Images are representations only.
3285 2/2-Way Proportional Valve
Brand: Burkert Fluid Control Systems
The direct-acting proportional valve of Type 3285 is used for dosing of liquids and gases in closed or open control loops.
The valve features a stepper motor as the actuator. The integrated electronics simplifies the process integration; additional actuation modules are not necessary.
The motor’s power consumption to hold a specific opening position of the valve is zero. This key feature can reduce the energy consumption of a plant dramatically and thus make it more efficient.
Type 3285 is available as a standard ON/OFF or proportional valve, as a version with integrated positioner and as a version with integrated process controller.
Features
- Actuator isolated from flow path
- Excellent range and fast response times
- Low power consumption
- Connection orifice DN 15...25 | Kvs value 1.8…9.6 m³/h
- Variants: standard, positioner, process controller
Specifications
Seal Material
- EPDM
- FKM
- NBR
- Seat Sealing: Technical Ceramics
Valve Body Material
- Brass
- Stainless Steel
Shaft Material
- Actuator: Stainless Steel
Input Impedance
- Analog Input (Proportional Valve, Positioner Analog, Process Controller): 60 ohms (Current)
- Analog Input (Standard ON/OFF, Proportional Valve, Positioner Analog, Process Controller): 22 kΩ (Voltage)
Flow Rate
- 1.8 to 9.6 m³/hour (Kvs) - Water
Electrical Connectors
- M12 Plug (A-Coded, 8-Pin)
- Process Controller: M12 Socket (A-Coded, 5-Pin)
Medium Temperature
- -30° to 70° C (-22° to 158° F)
Operating Pressure
- 0 to 6 bar(g)
- Vacuum Variant Up to - 0.9 bar(g) optionally available
Cover Material
- Fluid: Polyphenylene Sulfide (PPS)
Orifice Size
- DN 15 to DN 25, NPS 1/2 to NPS 1
Environmental Protection
- IP50
Ambient Temperature
- -10° to 60° C (14° to 140° F)
Shaft Seal Material
- Actuator: FKM
- Actuator: NBR
Applications
- Flow
O-Ring Material
- FKM
- NBR
Mounting Position
- Preferably with Actuator Upright
Spring Material
- Stainless Steel
NPT Connection
- 1" NPT Female
- 1/2" NPT Female
- 3/4" NPT Female
Operating Voltage
- 24 Vdc ± 10 %, Max.
Power Consumption
- Power: < 1 W (Holding Position)
- Power: 12 W, Max.
Media
- Liquids
- Neutral Gas
Frequency
- Extension Sensor Input (Process Controller Digital): 5 to 2,000 Hz
Response Time
- Closure Time: 4 seconds
Operation
- Electrical Operation
- Manual Operation
Interface Connection
- CAN
Disc Material
- Control, Fixed Seat: Technical Ceramic
Approvals & Certifications
- cULus Listed
- UR
Communication
- FOUNDATION Fieldbus
BSP Connection
- G 1" Female
- G 1/2" Female
- G 3/4" Female
Duty Cycle
- 100 % Duty Cycle - Depending on Fluid & Ambient Temperature
