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Bürkert Servo-operated valve 240985 6281 24 V G 1 Nominal width (details) 25 mm OFF/NC 1 pc(s)
Datasheet (PDF)
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Highlights & Details
2/2-way solenoid valve, servo-controlled
- Servo-controlled diaphragm valve up to nominal size DN50
- Vibration-resistant, central screw-mounted coil system
- Silenced and quiet
- Energy-saving double-coil technology in kick and drop design
- Explosion-proof versions
Technical specifications
- Drive - manual operation Material: PA (polyamide)
- Sealing material - pre-control sealing material: NBR (nitrile rubber)
- Sealing Material - Seat Seal Material Category: Elastomers
- Sealing Material - Seat Seal Material: NBR (Nitrile rubber)
- Sealing material - external sealing Material: NBR (nitrile rubber)
- Pressure & temperature - nominal pressure (DIN EN 1333): PN 16
- Pressure & Temperature - Temperature Medium min -10 °C.
- Pressure & Temperature - Temperature Medium max. 80 °C.
- Pressure & temperature - temperature Surroundings max. 55 °C
- Pressure & temperature - nominal pressure at least 0.2 bar
- Pressure & temperature - Backpressure proof design: No.
- Pressure & Temperature - nominal pressure max (liquid): 16 bar
- Electrical connection - Device socket in the range of supply: Not included
- Electrical connection - Electrical connection Type: Plug picture Form A according to DIN EN 175301-803
- Electrical connection - Electrical connection Position: In flow direction left
- Electrical connection - Electrical connection Number of contacts: 2 + protective conductor
- Equipment characteristics - installation length 95 mm
- Equipment characteristics - main valve operating principle: Diaphragm valve
- Device features - switching time opening max.: 1,500 ms
- Features - switching time includes max.: 3,500 ms
- Device properties - rated mode/duty cycle: 100%
- Equipment characteristics - valve design: Complete valve
- Equipment characteristics - flow: Over seat
- Device properties - Vacuum version: No.
- Device Properties - Oxygen Type: No.
- Device features - Drive type: Lifting anchor
- Device properties - Operation: Servo-controlled
- Device Properties - Media Separation: No.
- Device features - switching function: On/off
- Equipment features - open switching time at least 120 ms
- Features - switching time close at least 200 ms
- Device Properties - Analysis Execution: No.
- Equipment properties - Valve setting Opening time: No.
- Equipment properties - Valve setting Closing time: No.
- Equipment properties - Oil burner valve: No.
- Device Properties - Steam Type: No.
- Equipment properties - Main valve with integrated screen: No.
- Equipment properties - Mounting (flange) Material: Stainless steel
- Device features - Generation: EV
- Device properties - Central screw control: Yes
- Nominal width (kV value) - QNn value (gas): 13,000 l/min.
- Nominal width (kV value) - pilot control nominal diameter (mm): 1.4 mm
- Nominal width (kV value) - main valve nominal width 1 (P) (mm): 25 mm
- Nominal width (kV value) - kV Water value: 12 m3/h.
- Nominal width (kV value) - Main valve nominal width 1 (inch): 1 inch
- Process/line connection – line connection 1 type: Internal thread
- Process/cable connection - cable connection 1 Thread name: 1
- Process/cable connection - cable connection 1 Thread type: G.
- Process/line connection – line connection 2 type: Internal thread
- Process/cable connection - cable connection 2 Thread type: G.
- Process/cable connection - cable connection 2 Thread name: 1
- Protection class IP rating (max. for suitable connection) IP65
- Voltage - battery voltage: Yes
- Voltage - voltage min. / nominal voltage: 24 V
- Voltage - voltage max. / nominal voltage 24 V
- Voltage - AC voltage: No.
- Voltage - DC voltage: Yes
- Voltage - voltage tolerance positive: 10%
- Voltage - voltage tolerance negative: 10%
- Coil (Kern) - spool size 32 mm
- Coil (Kern) - Coil wiring Overvoltage protection: None
- Coil (Kern) - Coil Switching Rectifier: No.
- Coil (Kern) - Coil Switching Free-wheeling diode: No.
- Coil (Kern) - low-noise version: No.
- Coil (Kern) - coil type: Plugged
- Coil (Kern) - Material coil (casing): PA (polyamide)
- Coil (Kern) - Drive thermal insulation class: B.
- Coil (Kern) - part Kern in contact with medium Material: Stainless steel
- Coil (Kern) - part that is in contact with the medium Plug material: Stainless steel
- Coil (Kern) – rated DC 9.5 W.
- Coil (Kern) - Reduced power DC 8 W.
- Materials - main valve material in contact with medium: Brass
- Operating principle - fluid line connection Number: 2
- Operation - Valve function Number of switching positions: 2
- Operation - Valve function: A - closed at rest - pressure connection 1 (P/NC)A - closed at rest - pressure connection 1 (P/NC)
- Operation - Manual operation: Yes
- Mode of action - manual operation Type: Rotary lever
- Mode of action - manual actuation Locking: Yes
- Operation principle - manual operation of screw slot: Yes
- Approvals - nominal power 8 W
- Product type
Servo-operated valve
- Operating voltage
24 V
- Max. operating pressure
0.2 bar
- Enclosure material
Brass
- Connection
G 1
- Operating temperature
-10 °C (min)
- Media temperature (range)
-10 up to 80 °C
- Manufacturer part #
240985
- Operating pressure (min.)
0.2 bar
- Min. operating temperature
-10 °C
- Sealant
Nitrile butadiene rubber
- Function
2/2 normally closed mono-stable
- Max. media temperature
80 °C
- Media temperature (min.)
-10 °C
- Medium
Water
- Nominal width
25 mm
- Length
95 mm
- QNn value
13.000 l/min
IP65
- Max. ambient temperature
55 °C
- Operating principle
OFF/NC
- KV value
12 m³/h
Documents & Downloads
Datasheet
Datasheet 3046811 Bürkert Servo-operated valve 240985 6281 24 V G 1 Nominal width (details) 25 mm OFF/NC 1 pc(s)
User & Safety Instructions
User & Safety Instructions 3046811 Bürkert Servo-operated valve 240985 6281 24 V G 1 Nominal width (details) 25 mm OFF/NC 1 pc(s)
Description
Valve 6281 is a servo-controlled diaphragm valve of the S.EV series. A minimum differential pressure is always required to operate the valve. Depending on the applications, different membrane materials and modes of operation are available. The standard brass housing meets all European drinking water requirements. For further markets, zinc-resistant brass is available. The housing offered is rounded off by a stainless steel variant. In order to reduce the electrical power consumption during operation coils with integrated "kick and drop" (KD) electronics are available in double coil technology. The valve can be supplied with manual operation for easy maintenance and commissioning.
This text is machine translated.
This text is machine translated.
Hints
The kv factor indicates the volume flow through a valve, measured in litres/min at 1 bar and at a water temperature between 5 and 30°C. The QNn factor indicates the gas volume flow, measured in litres/min