... , Competitive Price, OEM Service; Pressure Gauge:1. Type: Liquid filled pressure gauges2. Case sizes: 1.5'', 2'', 2.5'', 3'', 4'' ... ;3. Case Material: 304 stainless steel case, it can take with back flange; Bezel material: Stainless steel bezel4. Tube and socket ... : Phosphor bronze and brass5. Liquid Filling: With or without liquid, glycerine., silicone oil6. Connection: 1/8, 1 ...