The Bourdon tube pressure gauge is constructed with a case from stainless steel and wetted parts from copper alloy. The liquid filled model meets the requirements of the international industry standard EN 837-1 for Bourdon tube pressure gauges. Due to the liquid filling in the case, the pressure element and movement are efficiently damped. Therefore, these instruments are particularly suited to measuring points with high dynamic loads, such as fast load cycles. Perfect for our WaterGuard medium pressure cleaning system.