1" SIZE MODEL 1078 PILOT OPERATED VACU-GARD VERTICAL OUTLET POSITION. REMOTE SENSING; 316 / 316L SST DUAL MARKED BODY, TRIM, SST DIAPHRAGM CASES WITH SST FITTINGS AND TUBING; NO GAUGES; SPECIAL END CONNECTIONS; 50% FLOW PLUG; FLUOROCARBON ELASTOMER (FKM) SOFT SEATS & SEALS; 1 - 1.5 PSIG RANGE SPRING; SST EXTERNAL PILOT FILTER; REV LEVEL B; PER SPQ NUMBER 56517 WITH THREADED 1" 150# RF FLANGES WITH SPECIAL FACE TO FACE DIMENSIONS OF 4.06 X 4.06 REQUESTED BY CUSTOMER.