VETEC Ventiltechnik GmbHMOUNTING INSTRUCTION EB005.003-EN (Translation)
Rotary Plug Valve Type 72, 73, 82 with Type M Actuator (MD/MZ)

Introduction
These installation instructions contain important information on the installation, functioning, maintenance and storage of VETEC
valves. The control valves are supplied according to customer specification, complete with actuator and accessories. The valvescomply with the European Pressure Equipment Directive 2014/68/EU.

General safety instructions
The control valves are to be mounted, started up or serviced by fully trained and qualified personnel only; the accepted industry
codes and practices are to be observed. Make sure employees or third persons are not exposed to any danger.
The safety regulations relevant to the plant (e.g. explosion protection, ATEX, corrosive/dangerous media etc.) as well as theaccepted industry codes and practices are to be observed during installation, operation and maintenance.
The manufacturer does not assume any responsibility for damage caused by external forces or any other external influence.
Any hazards that could be caused by the operating and ambient conditions or by moving parts are to be prevented by means of theappropriate measures.
External fires are to be prevented by means of the appropriate measures by the operator.
Valves with hot, touchable surfaces are to be protected according to DIN EN 563 to prevent burn injuries.
Proper shipping and storage of the control valves in accordance with the relevant regulations are assumed.
For weights refer to the delivery notes.
When using manual gears (handwheels) on the actuator, observe the operating instructions to prevent the valve and actuator frombeing damaged.

Intended use
VETEC control valves are sized individually according to the specific operating conditions provided by the customer, such asprocess medium, operating pressure and operating temperature.
The limits of application for DVGW valves concerning the process medium, operating pressure, operating temperature and supply
pressure are given on the nameplate.
Make sure the valves are used as intended.
If the valves are to be used under deviating operating conditions, contact VETEC Ventiltechnik GmbH to make sure that the valves
are suitable for the requirements. Failure to check the valves' suitability for deviating conditions can lead to malfunctions and posea considerable danger to persons, goods and the environment.

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Assembly and disassemblyInstall the control valves into the pipeline and connect them to the lines for the air supply and control signal observing theaccepted industry codes and practices.
For installing the valve into the pipeline we recommend a minimal distance of “a” nominal valve size (a x DN) in front of thevalve and “b” nominal valve size (b x DN) behind the valve.
MediumVentilbedingungenabGasMa ≤ 0,32

40,3 < Ma ≤ 0,7210

Ma ≤ 0,3 / No saturated steam

24Vapors

Liquid0,3 < Ma ≤ 0,7 / No saturated steam

210Saturated steam (percentage of condensate > 5 %)220

Free of cavitatio / w < 10 m/s

24Cavitation producing noise / w < 3 m/s

24Cavitation producing noise / 3 < w < 5 m/s

2

10

Critical cavitation / w ≤ 3 m/s

2

10

Critical cavitation / 3 < w < 5 m/s

220Flashing-

220

Multi-phase-1020

For operating conditions not listed in the table and for solids, contact VETEC AfterSales.

An insufficient cross-section of the supply air line or an insufficient supply pressure impair the valves' control response orproper functioning. An excessive supply pressure can damage the actuator and accessories.
Shut off, drain and vent the respective pipe section according to the operator's instructions before installing or removing thevalves. Pressure-test the pipeline before installing the valves.
Make sure the pipeline is free of any residue (e.g. weld spatter, metal chips, tools etc.). Remove any foreign particles. Make
sure the valves are mounted free of stress and not exposed to excessive vibration.
If the actuators require support in the pipeline, observe the permissible locations. The permissible locations and weights forsupport are detailed in the VETEC regulations. Do not use the piping and control equipment as support or to suspend valvesduring transport; do not step on the piping and control equipment to prevent damage.
Subject all valves taken from stock to safety, functional and leak tests before use.
Failure to follow the instructions properly can lead to malfunctions and pose a considerable danger to persons, goods andthe environment.
Operation
The control valves, as parts of the plant, are to be operated according to the operator's instructions and regulations.
Unstable control causes increased wear. Contaminated supply air (e.g. with oil, water, dirt) or auxiliary energy and signals
not according to specifications can cause the accessories or the entire control valve to malfunction or fail. Protect the valves
against impermissible internal or external stress during operation.
The operator must make sure that the valves' permissible pressure and temperature limits are not exceeded due to athermal expansion of the process medium.
Wear and corrosion may make it necessary to check the wall thickness of the valve bodies at regular intervals. The
minimum required wall thickness is calculated and specified by VETEC.
The valves must be checked for their function at regular intervals (1 x monthly). Perform at least one complete switchingcycle.
Service and maintenance
The valves do not require maintenance. However, they are subject to natural wear, whose extent depends on the operating
conditions. Wear can be identified by an impaired shut-off, increased external leakage, deteriorating control quality orunusual noise emissions.
When repairing or replacing parts subject to wear on disassembled valves in the workshop, proceed as described in themounting and operating instructions. Only use original spare parts by VETEC Ventiltechnik GmbH.
As the valves may contain residue of the process medium, we recommend to remove the valves from the pipeline observing
the medium-specific safety instructions.
Depending on the field of application, allow the valves to cool down or heat up to reach ambient temperature before starting
any work on them.
Before starting any work on the valves or actuators, shut off the pneumatic and electric supplies to prevent any hazards
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caused by moving parts of the valves or actuators. In particular, make sure that the actuator springs remain compressed
even after the actuators have been vented and the supply has been shut off. This is particularly important to remember
when removing the actuators from the valves or when opening the actuators.
When changing or retrofitting packing systems, e.g. according to TA-Luft, observe the VETEC mounting instructions.
When mounting pressure-bearing parts on the valves, observe the tightening torques for bolts and screw connections
specified in the maintenance instructions.
MarkingThe valves have a tag (identification plate). The tag is attached to the actuator or, for deliveries without actuator, to thevalve's connecting flange.
Conformity with the European Pressure Equipment Directive 2014/68/EU is documented by the CE marking on the tags.
Exception: valves according to 2014/68/EU, Article 4, Paragraph 3 (good engineering practice).
The valve and actuator types, nominal size, nominal pressure, serial number, order number etc. are specified on the tags
(identification plate).

placed on the sideof the actuatorfacing the valve

Description of the tag (identification plate)1

Ventil Typ / valve type

12

2
3
4

Ventil Serien-Nr. / valve serial no.
Baujahr/year of manufacture
Nennweite / nominal size

131415567891011

Nenndruck / nominal pressure
Gehäusewerkstoff / body material
Werkstoff Sitz / seat material
Werkstoff Sitz-Dichtkante / seat facing materialKvs-Wert / kvs value
Cvs-Wert / cvs value
Armaturen-Kennlinie / valve flow characteristic

16
17
18
19
20
21
22
23

Schallmaßnahme, falls vorhanden / noise reduction if
applicable
Entfällt / n.a.
Entfällt / n.a.
Sicherheitsstellung bei Hilfsenergie Ausfall / fail safe
position without power supply
CE-Kennzeichen / CE mark
VETEC Auftragsnummer / VETEC order no.
Auftragspositionsnummer / order pos. no.
MSR Nr. / Tag No.
Seriennr. Antrieb / serial no. actuator
Antriebstyp / actuator typePackungsausführung / packing
Max. zul. Zuluftdruck des Stellantriebes/ max. air supply

The serial number is stamped onto the flange for future inquiries and spare part orders.

Serial No. stamped onto the flange

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Installation into the pipeline
Mount the valve into the pipeline with the arrow on the body pointing in flow direction. Make surethe valve inlet is equipped with a filter or strainer if the absolute cleanness of the process medium is
not ensured otherwise (e.g. central filtering unit)

Flow directionMounting position of the actuator
The actuator must be installed in the specified positions. Other mounting positions must be approved by VETEC before installation.
Mounting type B
FTC (spring closes, air opens)

FTO (spring opens, air closes)

SupportAll Types MZ and MD Actuators listed in Table 01 are to be supported when mounted into the pipeline. Permissible locations for support aremarked in the drawings. All actuator weights are given without manual gear (see Table 01). For actuator weights with manual gear refer toTable 02. For detailed information, observe the installation instructions EB005.032.
Table 01
Table 02

Actuator

WeightActuator

WeightType

Without manual gear

Type + handwheel

With manual gear

in kg

in kg

MZ450/…

170

MZ450/…+ GK14.6

200

MZ700/…

600

MZ700/…+ GK25.2

710

MD450/…

370

MD450/…+ GK25.2

480

MD700/…

700

MD700/…+GK30.2

886

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Transport for mounting
Use only the predefined locations to suspend the control valves during transport. Whendamaged, it can no longer be guaranteed that the valve moves to its fail-safe position(transit time). Use only the predefined locations to suspend the control valves duringtransport. Control lines, accessories as well as other components with fail-safe function
must not be used as suspensions for transport. For detailed information, observe thehandling and transport instructions EB005.036.

Without manual gear
All actuator weights are given without manual gear (see Table 01).

With manual gear
For actuator weights with manual gear refer to Table 02.

Accessories and control line
As DVGW valves are safety valves, allcontrol
lines,
accessories
andcomponents for fail-safe function must
be protected against improper use.
When damaged, it can no longer beguaranteed that the valve moves to its
fail-safe position (transit time). Any
structural changes to the DVGW valvesdelivered by VETEC must be performedby trained personnel.

EB005.003-EN (EB005.025)

F

Make sure no improper
forces act on the control lineor accessories. Do not store
the valve on the control line
since this can causedamage.

FF

Do not step on thecontrol line oraccessories and do
not damage themwith tools.

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Insulating the pipeline and control valve
Insulate the valve so that neither the fail-safe action nor the proper functioning are impaired.

Insulating valves with TA-Luft packing
Make sure no excessive temperatures or heat accumulation occur at the packing or seal. The recommended values given in the table are to beobserved. Valves with TA-Luft packing are marked specially.
Valveaccording toTA- Luft(2002)“TA- Luft”- plate has
to be placed beside
the nameplate

Insulation

Valve size

Distance M in mm

255040605060806010060

150

100200100

Starting up valves with longer heating-up time
For valves in sizes DN 200 or larger and for operating temperatures above 200 °C, expansion of the components due to heat cannot beavoided. Since the components are made of different materials, the degree and direction of heat-induced expansion, due to the design, arenot exactly defined.
Kegel kann sich durch
The plugausmay
expandWärmezufuhr
dehnen.

due to heat exposure.

During the heating-up period, the heat is distributed rather unevenly acrossthe valve. The components expand differently. As a result, the plug can get
jammed in the seat ring (see drawing).

As a result, open the valve slightly (angle of approx. 2° to 3°) before start-up
and close it again after start-up when the process medium has distributed theheat evenly (see drawing).
.

2° bis 3°

The valve can be opened by the specified angle using the actuator oradditionally mounted travel stops on the actuator.

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Electrostatic discharge
Electrostatic charging may occur on the valve bodies during operation in the plant, particularly on valves with insulation. As a result, include aground connection as a safety measure.

Ground connection
Safety measure againstelectrostatic charging

Valves with ceramic trims
Valves with ceramic trims bear a special label.

Caution!
The threaded area must
be free of paint.

!!! Caution !!!
Ceramic

Do not subject ceramic parts to sudden temperature increases or other thermal shocks. Strictly observe the thermal shock limits.
Valves with retaining ring (Types 72.2, 72.6, 72.2P) must be open when installing them into the pipeline
Do not expose valves with ceramic trims and ceramic spare parts to sudden mechanical stress.

To ensure tight shut-off towards the atmosphere, cover the area between the armored bushing and the body with a sealing surface on bothsides.

DNValve size
mm
2540
50
80
100
150200250
300

EB005.003-EN (EB005.025)

Amm
6482
100
132
162217272326377

B
Inside pipe dimensions acc. toSeries 01
mm
28.5
43.1
54.5
82.5
107.1
159.3
206.5
258.8
307.9

B

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Assambling actuators and accesoires
The mounting of actuators and accessories must not take place byhard strokes.

Cleaning and rinsing pipelines before start-up
While the pipeline is being rinsed, any residue from mounting (welding spatter, etc.) or from tools (wrench sockets, nuts, etc.) can damage
the valve.
Particularly, valves with soft-seated plugs, strainer inserts, filter inserts, noise-reducing trims, perforated plates must be removed from thepipeline and replaced by adapters before rinsing the pipeline.

Valve with soft seat or plastic seat

Noise-reducing trim

Seat ring with perforated plate

Perforated plate

Flow divider

Disassembling actuators, gears, bonnets, packing, nuts and bolts, stoppers or other pressure-bearing seal elements
CAUTION! Do not remove the actuator from the valve while thevalve is in operation in the pipeline/plant!

EB005.003-EN (EB005.025)

CAUTION! Do not undo or remove external pressure-bearing
components while the valve is in operation in the pipeline/plant!

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The lateral screw is not a port sniffer. It serves as a blow out
for the shaft and therefore must not be removed during the operationin the pipeline or in the system.

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VETEC Ventiltechnik GmbH

Siemensstraße 12 ꞏ 67346 Speyer
Tel.: 0 62 32 64 12-0 ꞏ Fax: 0 62 32 4 24 79 ꞏ E-Mail: vetec@vetec.de ꞏ Internet: www.vetec.de

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Freigabe und Genehmigung
Erstellt:

Abt., Name

P. Konzack

Datum: 12.04.2005

Genehmigt:

Abt., Name

N. Hock

Datum: 12.04.2005

ÄnderungenRev.

Datum

RevisorBeschreibung

0307.04.2006

fth

Typenschild-Zeichnung geändert04

15.03.2021

fth

Layout geändert und Kap. / Betrieb mit Funktionsprüfung ergänzt

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