The OBS “BAG” Series is the only integral molded one-piece plastic pressure gauge with a large 3" dial, offering superior accuracy and durability for pressure measurement in corrosive environments. Like the other OBS series gauges, the “BAG” Series features a gauge guard to protect against corrosive media through an isolator.

The OBS “BAG” Series Pressure Gauges feature a one-piece design and come factory pre-filled, achieving an industry-leading accuracy of 1.5%. By eliminating the need for manual filling, users save time and effort. The movable color range tabs (red, yellow, and green) serve as visual pressure alerts for filter or bag change-outs.

Available in PVC, PP, and PVDF, the OBS “BAG” Series is equipped with a Teflon® diaphragm, ensuring total corrosion resistance. The fully plastic housing guarantees that the gauge will withstand even the most corrosive environments.