Type 2935

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1.

General technical data

Product properties

Dimensions

Further information can be found in chapter “4. Dimensions” on page 7.

Material 1.)

Block body (VH) 1.)

Bloc material 1.4435 accordding to DIN EN 10088 and 316L according to ASTM A479/A479M

Block body (VI) 1.)

Bloc material 1.4435 according to BN2 and 316L according to ASME BPE table DT-3

Diaphragm

EPDM (AD) 1.), PTFE/EPDM (EA) 1.), Advanced PTFE/EPDM (EU) 1.), laminate of GYLON® and

EPDM (ER) 1.)

Actuator

(diaphragm bonnet/handwheel)

Stainless steel/PPS, PPS/PPS

Diaphragm size

8…50, for actuator PPS/PPS 15…50 (65…100 see Type 3235 )

Standard surface quality 2.)

Block body (VH/VI) 1.)

Internally electrically polished: Ra ≤ 0.38 μm (NO17) 1.) (ASME BPE SF4/DIN HE4)

(externally: Ra ≤ 1.6 µm)

Internally mechanically polished: Ra ≤ 0.5 μm (NO14) 1.) (ASME BPE SF1)

(externally: Ra ≤ 1.6 µm)

Medium data

Operating medium

Neutral gases and fluids, highly purified, sterile, aggressive or abrasive media

(see resistance chart )

Medium temperature

EPDM (AD) 1.)

- 10…+ 143 °C (steam sterilisation + 150 °C for 60 min)

PTFE/EPDM (EA) 1.)

- 10…+ 130 °C (steam sterilisation + 140 °C for 60 min)

Advanced PTFE/EPDM (EU) 1.)

- 5…+ 143 °C (steam sterilisation + 150 °C for 60 min)

Laminate of GYLON® and EPDM (ER) 1.)

- 5…+ 130 °C (steam sterilisation + 140 °C for 60 min)

Process/Port connection & communication

Nominal diameter (port connection)

DN 06…DN 65 (⅛"…2½")

Port connection 2.) for stainless steel body 2.)

Welded connection 2.)

DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B

DIN 11850 - 2 / DIN 11866 series A / DIN EN 10357 series A

ASME BPE / DIN 11866 series C

Clamp connection 2.)

DIN 32676 series A (DIN pipe)

DIN 32676 series B (ISO pipe)

ASME BPE

Environment and installation

Installation position

See operating manual Type 2935 

Ambient temperature: actuator (diaphragm bonnet/handwheel)

Stainless steel/PPS, PPS/PPS

- 10…+ 130 °C (short-term up to + 150 °C), autoclavable

1.) This information is part of the product key (see “6.3. Bürkert Product Enquiry Form” on page 12).

2.) Further versions are available on request.