• 316L Seamless Stainless Steel Bourdon tube and socket
The 1981 and 1981 Advantage 4-½” process gauges have all 316L stainless steel wetted surfaces with a seamless Bourdon tube. The 1981 Advantage includes a dampened movement option to provide users with some of the benefits of liquid filling. These models have PET turret style cases, integral walls between the measuring elements and windows and a pressure relieving backs for increased safety. The PET case provides superior impact strength and a broad spectrum of chemical resistance making these gauges perfect for chemical and petrochemical processing applications. Available dry, with a dampened movement, or liquid filled and supplied in 26 vacuum, compound and pressure ranges.