Bürkert
Direct-acting 2-way standard solenoid control valve
Type 2871 / Article No. 255581
Product description
The direct-acting solenoid control valve Type 2871 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.).
- Commodity Codes
- 84818079
- Country
- DE
Technical attributes
Name |
Value |
Unit |
|---|---|---|
| Type | 2871 | |
| Valve function | A - normally closed - inlet port 1 (P/NC) | |
| Fluidic port connection number | 2 | |
| Valve function number of switching positions | 2 | |
| Actuator type | Plunger valve | |
| Operation | direct-acting | |
| Main valve operating principle | Globe valve | |
| Switch function | constant | |
| Main valve orifice 1 (P) (mm) | 2 | mm |
| Main valve orifice 1 (inch) | 5/64 inch | |
| Sealing toward outside material | FKM (Fluor rubber) | |
| Seat seal material category | Elastomer | |
| Seat seal material | FKM (Fluor rubber) | |
| Main valve wetted material | Brass | |
| Core guide | Form spring | |
| Core guide 2 | Bush | |
| Vacuum version | No | |
| Analysis version | No | |
| Oxygen version | No | |
| Steam version | No | |
| Media separation | No | |
| Flow | Below seat | |
| Port connection 1 type | Flanged | |
| Port connection 1 flange | Bürkert flange 20 x 20 version A1 | |
| Port connection 2 type | Flanged | |
| Port connection 2 flange | Bürkert flange 20 x 20 version A1 | |
| Voltage / rated voltage | 24 | V |
| Voltage / rated voltage | 24 | V |
| AC voltage | No | |
| DC voltage | Yes | |
| Voltage tolerance positive | 10 | % |
| Voltage tolerance negative | 10 | % |
| Coil type | block bolted | |
| Coil insulation material (encasement) | Epoxy | |
| Coil size | 20 | mm |
| Coil resistance | 82 | Ohm |
| Protection type (IP max. with suitable connector) | IP65 | |
| Thermal insulation class of the actuator | H | |
| Rated power consumption | 5 | W |
| Electrical connection sort | Wire strand | |
| Electrical connection number of contacts | 2 | |
| Electrical connection type | male | |
| Cable plug in delivery | not included | |
| Electrical connection wire length | 300 | mm |
| Electrical connection material | FEP (Fluorinated ethylene-propylene copolymer) | |
| Electrical connection lead 1 colour | white/blue | |
| Electrical connection lead 2 colour | white/blue | |
| Electrical connection wire cross-section | AWG 24 | |
| Electrical connection wire cross-section (mm²) | 0,55 | mm² |
| Electrical connection position | via inlet | |
| Kv value (water) | 0,09 | m3/h |
| QNn value (gas) | 97 | l/min |
| PWM frequency min. | 800 | Hz |
| PWM frequency max. | 1.000 | Hz |
| Operating range | 1:100 | |
| Nominal operation/Duty cycle | 100 | % |
| Nominal pressure min | -1 | bar |
| Nominal pressure max | 3 | bar |
| Differential pressure max | 3 | bar |
| Temperature medium min | -10 | °C |
| Temperature medium max | 90 | °C |
| Temperature environment min | -10 | °C |
| Temperature environment max | 55 | °C |
| Mounting position | any | |
| Medium-contacting part core material | Stainless steel | |
| Medium-contacting part stopper material | Stainless steel | |
| Medium-contacting part core guide tube material | Stainless steel | |
| Medium-contacting part core guide element 1 material | Stainless steel | |
| Medium-contacting part core guide element 2 material | PEEK (Polyetheretherketone) | |
| Medium-contacting part spacer sleeve material | Stainless steel | |
| Mounting (flange) type | Metric screws | |
| Mounting (flange) material | Steel | |
| Weight | 0,085 | kg |
Can be combined with
Applications & Tools
Downloads
Data Sheets
Description |
Filesize |
Language / Country |
|
|---|---|---|---|
|
Type 2871 data sheet | electromagnetic operated proportional valve | 1 MB | EN / EU |
|
|
Typ 2871 Datenblatt | elektromagnetisch betätigtes Proportionalventil | 1 MB | DE / DE |
|
|
Type 2871 fiche technique | Électrovanne proportionnelle à plongeur, largeur 20 mm | 790 kB | FR / FR |
User Manuals
Description |
Filesize |
Language / Country |
|
|---|---|---|---|
|
|
Operating Instructions Type 2861 286X 287X | Proportional valves with control electronics | 388 kB | EN,FR,DE / EU |
|
|
Supplement Type 8605 2836 2861 2863 2865 2871 2873 2875 6024 6223 | PWM frequencies | 79 kB | EN,FR,DE / EU |
EU Declaration of Conformity
Description |
Filesize |
Language / Country |
|
|---|---|---|---|
|
|
EU-DoC|EU Declaration | 890 kB | EN,FR,DE |
Interactive Animation
Description |
Filesize |
Language / Country |
|
|---|---|---|---|
|
|
3D-Animation - 2871 | 1 MB | DE |
|
|
3D-Animation - 2871 | 1 MB | EN |