Model 1078 Rev B Pilot Operated Tank Blanketing Valve Vacu-Gard; 1" Size; Vertical Outlet Position, Integral Dip-Tube Sensing; Stainless Steel Body And Trim, Carbon Steel Diaphragm Cases, Stainless Steel Fittings And Tubing, Non-Stainless Steel Pressure Gauges When Required; Supply Pressure Gauge 0 - 200 PSIG, Tank Pressure Gauge 0 - 20 PSIG; Threaded 1" FNPT End Connections; 100% Flow Plug; Buna-N Soft Seats And Seals; 0.5" - 5.0" WC Range Spring; NACE Construction Per MR0175 With Stainless Steel Externa Pilot Filter