN 16+25 ISO-KF) and Dp >2 bar (DN 40 ISO-KF) the
valve cannot open.
Avoid bigger pressure differences.
6 Deinstallation
Skilled personnel
The electrical power must be disconnected by a skilled electrician.
Caution
The control system must be disconnected from the power source
before any connection to the product is made or interrupted.
Loosen the connector and unplug it.
Union nut
Opening against a pressure
difference Dp
6.1 Power Connection
Personnel qualifications
Controller disconnected

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Skilled personnel
The compressed air may only be disconnected 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: compressed air
Physical injury can result if a pressurized compressed air line is dis-
connected.
Before doing any work, turn off the compressed air supply and relieve
the compressed air lines.
Pull out the tube while depressing the thrust ring.
Thrust ring
6.2 Compressed Air
Connection
Personnel qualifications
Disconnection of the
compressed air line

BP 805 249 BE / A (0306) DVB 16 … 40 PX.bet 19
Skilled personnel
The vacuum connection may only be disassembled 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: contaminated parts
Contaminated parts can be detrimental to health and environment.
Before beginning to work, find out whether any parts are contaminated.
Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
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.
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.
Vent the vacuum system and disassemble the small flange connection. Place the
protective lid.
Protective lid
Seal with
centering ring
Clamp
ISO-KF connection
flange
6.3 Vacuum Connection
Personnel qualifications
Possible contamination
Handling of vacuum compo-
nents
Dirt sensitive area

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7 Maintenance and Repair
Skilled personnel
All work described in this document may only be carried out by per-
sons who have suitable technical training and the necessary experi-
ence or who have been instructed by the end-user of the product.
DANGER
Caution: contaminated parts
Contaminated parts can be detrimental to health and environment.
Before beginning to work, find out whether any parts are contaminated.
Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
p
DANGER
Caution: compressed air
Unprofessionally handling compressed air can cause physical injuries.
Adhere to the relevant regulations and take the necessary precautions
when handling compressed air.
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.
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.
Under clean operating conditions, the product requires no maintenance during the
rated cycle life (10 million cycles).
By carefully cleaning and reassembling the parts, another 10 million cycles can be
reached before the next maintenance intervention becomes necessary.
The valve has been deinstalled (see Deinstallation, page 17 ff.)
Personnel qualifications
Possible contamination
Handling of compressed air
Handling of vacuum components
Dirt sensitive area
First Maintenance
Subsequent Maintenance
Precondition