Type 2975

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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.)

Stainless steel 1.4435/316L

Block body (VI) 1.)

Stainless steel 1.4435/BN2/ASME BPE, Fe < 0.5 %/C ≤ 0.03 %

Diaphragm

EPDM (AD) 1.), PTFE/EPDM (EA) 1.), advanced PTFE/EPDM (EU) 1.),

GYLON®/laminated EPDM (ER) 1.)

Actuator

(diaphragm bonnet/handwheel)

Stainless steel/PPS

Diaphragm size

15…50 (65…100 see Type 3235 )

Standard surface quality 2.)

Block body (VH/VI) 1.)

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

(external: Ra ≤ 1.6 µm)

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

(external: 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)

GYLON®/laminated EPDM (ER) 1.)

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

Process/Port connection & communication

Nominal diameter

DN 08…DN 65 (¼"…2½")

Port connectio for stainless steel valve body 2.)

Welded connection 2.)

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

DIN 11850 series 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 instructions Type 2975 

Ambient temperature: actuator (diaphragm bonnet/handwheel)

Stainless steel/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.