DTI 18 diaphragm seal is made with material including, spécial plastic to provide to against the acid fluid for application in customers device. It's easy to assemble with pressure gauges, pressure switches and pressure transducers. Technical Data Instrument connection: Female thread W to Vz" BSP or NPT Membrane size: 055, 075 Process connection: Vz* to 2' Flange type, JIS, ANSI, DIN available Measurement range: -760mmFlg - 0 - 10 kg/cm2 (075 Membrane) 0-6 kg/cm2 (055 Membrane) Max. température: Up to 120°C Material: Upper housing - SS316 (standard); Low housing - P.V.C, P.P, PVDF, Teflon available Membrane material: SS316L+Teflon lining (standard); Options - Hastelloy C276, Tantalum, and others on requset.