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; 1 - 1.5 PSIG Range Spring; Aluminum/Zinc External Pilot Filter