Wika Instrument P/N 23334-30-99010-ST-HF-1FNPT, Type 233.34/990.10, Range 0-30 PSI, Gauge 4.5" SS Lower Liquid Filled, Diaphragm Seal 990.10 1"FNPT 316SS w/Teflon Gasket, Fill Halocarbon, CS Plated H'ware, NPT Threaded Diaphragm Seal Assembly