Dwyer PTGD-AC08A is a differential pressure piston-type gauge, suitable for use with compatible gases and liquids. It has an accuracy of ±2% FS and can be mounted in any position. The wetted materials include aluminum or 316 SS for the body and piston, 302 SS for the spring, Buna-N or PTFE for the seals, and Nylon 6 30% glass filled case. It has a pressure limit of 3000 psi (206 bar) for aluminum body and 6000 psi (413 bar) for SS body. The process connection is 1/4" female NPT, with back or bottom connections available. It comes in two dimensions - 2.5" (63 mm) or 4.5" (115 mm) with an acrylic window.