Bürkert - Close to you
Office /2
    • Main Office
      Burkert Middle East FZE
      Ras al Khaimah | United Arab Emirates

      Phone +971 7207 6696
      Fax +971 7207 6695
      E-Mail fnyrf.nr@ohexreg.pbz
    • Distributor
      Daly Fluid Technologies LLC – DFT
      Dubai | United Arab Emirates
      Phone +971 4887 8185
      Fax +971 4887 8184
      E-Mail fnyrf@qsgzr.pbz
  • Main Office
  • Headquarters
  • Systemhaus
  • Distributor
  • Office
  • Plant
We make ideas flow.

Control Head for the integrated mounting on process valves

Type 8691 / Ident No. 227254

Produkt-Foto Typ 8691

The depiction of the products may differ from the actual specific design.

  • Produkt-Foto Typ 8691
  • Produkt-Foto Typ 8691
  • Massbild
  • Massbild
  • Massbild
  • Massbild
  • Massbild
  • Massbild
  • Massbild
  • Massbild

Control head top 70 mm for actuator 210X

  • Contact-free inductive valve position registration(Teach function)
  • Coloured illuminated status display
  • Integrated control air routing
  • Fieldbus AS-Interface or DeviceNet (option)
  • With ATEX II cat. 3G/D approval

For selecting the correct product please refer to the technical data, images and notes for proper use according to the data sheet.

Product description

The Control Head Type 8691 is optimized for integrated mounting on the 21XX process valve series. The registration of the valve end position is done through a contact-free analog position sensor, which automatically recognises and saves the valve end position through the Teach function when starting up. The integrated pilot valve controls single or double-acting actuators. As an option a fieldbus interface, AS-Interface or DeviceNet, can be chosen.The design of the control unit and the actuator enables an internal control air channel without external tubings. Besides the electrical position feedback signal the status of the device is shown directly on the control head itself through coloured powerful LEDs showing a clear visible valve position status, even under dirty or dark environments. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing in food, beverage and pharmaceutical industries. Focused on wash down applications the IP rating is supported by a positive pressure inside the control head. Combined with Bürkert ELEMENT actuators the unique pilot valve system enables a compressed air recycling that avoids actuator chambers contamination from the environment.

Commodity Codes

Technical attributes

Type 8691
Function Control head
Valve function manual actuation Yes
Pneumatic function 1 double acting No
Pneumatic function 1 single acting Yes
QNn value (gas) 250 l/min
Temperature environment min -10 °C
Temperature environment max 55 °C
End position feedback internal 2 PCE
End position feedback external 0 PCE
End position feedback top yellow
End position feedback bottom green
For Actuator size 40 mm No
For Actuator size 50mm No
For Actuator size 63mm No
For Actuator size 70mm Yes
For Actuator size 80mm No
For Actuator size 90mm Yes
For Actuator size 100mm No
For Actuator size 125mm No
For Actuator size 130mm Yes
For Actuator size 175mm No
For Actuator size 225mm No
Port connection 1 type Inner thread
Port connection 1 thread type G
Port connection 1 thread marking 1/8
Electrical connection sort Plug - M12
Electrical connection type male
Electrical connection material Stainless steel
Voltage / rated voltage 29.5 V
Voltage / rated voltage 31.6 V
Supply system-internal No
Supply via BUS Yes
Supply via separating barrier No
AC voltage No
DC voltage Yes
Communication interface protocol AS-i
AS-i profile S-B.A.E
Mounting type ELEMENT drive
Protection type (IP max. with suitable connector) 65/67
Weight 1,270000 kg
Weight 1,270000 kg
Show full table Collapse table


Language / Country
3D_ANIMATION 3D-Animation - 8691 3D-PDF-DE-PV-C8691_pdf.pdf 3.5 MB DE
3D_ANIMATION 3D-Animation - 8691 3D-PDF-EN-PV-C8691_pdf.pdf 3.5 MB EN
SOW Initiation Files EDS A.02 00675687_008691_KONF_D.zip 5.1 kB
SOW Buerkert Communicator 2.4 00689176_BuerkertCommunicator_2_4.zip 47 MB
ABD EU-DoC|EU Declaration 1000149263-B_8691_EU-DoC.pdf 1.4 MB EN,FR,DE
DTS 8681, 869x, 879x Adaptionen DS8681-InstallKits-DE-DE.pdf 4.3 MB DE / DE
DTS 8681, 869x, 879x Install Kits DS8681-InstallKits-EU-EN.pdf 4.3 MB EN / EU
DTS Cabezal de control DS8691-ControlHead-ES-ES.pdf 1.6 MB ES / ES
DTS Steuerkopf DS8691-Standard-DE-DE.pdf 385.1 kB DE / DE
DTS Control Head DS8691-Standard-EU-EN.pdf 367.2 kB EN / EU
MAN Zulassung EX Typ 8690 MA8690-ApprovalEX-DE-DE.pdf 902 kB DE / DE
MAN Approval EX Type 8690 MA8690-ApprovalEX-EU-ML.pdf 951.5 kB EN / EU
MAN Certification EX Type 8690 MA8690-ApprovalEX-FR-FR.pdf 960 kB FR / FR
MAN Quickstart Control Head MA8691-Quickstart-EU-ML.pdf 2.2 MB EN,FR,DE / EU
MAN Manual de Instrucciones MA8691-Standard-ES-ES.pdf 808.4 kB ES / ES
MAN Control Head MA8691-Standard-EU-ML.pdf 3.9 MB EN,FR,DE / EU
MAN Add. Inform. Position Sensor MA8691-Supplement-EU-ML.pdf 686 kB EN,FR,DE / EU
MAN USB-Interface MA8694-Supplement-EU-ML.pdf 2 MB EN,FR,DE / EU
MAN Software Communicator MA8920-Software-DE-DE.pdf 963.7 kB DE / DE
MAN Software Communicator MA8920-Software-EU-ML.pdf 960 kB EN / EU
MAN Software Communicator MA8920-Software-FR-FR.pdf 975.3 kB FR / FR
Item No.
918038 round-plug fem. M12 4-pol. w.cable 5m PV