Burkert 6281 Servo-assisted 2/2 Way Diaphragm Valve


Burkert 6281 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.

Burkert 6281 Servo-assisted General Descriptions

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. This product can be combined with Cable Plug Type 2518.


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


Product properties

Dimensions Detailed information can be found in chapter “5. Dimensions” on page 5. Of datasheet
Body Brass acc. to DIN EN 50930-6, stainless steel (dezincification resistant on request)
Stainless steel, Brass, Plastic (PPS)
Inner valve parts NBR, EPDM, FKM
Nominal diameter DN10…DN50
Thermal insulation class of solenoid Polyamide class B
Epoxy class H

Performance data

Duty cycle 100% continuous rating
Response times 0.1…4 sec. (depending on orifice and differential pressure)
Electrical data
Voltage tolerance ±10%
Operating voltage 024/DC, 024/UC, 024/50…60 V/Hz, 230/UC, 230/50…60 V/Hz
Electrical connection Tag connector acc. to DIN EN 175301-803 Form A for cable plug Type 2518 (see “8.4. Ordering chart accessories” on page 16 of datasheet)

Media data

NBR Neutral fluids, e.g. compressed air, water
EPDM Oil and fat-free fluids, hot water, aceton, aqueous alkali solution
FKM Hot air, per-solution
Media temperature
NBR -10 °C…+80 °C
EPDM -30 °C…+90 °C (with epoxy coil to +100 °C)
FKM 0 °C…+90 °C (with epoxy coil to +120 °C)
Approvals and certificates
Directives CE, EAC

Approvals and certificates

Directives CE, EAC

Environment and installation

Installation As required, preferably with actuator upright
Degree of protection IP65 with cable plug, cable connection and terminal box
Ambient temperature (max.) +55 °C


ATEX:EPS 18 ATEX 1232 X IECEx: IECEx EPS 18.0110 X
·         II 2G Ex mb IIC T4 Gb ·         Ex mb IIC T4 Gb
·         II 2D Ex mb IIIC T130 C Db ·         Ex mb IIIC T130 ºC Db
·         II 2G Ex eb mb IIC T4 Gb ·         Ex eb mb IIC T4 Gb
·         II 2D Ex mb tb IIIC T130 ºC Db ·         Ex mb tb IIIC T130 ºC Db

Download Datasheet: Type 6281 Servo-assisted 2/2 Way Diaphragm Valve

Reference : burkert.com

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