Ashcroft^® 1130 Series Differential Pressure Gauge uses a piston design where small migration of the process media is permissible. The 1130 series is recommended for high differential and high static pressures up to 6000psi. Body materials are available in Aluminum, Brass, and Stainless Steel, with Buna, Viton, or EPDM seals. The dial size offering for the 1130 series ranges from 2" to 6" and is offered dry or liquid (glycerin) filled. The 1130 series is typically used for filtration monitoring, hydraulics, flow rate, pump performance, and/or measuring pressure drop.