FB21-1H pressure switch, high pressure switch, air switch(up to 250psi) . The sturdy construction of FB21 pressure switch is designed for the requirements of large pressure, heavy duty ... Female NPTNCOther Pressure Settings and Differential Pressure are available on request.Conversion: 1Mpa =10bar,1bar = 14.5PSI, 1Kgf/cm2 = 14.2PSI pressure control switch(FB21)