Burkert 2933 User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 2933, 2934, 2935, 2973, 2974, 2975
Manually operated diaphragm valves

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2023
Operating Instructions 2304/00_EU-ML_00815442 / Original DE

3
Table of contents
1 OPERATING INSTRUCTIONS............................................... 4
1.1 Symbols....................................................................... 4
1.2 Denitionofterms ....................................................... 4
2 INTENDED USE .................................................................... 5
3 BASIC SAFETY INSTRUCTIONS.......................................... 5
4 GENERAL NOTES................................................................. 7
4.1 Contact addresses ...................................................... 7
4.2 Warranty ...................................................................... 7
4.3 InformationontheInternet.......................................... 7
5 PRODUCT DESCRIPTION .................................................... 7
5.1 Structure and description............................................ 7
5.2 Variants........................................................................ 7
5.3 Function....................................................................... 8
5.4 Productidentication .................................................. 9
6 TECHNICAL DATA............................................................... 11
6.1 Standards and directives........................................... 11
6.2 Mechanical data ........................................................ 11
6.3 Port connections valve body..................................... 12
6.4 Operating conditions ................................................. 12
6.5 Flow values................................................................ 14
7 INSTALLATION .................................................................... 16
7.1 Informationforthecorrectinstallationposition......... 17
7.2 Preparatory work ....................................................... 18
7.3 Install device.............................................................. 19
7.4 Set stroke limit........................................................... 20
7.5 Lock handwheel ........................................................ 21
8 MAINTENANCE................................................................... 22
8.1 Cleaning .................................................................... 22
8.2 Maintenance work ..................................................... 23
8.3 Replacing the diaphragm .......................................... 23
9 REPLACEMENT PARTS, ACCESSORIES .......................... 25
9.1 Replacement diaphragms ......................................... 26
10 TRANSPORTATION, STORAGE, DISPOSAL ...................... 27
english
Type 2933, 2934, 2935, 2973,
2974, 2975

4
Operating instructions
1 OPERATING INSTRUCTIONS
Theoperatinginstructionsdescribetheentirelifecycleofthedevice.
Keep these instructions ready to hand at the operating site.
Important safety information.
▶Readtheseinstructionscarefully.
▶Aboveall,observethesafetyinstructions, intendeduseand
operating conditions.
▶Persons who work on the device must read and understand
these instructions.
1.1 Symbols
DANGER
Warning of an immediate danger.
▶Failure to comply will result in death or serious injury.
WARNING
Warns of a potential danger.
▶Failure to observe these warnings may result in serious injuries
or death.
CAUTION
Warns of a potential hazard.
▶Failure to comply with these instructions may result in moderate
or minor injury.
NOTE
Warns of damage.
Important tips and recommendations.
Referstoinformationintheseoperatinginstructionsorin
other documentation.
▶Highlights instructions to avoid a danger.
→Designates a procedure which you must carry out.
1.2 Denition of terms
Term Denition for these instructions
Device Diaphragm valve type 2933, 2934, 2935,
2973, 2974 and 2975
Ex area Potentially explosive atmosphere
Explosion protection
approval
Approval in potentially explosive
atmosphere
english
Type 2933, 2934, 2935, 2973,
2974, 2975

5
Intended use
2 INTENDED USE
The diaphragm valve type 2933, 2934, 2935, 2973, 2974 and
2975 is designed to control the ow of media. The authorised
media are listed in chapter “Technical data”.
▶Use the device only as intended. Non-intended use of the
device may be dangerous to people, nearby equipment and
the environment.
▶Prerequisites for safe and trouble-free operation are correct
transportation, correct storage, installation, start-up, operation
and maintenance.
▶To use the device, observe the permitted data, operating con-
ditionsandapplicationconditions. Thesespecications can
befoundinthecontractdocuments,theoperatinginstructions
and on the Type label.
▶Use the device only in conjunction with third-party devices and
components recommended or approved by Bürkert.
▶Onlyuseequipmentthatisapprovedforthistypeofpotentially
explosivearea.Thesedevicesareidentiedbyaseparate“Ex”
typelabel.Beforeuse,notetheinformationontheseparateEx
type label and the Ex additional instructions or the separate Ex
operating Instructions.
▶Protectdevicefromenvironmentalinuences(e.g.radiation,
airhumidity,fumes).Ifyouhaveanyquestions,contactyour
Bürkert sales department.
3 BASIC SAFETY INSTRUCTIONS
Thesesafetyinstructionsdonottakeintoaccountanyunforeseen
circumstances or events that occur during installation, operation
and maintenance. The operator is responsible for observing
the location-specic safety regulations, also with reference to
personnel.
Risk of injury due to high pressure and escaping medium.
▶Switchothepressurebeforeworkingonthedeviceorsystem.
Vent or empty the lines.
Electric shock due to installed electrical component.
▶Beforeworkingonthedeviceorsystem,switchothepower
supply. Secure against reactivation.
▶Observe any applicable accident prevention regulations and
safetyregulationsforelectricaldevices.
Danger of bursting in case of overpressure.
Ifthedevicebursts, themediummaycauseinjuries, burnsor
scalds.
▶Do not exceed the maximum medium pressure. Observe spec-
icationsonthetypelabel.
▶Observe allowable temperatures.
Danger of burns and risk of re.
Quicklyswitchingactuatorsorhotmediummaycausethesurface
ofthedevicetobecomehot.
▶Only touch the device when wearing protective gloves.
▶Keepthedeviceawayfromhighlyammablesubstancesand
media.
english
Type 2933, 2934, 2935, 2973,
2974, 2975

6
Basic safety instructions
Medium may leak out if the diaphragm is worn.
▶Inspectreliefboreforanymediumleakages.
▶Changethediaphragmifmediumleaks.
▶Ifthemediumishazardous,securetheareaaroundtheleakage
to prevent risks.
Danger of crushing due to mechanically moving parts.
Thereisariskofcrushingduetotheupanddownmovement
ofthedevicewhenitisactuated.
▶Donotreachintotheopeningsofthevalvebody.
Danger due to loud noises.
Depending on the operating conditions, the device may generate
loudnoises.Moredetailedinformationonthelikelihoodofloud
noisesisavailablefromtherelevantsalesoce.
▶Wearhearingprotectionwheninthevicinityofthedevice.
To avoid injury, observe the following:
▶Do not make any changes to the device and do not subject it
to mechanical stress.
▶Onlytrainedtechniciansmayperforminstallation andmain-
tenance work.
▶Onlyusesuitabletoolstoperforminstallationandmaintenance
work.
▶Heavy equipment must only be transported, assembled and
disassembledwiththehelpofasecondpersonasappropriate
and using suitable apparatus.
▶Only hand-tighten the valve when closing. Too much tightening
may damage the diaphragm.
▶Theprocessmustberestartedinadenedorcontrolledmanner
afteraninterruptioninthepowersupplyorpneumaticsupply.
▶Thedevicemaybeoperatedonlywheninperfectconditionand
inconsiderationoftheoperatinginstructions.
▶Forapplicationsplanningandoperationofthedevice,observe
theplant-specicsafetyregulations.
▶Only the media listed in chapter “Technicaldata”shouldbefed
into the medium ports.
▶Observethegeneralrulesoftechnicalequipment.
▶Theplantownerisresponsibleforthesafeoperationandhan-
dlingoftheplant.
english
Type 2933, 2934, 2935, 2973,
2974, 2975

7
General notes
4 GENERAL NOTES
4.1 Contact addresses
Germany
Bürkert Fluid Control Systems
Sales Centre
Christian-Bürkert-Str.13–17
D-74653Ingelngen
Tel.+49(0)7940-1091111
Fax+49(0)7940-1091448
E-mail:[email protected]
International
Thecontactaddressescanbefoundonthebackpagesofthe
printed operating instructions.
They are also available online at: country.burkert.com
4.2 Warranty
Apreconditionforthewarrantyisthatthediaphragmvalveisused
asintendedinconsiderationofthespeciedoperatingconditions.
4.3 Information on the Internet
Operatinginstructionsanddatasheetsfortype2933,2934,
2935,2973,2974,2975canbefoundonlineat:
country.burkert.com
5 PRODUCT DESCRIPTION
5.1 Structure and description
The device is a manually controlled diaphragm valve with diaphragm
seal.Thevalveconsistsofamanualactuatorandavalvebody.
5.2 Variants
Types293xand297xaredierentiatedbytheactuator.
Thexisdierenttothevalvebody.
5.2.1 Type 2933
Handwheel
Diaphragm
Valve body
Attachment with scale
Port connection
Fig. 1: Example of 2/2-way valve, type 2933
english
Type 2933, 2934, 2935, 2973,
2974, 2975

8
Product description
5.2.2 Type 2934 with T-valve body
Handwheel
Attachment with scale
Diaphragm
T-Valve body
Port connection
Fig. 2: Example of valve with T-valve body, type 2934
5.2.3 Type 2935 with tank bottom body
Handwheel
Attachment with scale
Diaphragm
Tank bottom body
Port connection
Fig. 3: Example of valve with tank bottom body, type 2935
5.2.4 Type 2973, 2974, 2975
Handwheel with lock
(optional)
Valve body
Diaphragm
Attachment with scale
Port connection
Fig. 4: Example of 2/2-way valve, type 2973
5.3 Function
Bymanuallyactivatingthehandwheel,theforceistransmittedviaa
spindle and the valve is opened or closed. The medium in the valve
bodyisreleasedorshuto.Turningthehandwheelanticlockwise
opens the valve, turning it clockwise closes the valve.
5.3.1 Position indicator actuator
5.3.1.1 Actuator DN8
When turning the handwheel anticlockwise, a yellow marking
becomes visible between the attachment and the handwheel.
english
Type 2933, 2934, 2935, 2973,
2974, 2975

9
Product description
Thevisibilityoftheyellowmarkingisnotdirectlyrelated
totheclosedpositionofthevalve.Dependingonthecon-
structionofthevalve,themarkingmay:
- not be visible when the valve is open, or
- visible when the valve is closed.
5.3.1.2 Actuator DN15 to DN50
Reproducible stroke scale
Handwheel with scale
Fig. 5: Position indicator
When turning the handwheel anticlockwise, a reproducible
stroke scale becomes visible between the attachment and the
handwheel.
Thevisibilityofthestrokescaleisnotdirectlyrelatedto
theclosedpositionofthevalve.Dependingonthecon-
structionofthevalve,thereproduciblestrokescalemay:
- not be visible when the valve is open, or
- visible when the valve is closed.
Thescaleon the handwheel determinesthe rotationposition of
thehandwheel(type293x:30positions,type297x:50positions).
Thereproduciblestrokescale showstherelativepositionofthe
valve and serves as a xed point for determining the rotational
position.
5.4 Product identication
5.4.1 Type label
Typ 2933 DN15 ER
00123456
S/N: 1001 W22MN
Tmed: -10...+145°C
NO01 NO17
D-74653
Ingelfingen
1
2
5
34
6
7
8
Fig. 6: Description of the type label (example)
Item Description Item Description
1Manufacturer 5 Medium temperature
2 Type 6 Valvebodysurface
roughness
3 Nominal diameter 7 Serial number
4 Seal material 8 Order number
english
Type 2933, 2934, 2935, 2973,
2974, 2975

10
Product description
5.4.2 Labelling on forged steel valve body
XXXXXXXXXX
XX F
1.4435/316L(VS)
PN16/CWP150
XXXXXXXX/XXX
XXXXXX
XXXX
1
2
3
4
5
6
7
8
Fig. 7: Labelling on forged steel valve body
Item Description Item Description
1 Company logo 5 Production number/
serial number
2 Material 6 Self-drainingangle
3 Nominal pressure
class(PN)
7Customer-specictext
(optional)
4 Batch number 8 Nominal diameter and
pipe dimensions
5.4.3 Labelling on cast valve body
5
6
23
4
1
Fig. 8: Labeling on cast valve body
Item Description Item Description
1 Company logo 4 Nominal diameter
(diaphragmsize)
2 Material 5 Batch number
3 Nominal pressure
class(PN)
6 Nominal diameter and
pipe dimensions
english
Type 2933, 2934, 2935, 2973,
2974, 2975