Type 3285

3 | 15

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1.

General technical data

1.1. General

Product properties

Dimensions

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

Material

Further information can be found in chapter “3.2. Material specifications” on page 6.

Valve body

Brass or stainless steel

Seal

• NBR for liquids

• EPDM for liquids and special gases (e. g. ammonia, acetylene)

• FKM for neutral gases

Seat sealing

Technical ceramics

Design

• Disc On/Off valve

• Disc control valve

Connection nominal diameter

DN 15… DN 25, NPS ½…1

Safety setting in case of power

failure

With capacitive buffer module as accessory, see chapter “4.2. Capacitive buffer module” on page 8.

Flow direction

Above seat

Controller variant

Standard On/Off, standard control valve, position controller or process controller

Weight

~ 0.8 kg (DN 8)…1.5 kg (DN 25)

Status display

LED (Refer to the instruction manual for more information.)

Performance data

Typical values of positioning behaviour1.)

Dead band of the position

control

± 0.5 % (corresponds to setting range 1:100)

Closing time

4 s

Operating pressure

0…6 bar(g) (see chapter “6.2. Pressure range” on page 10)

Vacuum version (up to - 0.9 bar(g)) (optional)

K

VS value

1.8…9.6 m³/h (see chapter “6.2. Pressure range” on page 10)

Electrical data

Operating voltage

24 V DC ± 10 % (max. residual ripple 10 %)

Duty cycle

Up to 100 % (depending on medium and ambient temperature)

Power consumption

< 1 W in holding position

Max. 12 W (depending on motor control)

Medium data

Operating medium

Neutral gases, liquids

Medium temperature

• EPDM (seal material): - 30 °C…+ 70 °C

• FKM, NBR (seal material): 0 °C…+ 70 °C

Viscosity

Max. 80 mm²/s (cSt)

Process/Port connection & communication

Port connection

Threaded connection

• G (EN ISO 228 - 1)

• NPT (ASME B 1.20.1)

Communication and control

Standard signal (analogue)

Setpoint: 0/4…20 mA, 0…5/10 V and digital input, see chapter “1.2. Electrical control and inter-

faces” on page 4.

Fieldbus (digital)

• Bürkert system bus (büS)

• CANopen (optional)

EDIP

Field device for integration into the EDIP platform via Bürkert system bus (büS)

Further information can be found in chapter “8.2. Bürkert Communicator Software” on page 13.

Approvals and conformities

Degree of protection

IP50

North America (USA/Canada)

Further information can be found in chapter “2.4. North America (USA/Canada)” on page 5.

Drinking water

Further information can be found in chapter “2.5. Drinking water” on page 5.

Others

Further information can be found in chapter “2.6. Others” on page 5.