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2871 2/2-Way Solenoid Control Valve
Brand: Burkert Fluid Control Systems
The direct-acting solenoid control valve Type 2871 (20 mm installation width) is used as the regulating unit in control loops.
Due to an elastomeric seat seal the valve closes tight (integrated shut-off function) ,up to the DN specific nominal pressure. The plunger of the valve is assembled frictionless, which leads to an extraordinary adjustment characteristic.
This valve is particularly suitable for demanding control tasks (high control range, dry gases, etc.). Valve control takes place through a PWM signal. The duty cycle of the PWM signal determines the coil current and hence the position of the plunger.
Optionally the valve can also be driven with DC voltage.
Features
- Excellent range (1:200)
- Very good response
- Compact valve design
- Port connection 1/8” or sub-base
Specifications
Seal Material
- EPDM
- FKM
Body Material
- Brass
- Stainless Steel
Pressure Range
- psi: 0 to 174 (kPa: 0 to 1,200, bar: 0 to 12)
Media
- Neutral Gases & Liquids
Flow Rate
- Water: 0.00006 to 0.090 Kvs (m³/hour)
Mounting Position
- Preferably with Actuator Upright
Port Connection
- Sub-base, G 1/8", 1/8" NPT
Orifice Size
- 0.001" to 0.944" (0.05 to 2 mm)
Hysteresis
- < 5 %
Repeat Accuracy
- < 0.25 % of Full Scale
Response Sensitivity
- < 0.25 % of Full Scale
- < 0.1 % FS with DN < 0.8 mm
Setting Range
- 1:200 (DN 0.8 to 2)
- 1:500 (DN 0.05 to 0.6)
Actuating Time (10…90 %)
- < 15 ms
Duty Cycle
- 100 % Continuous Operation
Ambient Temperature
- 55° C (131° F) - Max.
Operating Voltage
- 24 Vdc
Power Consumption
- Max 5 W
Maximum Coil Current
- 220 mA (at 5 W and 24 V coil)
PWM Frequency
- 1,500 Hz
Environmental Protection
- IP65
Approvals & Certifications
- UL
- UR
- USP
- FDA
Medium Temperature
- -30° to 90° C (-22° to 194° F)
