Stainless Steel Electric-Pneumatic Positioner Input Signal: 4-20 mA DC  Supply Pressure: 0.14-0.7 Mpa(1.4-7 Bar) Stroke: 10-150mm/0~90° Air Connection: PT(NPT) 1/4 Gauge Connection: PT(NPT) 1/8 YT-1050, the Electro Pneumatic positioner is used for operation of pneumatic valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20mA or split ranges.  - Simple zero and span adjustment  - No resonance between 5-200Hz  - Auto/Manual switch  - RA vs DA action and 1/2 split range setting by simple adjustment.  www.valve-cn.com