(January 6, 2012)



Burkert has introduced a range of 2/2 stainless steel ball valves, which, available either manual or with quarter-turn single- or double-acting rotary actuators, have the facility for low-cost positioning control via Burkert’s side-control positioner.

Suitable for use up to 120°C (and down to -10°C), the 2652 and 2655 ball valves are equipped with stainless steel PTFE seals for use with gaseous and liquid media.

They are supplied with quarter-turn pneumatic rotary actuators, which have optical position indicators, mechanical feedback and pilot-valve connections for NAMUR pilot valves, or Burkert side-control positioners.

For more precise valve operation, Burkert offers its low-cost type 8791 Basic positioner, for which further information is listed below.

Key information:
Protection class IP65/67
Stainless steel construction
Supplied in port sizes from ¼ to 4in
Available threaded, flanged, weld or clamp ended
Can be mounted in various orientations to linear and rotary actuators, according to IEC534-6 and VDI/VDE 3845 (Namur), as well as to Burkert process valves
Offered at a price comparable to analogue devices
Designed to be simple to start up and operate
No internal air consumption
System resolution across its 0/4–20mA operating range is ≤1 per cent

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