Model 1078 Rev B Pilot Operated Tank Blanketing Valve Vacu-Gard; 1" Size; Horizontal Outlet Position, Remote 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, No Tank Pressure Gauge; 2" x 1" Class 150 Reducing Flange End Connections; 50% Flow Plug; Buna-N Soft Seats And Seals; 0.5" - 5.0" WC Range Spring; Aluminum/Zinc External Pilot Filter