The Model 659 Liquid Fillable Pressure Gauge provides users with a solid-front case design and pressure-relieving back design in all stainless steel construction. This gauge is NEMA 4X / IP67 compliant for increased durability.

These pressure gauges are available in both 2½in or 4"in sizes, in panel mount and low mount configurations. The liquid fill minimizes the effect of these severe environments, protects the gauge internals, and provides continuous lubrication on the mechanism, all adding up to extended service life. Liquid filling also provides greater protection of the gauge internals from corrosive atmospheres.

The 659 is available dry or liquid-filled with glycerin, mineral oil, or silicone DC-200.

Applications: Chemical and petrochemical processing, offshore equipment, exploration, petroleum storage.