2/2 Way Diaphragm Valve - Explosion Proof & Standard (Servo-assisted) Burkert type 6281

Approved for Hazardous Locations. CSA, Class 1, Div. 1 and 2, Groups A,B,C and D. Zone 0, Zone 1 and zone 2.

Servo-assisted diaphragm with diameter of up to DN50.

Hazarous location valve
  • Description
  • Specification
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The Burkert type 6281 2/2 Way Diaphragm Valve is a servo-assisted solenoid valve of the S.EV series. A minimum differential pressure is always required for the function of the valve.

Various diaphragm material combinations and methods of operation are available depending on the application.

The standard brass housing satisfies all European drinking water requirements. Dezincification-resistant brass is available for other markets.

The housing offering is rounded out by a stainless steel version. For reduced energy requirement, all coils can be delivered with electronic power reduction.

The valve can be equipped with manual override for easy maintenance and commissioning.

In combination with a plug in accordance with DIN EN 175301 – 803 Form A, the valves satisfy protection class IP65 – in combination with a stainless steel housing NEMA 4X.
 

  • Servo-assisted 2/2 Way diaphragm valve with diameter of up to DN50
  • Vibration-proof, central screwed coil system
  • Damped design for quiet closing
  • Service-friendly manual override
  • Explosion-proof versions
Solenoid Valves

Insertion Flowmeter Specifications

Spec Value
Non wetted parts
Housing cover PC, glass fibre reinforced
Front panel folio Polyester
Female cable plug/male fixed plug PA
M12 male fixed plug PA or PA and CuZn, nickel-plated
Wetted parts
Seal FKM standard (EPDM included, but not mounted)
Sensor-fitting body, sensor armature Brass, stainless steel, PVC, PP or PVDF (depending on S030 version)
Axis and bearings Ceramics (Al2O3)
Paddle wheel PVDF
Dimensions Detailed information can be found in chapter “4. Dimensions” on page 7
Measuring principle Paddle wheel
Compatibility Any pipe from DN06…DN65 which are fitted with Bürkert S030 Inline sensor-fitting. For the selection of the nominal diameter of the Inline sensor-fittings, see data sheet Type S030 
Display 8-digit LCD with backlighting
Pipe diameter DN06…DN65
Voltage supply cable
    Max. 100 m length, shielded
  • For female cable plug (supplied): external diameter of wire: 6…7 mm, cross section of wires: 0.14…0.5 mm²
  • For 5-pins M12 female plug (not supplied): external diameter of wire: 3…6.5 mm, cross section of wires: max. 0.75 mm²
  • For 8-pins M12 female plug (not supplied): external diameter of wire: 5.9 mm, cross section of wires: 0.25 mm²
Flowmeter Performance data
Measuring range 0.3…10 m/s
Measurement deviation Teach-In: ± 1 % of the measured value.) (at Teach-In flow rate value) Standard K-factor: ± 3 % of the measured value.)
Linearity ± 0.5 % of full scale
Repeatability ± 0.4 % of the measured value
Operating mode Threshold: window or hysteresis
Electrical Data
Power supply 12…36 V DC ± 10 %, filtered and regulated Connection to main supply: permanent (through external SELV (Safety Extra Low Volt- age) and LPS (Limited Power Source) power supply)
Power source (not supplied) Limited power source according to UL/EN 60950-1 standards or limited energy circuit according to UL/EN 61010-1 §9.4
DC reverse polarity protection Yes
Current consumption ≤ 80 mA (no load)
Output signal Transistor NPN and/or PNP, open collector
  • 700 mA max. (500 mA max. per transistor if both transistor outputs are wired)
  • 0…300 Hz
  • Operation and thresholds can be parametered
  • NPN-output: 0.2…36 V DC
  • PNP-output: power supply
  • Protection against short circuits
Output signal Relay Non UL device:
  • single relay output: 250 V AC/3 A or 30 V DC/3 A, operation and thresholds can be parametered
  • relay output and 4…20 mA current output: 48 V AC/3 A or 30 V DC/3 A, operation and thresholds can be parametered
UL device:
  • 30 V AC/42 Vpeak/3 A or 60 V DC/1 A, operation and thresholds can be parametered
Process value 4…20 mA, galvanic insulation
  • Loop impedance max.: 1300 Ω at 36 V DC, 1000 Ω at 30 V DC, 700 Ω at 24 V DC, 450 Ω at 18 V DC, 200 Ω at 12 V DC
  • Response time (10…90 %): 3 s with filter 2 (default setting
Full details can be found in the 8032 Data Sheet

The Burkert type 6281 2/2 Way Diaphragm Valve is a servo-assisted solenoid valve of the S.EV series. A minimum differential pressure is always required for the function of the valve.

Various diaphragm material combinations and methods of operation are available depending on the application.

The standard brass housing satisfies all European drinking water requirements. Dezincification-resistant brass is available for other markets.

The housing offering is rounded out by a stainless steel version. For reduced energy requirement, all coils can be delivered with electronic power reduction.

The valve can be equipped with manual override for easy maintenance and commissioning.

In combination with a plug in accordance with DIN EN 175301 – 803 Form A, the valves satisfy protection class IP65 – in combination with a stainless steel housing NEMA 4X.
 

  • Servo-assisted 2/2 Way diaphragm valve with diameter of up to DN50
  • Vibration-proof, central screwed coil system
  • Damped design for quiet closing
  • Service-friendly manual override
  • Explosion-proof versions
Solenoid Valves

Insertion Flowmeter Specifications

Spec Value
Non wetted parts
Housing cover PC, glass fibre reinforced
Front panel folio Polyester
Female cable plug/male fixed plug PA
M12 male fixed plug PA or PA and CuZn, nickel-plated
Wetted parts
Seal FKM standard (EPDM included, but not mounted)
Sensor-fitting body, sensor armature Brass, stainless steel, PVC, PP or PVDF (depending on S030 version)
Axis and bearings Ceramics (Al2O3)
Paddle wheel PVDF
Dimensions Detailed information can be found in chapter “4. Dimensions” on page 7
Measuring principle Paddle wheel
Compatibility Any pipe from DN06…DN65 which are fitted with Bürkert S030 Inline sensor-fitting. For the selection of the nominal diameter of the Inline sensor-fittings, see data sheet Type S030 
Display 8-digit LCD with backlighting
Pipe diameter DN06…DN65
Voltage supply cable
    Max. 100 m length, shielded
  • For female cable plug (supplied): external diameter of wire: 6…7 mm, cross section of wires: 0.14…0.5 mm²
  • For 5-pins M12 female plug (not supplied): external diameter of wire: 3…6.5 mm, cross section of wires: max. 0.75 mm²
  • For 8-pins M12 female plug (not supplied): external diameter of wire: 5.9 mm, cross section of wires: 0.25 mm²
Flowmeter Performance data
Measuring range 0.3…10 m/s
Measurement deviation Teach-In: ± 1 % of the measured value.) (at Teach-In flow rate value) Standard K-factor: ± 3 % of the measured value.)
Linearity ± 0.5 % of full scale
Repeatability ± 0.4 % of the measured value
Operating mode Threshold: window or hysteresis
Electrical Data
Power supply 12…36 V DC ± 10 %, filtered and regulated Connection to main supply: permanent (through external SELV (Safety Extra Low Volt- age) and LPS (Limited Power Source) power supply)
Power source (not supplied) Limited power source according to UL/EN 60950-1 standards or limited energy circuit according to UL/EN 61010-1 §9.4
DC reverse polarity protection Yes
Current consumption ≤ 80 mA (no load)
Output signal Transistor NPN and/or PNP, open collector
  • 700 mA max. (500 mA max. per transistor if both transistor outputs are wired)
  • 0…300 Hz
  • Operation and thresholds can be parametered
  • NPN-output: 0.2…36 V DC
  • PNP-output: power supply
  • Protection against short circuits
Output signal Relay Non UL device:
  • single relay output: 250 V AC/3 A or 30 V DC/3 A, operation and thresholds can be parametered
  • relay output and 4…20 mA current output: 48 V AC/3 A or 30 V DC/3 A, operation and thresholds can be parametered
UL device:
  • 30 V AC/42 Vpeak/3 A or 60 V DC/1 A, operation and thresholds can be parametered
Process value 4…20 mA, galvanic insulation
  • Loop impedance max.: 1300 Ω at 36 V DC, 1000 Ω at 30 V DC, 700 Ω at 24 V DC, 450 Ω at 18 V DC, 200 Ω at 12 V DC
  • Response time (10…90 %): 3 s with filter 2 (default setting
Full details can be found in the 8032 Data Sheet