MK55 DIN PLGN W/LGHT Vacuum to 150 psig, NEMA Classification NEMA 4, Valve Vacuum Range 28 to 150 psig, Body Style Base-Mounted, Pilot Port Size 1/2 In. NPTF, Pilot Pressure 15 psi, Coefficient of Volume 5, Plug-In Electrical Connections, Shifting Technology Direct Hg.