2031Tube Valve Body
p. 1/8www.burkert.com
Type 6012/6014P
Pilot valve
Type 8640/8644
Valve block
Type 8041
Electromagnetic
Flowmeter
Pneumatic operated 2/2-way Diaphragm Valve
Technical data
Port connection size DN15...50
Diaphragm size DN08...40
Port connections
Weld ends ASME BPE/DIN 11866 Series CMaterials
BodyActuatorPilot air portsSeal
Stainless steel 316LPPS (PA on request)
Stainless steel 1.4305EPDM, PTFE / EPDM (advanced PTFE/EPDM, FKM on request)
Fluid Neutral gases and liquids, high purity, sterile, aggressive or abrasive fluids
Viscosity up to viscous
Surface finishes (inner surface)
Electro polished Ra 0.38 µmFluid temperature
EPDM, PTFE/EPDM and ad-vanced PTFE/EPDM1) (on request)
FKM (on request)
-10...+130ºC (briefly up to +150°C for steam sterilisation)
-10...+130ºCAmbient temperature
PPS actuator
PA actuator (on request)
+5...+140°C for actuator size <100 mm +5...+90°C for actuator size 100 mm (briefly up to +140°C)
-10...+60°CControl fluid Neutral gases; airInstallation as required, preferably with actuator in upright position
1) Advanced PTFE/EPDM is recommended for sterilization cycle
• Light tube valve body
• Flow optimised body in stainless steel
• Zero dead volume
• Easy to weld
Type 2031 can be combined with...
The externally piloted diaphragm valve consists
of a pneumatically operated piston actuator, a
diaphragm and a 2-way tube valve body.
Bürkert’s patented hydroforming technology
allows the manufacturing of a flow optimized
stainless steel valve body with high surface
quality. A laser-welded flange ensures robust-
ness and hygienic design.
The reliable actuator is made of PPS, a very
resistant polymer. The different Bürkert dia-
phragms are optimized for a high lifetime.
The diaphragm valve with tube body is perfect
for hygienic application in the food and bever-
age, pharma, and cosmetic industries. It is
designed with zero dead leg and a high clean-
ability certified by EHEDG.
Type 8801
ELEMENT
On/Off System
Type 8697
Feedback
2031Tube Valve Body
p. 2/8
Technical data, continued
Port size (tube) Diaphragm size Actuator size ø Pilot pressure Operating pressure max. for seal material Kv values
EPDM PTFE/EPDM and advanced
PTFE/EPDM
[mm] [inch] [mm] [mm] [bar] [bar] [bar] [m3/h]
15 1/2 8 40 5.0...7 10 10 1.720 3/4 15 50 5.0...7 8 - 6.8
63 5.5...7 - 10 6.825 1 20 63 5.5...7 9 - 12.5
80 5.5...7 - 10 12.540 1 1/2 32 100 5.5...7 10 8 3050 2 40 100 5.5...7 6.5 - 40
125 5.5...7 - 10 40
Flow rate: Kv value water [m3/h]: Measured at +20°C, 1 bar pressure at valve inlet and free outlet.
Pressure valves [bar]: Overpressure to the atmospheric pressure
Installation for self-draining operation
XXXXXXXX / XXXXXXX / XXXXXX
marking forself-drain angle
= 15 up to 35º plus 3º to 5º inclination to the pipe axis.
Drain marks permanently marked on both sides of the valve body
show the correct mounting position to optimise drainability.
Body label
H 180°
1.4435316L(VP) XXXXXXXX
H XXXXXXXXXX
PN16 / CWP150
XXXXXXXX / XXXXXXX / XXXXXX
Heat number
Production number /
Serial numberCode surface finish /
customized text (optional)
Port connection & Tube dimensions
Company logo
material
nominal pressure
2031Tube Valve Body
p. 3/8
Approvals
Suitability for foodstuffs / sterile applications
• The composition of the EPDM, PTFE/EPDM and advanced PTFE/EPDM diaphragms corresponds to the Code of Federal Regulations, published by the FDA (Food and Drug Administration, USA).
• The composition of the EPDM, PTFE/EPDM and advanced PTFE/EPDM diaphragms is suitable for the application with food and
beverage (acc. to EC-Regulation 1935/2004/EC)
• The diaphragm valve with tube valve body and EPDM or PTFE has been evaluated for compliance with the Hygienic Equipment Design Criteria of the EHEDG
Materials
Optical position indicator Transparent cap polysulfone PSU
Actuator cover PPS
On request: PA (Polyamide)
Pilot air ports Thread G1/8” stainless steel 1.4305
Piston seal FKM
Guide Sinter metal
Actuator PPS
On request: PA (Polyamide)
Diaphragm EPDM, PTFE/EPDM
On request: advanced PTFE/EPDM, FKM
Valve body Stainless steel 316L
2031Tube Valve Body
p. 4/8
Valve system On/Off Classic
The diaphragm valve Type 2031 can be combined with our electrical position feedback to a valve system On/Off Classic.
The valve system On/Off Classic consists of:
• a electrical position feedback Type 8697 (see separate data sheet)
• a diaphragm valve Type 2031(see ordering chart, p. 6)
For the configuration of further valve systems please use the "Request for quotation" on p. 7
You order two components and receive a complete assembled and certified valve.
Diaphragm valve Type 2031Feedback
Type 8697
Valve System On/Off Classic
Type 2031 + 8697
Electrical position feedback information
When you click on the orange box "More info." below, you will come to our website for the resp. product where you can download the datasheet.
Feedback Type 8697
The Feedback for combination with actuators from the process valve series Classic 20xx is specially designed for the requirements of hygienic pro-
cess environments. Mechanical or inductive limit switches register the position of the valve.
Besides the electrical position feedback signal the status of the device is shown directly on the control head itself via LEDs.
The housing is easy to clean and features proven electrical IP protection and chemically resistant materials for use in hygienic process ing, in food,
beverage and pharmaceutical industries.
2031Tube Valve Body
p. 5/8
Dimensions [mm] - Valve On/Off Classic Type 2031 and valve system On/Off Basic
Weld ends port connection with feedback
Type 8697
ø D3
L
ø D
1
s
C
K H
ø 65.4
HG
ASME BPE/DIN 11866 Series C
Port connection
DN
Diaphragm
size
Actuator
size ø L ø D1 s ø D3 C K H HG
[mm] [inch] [mm] [mm] Feedback
15 1/2 8 40 90 12.7 1.65 53 34 G1/8 81 17620 3/4 15 50 117 19.05 1.65 64 39 G1/8 121 216
63 117 19.05 1.65 80 52 G1/4 138 23325 1 20 63 127 25.4 1.65 80 52 G1/4 146 241
80 127 25.4 1.65 101 60 G1/4 167 26240 1 1/2 32 100 159 38.1 1.65 127 73 G1/4 225 32050 2 40 100 190 50.8 1.65 127 73 G1/4 235 330
125 190 50.8 1.65 15 86 G1/4 273 368
2031Tube Valve Body
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Ordering chart diaphragm Valve Type 2031
Welded connection ASME BPE/DIN 11866 Series C
electropolished Ra 0.38 µm and Inspection certificate 3.1 acc. to EN-ISO 10204 (included in delivery)
Co
ntr
ol
fun
cti
on
Po
rt
co
nn
ecti
on
DN
Dia
ph
rag
m
siz
e
Actu
ato
r siz
e ø
[mm
]
Kv v
alu
e w
ate
r
[m3/h
]
Pil
ot
pre
ssu
re
[ba
r]
Ma
x. o
pe
rati
ng
pre
ssu
re [
ba
r]
Ite
m n
o
EP
DM
se
al
ma
teri
al
Ite
m n
o
PTF
E/E
PD
M
se
al
ma
teri
al
[mm
]
[in
ch
]
[mm
]
A 2/2-way valve, normally clo-sed (NC)
15 1/2 8 40 1.7 5.0...7 10 275 388 275 39020 3/4 15 50 6.8 5.0...7 8 275 391 -
63 6.8 5.0...7 10 - 275 39225 1 20 63 12.5 5.5...7 9 278 879 -
80 12.5 5.5...7 10 - 278 88040 1 1/2 32 100 30 5.5...7 10 278 881 -
30 5.5...7 8 - 278 88250 2 40 100 40 5.5...7 6.5 278 883 -
125 40 5.5...7 10 - 278 884
Control functionB (normally open: NO)
Materials Seal: Advanced PTFE/EPDM, FKM
AdditionalVersions with reduces spring force
Ordering chart for accessories
3/2-way pilot valves with banjo bolts
Seal material valve FKM, seal material banjo bolt NBR
Va
lve
fo
r
actu
ato
r siz
e
[Ø m
m]
Typ
e
Pre
ssu
re i
nle
t
P (
va
lve
bo
dy)
Se
rvic
e
po
rt A
(ba
njo
bo
lt)
Ori
fice
[mm
]
QN
n
va
lue
air
[l/m
in]
Pre
ssu
re
ran
ge
[ba
r]
Ele
ctr
ica
l co
il
co
nn
ecti
on
Ind
. S
td.
Po
we
r
co
nsu
mp
tio
n
[W]
Item no. per voltage/
frequency [V/Hz]
024/D
C
230/50
40-50 6012P G 1/4 G 1/8 1.2 48 0...10 Form B 4 552 295 552 298
63 6012P Tube fitting ø6 mm G 1/4 1.2 48 0...10 Form B 4 552 283 552 286
80-125 6014P G 1/4 G 1/4 2 120 0...10 Form A 8 424 103 424 107
Cable plug Type 2507, Form B or Type 2508, Form A
Item no.
Type 2507, Form B Industrial standard, 0...250 V without circuitry (Type 6012 P) 423 845
Type 2508, Form A acc. to DIN EN 175301-803, 0...250 V without circuitry (Type 6014 P, Type 0331P) 008 376
For further accessories see the the accessories data sheet Type 2XXX for the full options programme.
2031Tube Valve Body
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Valve system On/Off Classic – request for quotation
Please fill out and send to your nearest Bürkert office* with your inquiry or order
Company: Contact person:
Customer no.: Department:
Address: Tel./Fax.:
Postcode/town: E-Mail:
Note
You can fill out
the fields directly
in the PDF file
before printing
out the form.
= mandatory fields to fill out Quantity Required delivery date
Operating data
Pipe line DN PN
Pipe Material
Process fluid
Type of fluid Liquid Steam Gas
standard. Unit
Flow rate (Q, QN, W) 1)
Temperature at valve inlet
Absolute pressure at valve inlet
Steam Sterilisation Temperature
1) standard unit: Liquid Q = m3/h; Steam W = kg/h; Gas QN = Nm3/h
Valves features
Diaphragm size (orifice) DN
Type of connection Weld ends
Standard connection ASME BPE/DIN 11866 Series C
Surface finish Electropolished Ra 0.38
Control function NC1) NO1)
Pilot pressure min. max.
1) NC: normally closed by spring action; NO: normally open by spring actionPlease specify item no. (if known):
Certifications
Test report 2.2 acc. to EN-ISO 10204 (Item no. 803 722)
Inspection certificate 3.1 acc. to EN-ISO 10204 (included in delivery) EHEDG - TYPE EL-CLASS I
Certification of Conformity for the Surface Quality DIN4762-DIN4768-ISO/4287/1 (Item no. 804 175) Food & beverage (acc. to EC-Regulation 1935/2004/EC)
Certification of Conformity for Pickling and Electropolishing Processes (Item no. 444 900) FDA - USP certificate
continued on next page
2031Tube Valve Body
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To find your nearest Bürkert office, click on the orange box www.burkert.com
In case of special application conditions,please consult for advice.
Subject to alteration.© Christian Bürkert GmbH & Co. KG 1506/1_EU-en_00895291
Valve system On/Off Classic – request for quotation, continued
Comments
Feedback features Typ 8697 Click on the orange box „More info.“ below... you will come to our website for the resp. product where you can download the data sheet.
Without end position feedback Micro Switch 24 V DC Please specify item no. (if known):
Inductive Switch 2-wire NAMUR Micro Switch 0...250 V AC/DC
Inductive Switch 2-wire 24 V DC