A range of 2/2 stainless steel ball valves have been introduced by Burkert Fluid Control Systems. The valves are available manual, with quarter-turn single or double-acting rotary actuators. The 2652 and 2655 ball valves have stainless steel PTFE seals for use with liquids and gas and can be used in temperatures from -10°C to 120°C. The quarter-turn pneumatic rotary actuators have pilot-valve connections for NAMUR pilot valves or Burkert side-control positioners, mechanical feedback and optical position indicators. Burkert also offers its 8791 Basic positioner for more precise valve operation. The valve is available flanged, weld, threaded or clamp ended, supplied in port sizes from ¼ to 4in and can be mounted in various orientations to rotary and linear actuators.