Type 2975

6 | 12

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3.2. Material specifications

Note:

Your product variant may differ from this illustration depending on the body and interface options.

4

1

2

3

5

6

7

8

9

No.

Element

Material

1

Lock pin

Stainless steel 1.4305

2

Screw

Stainless steel A2

3

Handwheel cover

Polyamide (PA)

4

Handwheel

Polyphenylene sulphide (PPS)

5

Visual position indicator

Polyamide (PA)

6

Valve spindle

Stainless steel 1.4305

7

Diaphragm socket

Stainless steel 1.4308

8

Diaphragm

EPDM (AD), PTFE/EPDM (EA),

advanced PTFE/EPDM (EU),

GYLON®/laminated EPDM (ER)

9

Valve body

See “1. General technical data”

on page .

3.3. Example of available diaphragm materials

The diaphragms have been developed to meet the unique challenges of hygienic and sterile requirements. Bürkert offers diaphragms with

precise material composition and high accuracy. Bürkert diaphragms are available in a wide range of materials which have been tested and

proven in applications in the food and beverage, biotechnology, pharmaceutical and cosmetics industries. The diaphragms are tested

during development and production to ensure reliability under difficult process conditions.

• EPDM (AD)

• PTFE/EPDM (EA)

• Advanced PTFE/EPDM (EU)

• GYLON®/laminated EPDM (ER)

For further information please refer to our flyer “Diaphragm competence for hygienic applications” on our website .