Burkert Servo-Assisted 2/2-Way Diaphragm Valve, 6281EV
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221 920

Series: 6281EV Servo-Assisted 2/2-Way Diaphragm Valve Brand: Burkert Fluid Control Systems
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Burkert Servo-Assisted 2/2-Way Diaphragm Valve, 6281EV Burkert Servo-Assisted 2/2-Way Diaphragm Valve, 6281EV
  • Version - Circuit Function A (NC, Normally Closed), Brass Body
  • Seal Material / Coil / Process Temperature - EPDM / Polyamide / -30° to 90° C (-22° to 194° F)
  • Port Connection / Orifice - G 2” / 40 mm
  • Voltage / Frequency - 24 V, 50/60 Hz

Specifications

Brand

Ambient Temperature Range

  • Maximum

Approvals & Certifications

  • European Gas Approval EPDM with KTW W270
  • IECEx PTB 14.0049 x Ex Mb IIC T4 Gb Ex Mb IIIC T130° C (266° F) Db (Explosion-proofed), IECEx EPS 16.0021 x Ex Eb Mb IIC T4 Gb Ex Mb Tb IIIC T130° C (266° F) Db (Coil & Junction Box)
  • PTB 14-ATEX-2023 x II 2 G Ex Mb IIC T4 Gb II 2D Ex Mb IIIC T130° C (266° F) Db (Explosion-proofed), 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 (Coil & Junction Box)
  • VDE Mark Approval According to DIN EN 60730

BSP Connection

  • G 1" Female
  • G 1/2" Female
  • G 1-1/2" Female
  • G 1-1/4" Female
  • G 2" Female
  • G 2-1/2" Female
  • G 3/4" Female
  • G 3/8" Female
  • 1" BSPT Female
  • 1/2" BSPT Female
  • 1-1/2" BSPT Female
  • 1-1/4" BSPT Female
  • 2" BSPT Female
  • 3/4" BSPT Female

Consumption

  • Power Consumption (DC Hot/Cold Coil): 9 W - Ex Coil (with Internal Rectifier) Circuit Function A & B
  • Power Consumption (Hold with Coil AC): 14 / 8 VA / W - Circuit Function A
  • Power Consumption (Hold with Coil AC): 16 / 7 VA / W - Circuit Function B
  • Power Consumption (Hold with Coil DC): 8/9.5 W (Hot/Cold Coil) - Circuit Function A & B
  • Power Consumption (Inrush AC): 24 VA - Circuit Function A & B
  • Power Consumption (Inrush, Hold with Coil AC): 9 VA / W - Ex Coil (with Internal Rectifier) Circuit Function A & B

Diaphragm Material

  • Diaphragm Holder (PPSGF40, DN 50): Brass
  • Diaphragm Holder (PPSGF40, DN 50): Stainless Steel
  • EPDM
  • FKM
  • NBR

Duty Cycle

  • 100 % Continuous Rating

Electrical Connectors

  • Tag Connector According to DIN EN 175301-803 Form A for Cable Plug Typical 2508

Electrical Contacts

  • Normally Closed
  • Normally Open

Enclosure, Body Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Brass According to DIN EN 50930-6

Environmental Protection

  • IP65 with Junction Box, Cable Plug & Cable Connection
  • IP66
  • NEMA 4X
  • Vibration-Proof

Flow Rate

  • Water: 3.8 to 40 Kv (m³/hour)

Insulation

  • Epoxy: Coil Isolation Class H
  • Polyamide: Coil Isolation Class B

Internal Part Material

  • Valve: Brass
  • Valve: Plastic (PPS)
  • Valve: Stainless Steel

Materials of Construction

  • Coil: Epoxy with FKM Seal
  • Coil: Polyamide with NBR, EPDM Seal
  • Stopper, Magnetic Core: 434 Stainless Steel

Mounting Position

  • Preferably with Actuator Upright

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 1-1/2" NPT Female
  • 1-1/4" NPT Female
  • 2" NPT Female
  • 2-1/2" NPT Female
  • 3/4" NPT Female

O-Ring Material

  • EPDM
  • FKM
  • NBR

Orifice Size

  • 0.511" to 1.968" (13 to 50 mm)

Override

  • Manual Override

Pressure Range

  • psi: 2.901 to 232.1 (kPa: 20 to 1,600, bar: 0.2 to 16)

Process Temperature

  • EPDM: -30° to 90° C (-22° to 194° F) [with Epoxy Coil to 100° C (212° F)]
  • FKM: 0° to 90° C (32° to 194° F) [(with Epoxy Coil to 120° C (248° F)]
  • NBR: -10° to 80° C (14° to 176° F)

Response Time

  • 0.1 to 4 seconds (Depending on Orifice & Differential Pressure)

Ring Material

  • Short Circuit Ring: Copper (Cu) with Brass Body
  • Short Circuit Ring: Silver (Ag) with Stainless Steel Body

Seat / Seal Material

  • Armature Seal: EPDM (Media: Oil & Fat-Free Fluids, Hot Water, Aceton, Aqueous Alkali Solution)
  • Armature Seal: FKM (Media: Hot Air, Per-Solution)
  • Armature Seal: NBR (Media: Neutral Fluids, Compressed Air, Water)

Solenoid Type

  • 2/2-Way

Spring Material

  • 301 Stainless Steel, 1.4310

Tolerance

  • Voltage Tolerance: ± 10 %

Voltage

  • 230 V / 50/60 Hz / UC
  • 24 V / 50/60 Hz / UC
  • 24 Vdc

Documentation

Data Sheets

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