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6240 Servo-Assisted 2/2-Way Piston Solenoid Valve
Brand: Burkert Fluid Control Systems
The 6240 valve is a servo-assisted plunger valve. The stopper and plunger guiding tube are welded together to enhance pressure resistance and leak-tightness. Various seal material combinations are available depending on the application.
The housing design and surface quality enable maximum flow rates. The coils are moulded with chemically resistant epoxy. An optional sliding ring bearings increases the life cycle with dry gases.
Kick and Drop electronics are available for over-excitation (plug 2511) and reduced electrical power consumption in operation.
In combination with a plug in accordance with DIN EN 17301-803 Form A, the valves satisfy protection class IP65. Stainless steel valves satisfy NEMA 4X.
Features- Servo-assisted and compact piston valve with diameter of up to DN12
- Vibration-resistant, screwed coil system
- Increased leak-tightness with welded plunger guiding tube
- Safe opening with hard-coupled piston system
- Explosion proof versions
Specifications
Ambient Temperature Range
- Maximum
Approvals & Certifications
- ATEX: PTB 14-ATEX-2023 x II 2 G Ex Mb IIC T4 Gb II 2D Ex Mb IIIC T1 35° C (95° F) Db, EPS 16-ATEX-1046 x II 2 G Ex Eb Mb IIC T4 Gb II 2D Ex Mb Tb IIIC T130° C (266° F) Db
- Gas Transportation DIN EN 3394-1
- IECEx PTB 14.0049 x Ex Mb IIC T4 Gb Ex Mb IIIC T1 35° C (95° F) Db, 16.0021 x Ex Eb Mb IIC T4 Gb Ex Mb Tb IIIC T130° C (266° F) Db
BSP Connection
- G 1/2” Female
- G 1/4” Female
- G 3/8” Female
- 1/4” BSPT Female
- 3/8” BSPT Female
Cable Material
- Polyolefin Copolymer Crosslinked Electron Beam
Consumption
- Power Consumption (AC): 18-37 VA / W (Hold)
- Power Consumption (AC): 32 to 105 VA (Inrush)
- Power Consumption (AC): 8-18 W (Hold)
- Power Consumption (DC): 10-16 W (Hot Coil)
- Power Consumption (DC): 12-21 W (Cold Coil)
Duty Cycle
- 100 % Continuous Rating
Electrical Connectors
- 3 metres Moulded Cable
- Tag Connector According DIN EN 175 301-803 Form A for Cable Plug Typical 2508
Electrical Contacts
- Normally Closed
Enclosure, Body Material
- 316L Stainless Steel, 1.4401
- Brass
Environmental Protection
- Explosion-proof
- IP65 with Cable Plug
- IP66
- NEMA 4X with Cable Plug 2508 or 2509 - Stainless Steel Version
Flow Rate
- Water: 0.6 to 2.2 Kv (m³/hour)
Insulation
- Coil Insulation Class H
Materials of Construction
- Armature Guide Tube: 305 Stainless Steel, 1.4303
- Coil: Epoxy
- Junction Box: Aluminum
- Safety Lock: Polyphenylene Sulfide
- Stopper, Core: 434 Stainless Steel (1.4113)
Media
- Compressed Air
- Hydraulic Oil
- Neutral Liquids & Gases
- Steam (High Temperature)
- Water
Mounting Position
- Preferably with Actuator Upright
NPT Connection
- 1/4” NPT Female
- 3/8” NPT Female
Nut & Bolt Material
- Nut: 303 Stainless Steel, 1.4305
- Nut: PTFE - Stainless Steel Version
- Nut: Steel (Surface Finish Thick Film Passivated) - Brass Version
Operating Voltages
- 230 V / 50 Hz
- 24 V / 50 Hz
- 24 Vdc
Orifice Size
- 0.236” to 0.472” (6 to 12 mm)
Piston Material
- 303 Stainless Steel, 1.4305
- Brass
- EPDM
- FKM - High Pressure Versions
- PEEK
- PTFE Carbon-Filled - High Temperature, Pressure Versions
- Stainless Steel
Pressure Range
- psi: 0 to 40 (kPa: 0 to 275, bar: 0 to 2.75)
Process Temperature
- EPDM: -30° to 120° C (-22° to 248° F)
- FKM: -10° to 140° C (14° to 284° F)
- PTFE / PEEK (DN 12): -40° to 140° C (-40° to 284° F)
- PTFE / PEEK (DN 6): -40° to 180° C (-40° to 356° F)
Response Time
- Closing: 40 to 100 milliseconds (Pressure Decrease 100 to 10 %)
- Opening: 10 to 40 milliseconds (Pressure Build-Up 0 to 90 %)
Ring Material
- Guide Ring: PTFE Carbon-Filled
- Shading Ring: Copper
- Shading Ring: Silver
Seat / Seal Material
- Seal: EPDM - High Pressure Versions
- Seal: FKM - High Temperature Versions
- Seal: PEEK - High Temperature Versions
- Seal: PTFE - High Temperature Versions
Size
- Coil Size: 1.259” to 1.653” (32 to 42 mm)
Solenoid Type
- 2/2-Way
Spring Material
- 301 Stainless Steel, 1.4310
Tolerance
- Voltage Tolerance: ± 10 %
Viscosity
- Maximum