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Burkert Type 8690 User Manual

Page 14

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14

Technical data

6.3.

Operating conditions

Warning!

solar radiation and temperature fluctuations may cause mal-
functions or leaks.
• If the device is used outdoors, do not expose it unprotected to

the weather conditions.

• Ensure that the permitted ambient temperature does not exceed

the maximum value or drop below the minimum value.

Ambient temperature:

0 to +55 °C

Protection class: IP65 / IP67 according to EN 60529 (only if cables
have been connected correctly and in compliance with the exhaust
air concept in chapter “8.2. Installing the process valve”).

6.4.

Type label (example)

8690 24 V/DC

single act Pilot 0,6

Pmax 7 bar 2 sw.mec.

Tamb 0°C - +55°C

S/N 001000

00185114

D-74653

Ingelfingen

W14UN

ce

Identification number

Supply voltage / Control

Nominal pressure - limit
switch

Type

Control function - pilot valve

Bar code

Serial number - CE mark

Max. ambient temperature

Fig. 5: Example of type label

6.5.

Mechanical data

Dimensions:

see data sheet

Body material

external PPS, PC

Sealing material external EPDM

internal NBR

Stroke range of valve spindle 7 - 28 mm

6.6.

pneumatic data

Control medium neutral gases, air, Quality classes in accordance

with DIN ISO 8573-1

Dust content Class 5

max. particle size 40 μm,

max. particle density 10 mg/m

3

Water content Class 3

max. pressure dew point -20 °C or

min. 10 °C below the lowest operating

temperature

Oil content

Class 5

max. 25 mg/m

3

Temperature range

0 to +50 °C

Pressure range

3 to 7 bar

Air output of pilot valve

250 I

N

/min

(for aeration and deaeration, Q

Nn

-value

according to definition for pressure
drop from 7 to 6 bar absolute)

Connections

Plug-in hose connector ∅6 mm / ¼”
Socket connection G 1/8

english

Type 8690 Ex