Model 1078 Rev B Pilot Operated Tank Blanketing Valve Vacu-Gard; 1" Size; Vertical Outlet Position. Remote Sensing; Stainless Steel Body, Trim, Diaphragm Cases, Fittings, And Tubing; No Pressure Gauges; Special End Connections; 100% Flow Plug; Fluorocarbon Elastomer (FKM) Soft Seats And Seals; 0.5" - 5.0" WC Range Spring; Stainless Steel External Pilot Filter; Per SPQ 56517 1" ASME 150 Threaded Flange End Connections With Special Face To Center Dimensions of 4.06" x 4.06"