The Solfrunt Model 1981 Advantage is a 4.5-inch process pressure gauge with 316L stainless steel wetted surfaces and a seamless bourdon tube design. It has a PET turret-style case to provide impact strength and resistance to chemicals.

The device is designed to offer the advantages of a liquid-filled pressure gauge in a dry solid-front gauge. It provides engineers with a dampened movement option that has many of the benefits of a liquid-filled gauge without the need to periodically fill or replace the liquid.

It can be liquid filled at the factory, by a local stocking distributor, or by using a liquid fill kit.