Model 1078 Rev B Pilot Operated Tank Blanketing Valve Vacu-Gard; 1" Size; Vertical Outlet Position. Remote Sensing; 304 SST Body With 316 SST Trim, All Wetted Parts Are SST;Cs Upper Diaphragm Case With SST Fittings And Tubing; Supply Pressure Gauge 0 - 100 PSI, Tank Pressure Gauge 0 - 10" WC; Threaded 1" FNPT End Connections; 25% Flow Plug; Fluorocarbon Elastomer (FKM) Soft Seats And Seals; 0.5" - 5.0" WC Range Spring; Stainless Steel External Pilot Filter