Dwyer PTGD-AC07A is a piston-type gauge designed for measuring differential pressure. It can withstand temperatures of up to 176°F (80°C) and has an accuracy of ±2% FS. Suitable for use with compatible gases and liquids, it can be mounted in any position. The wetted materials include aluminum or 316 SS for the gauge body, aluminum or 316 SS for the piston, and Buna-N or PTFE for the seals. The gauge has a pressure limit of 3000 psi (206 bar) for aluminum body and 6000 psi (413 bar) for SS body. It comes with 1/4" female NPT end connections as standard, with the option for back or bottom connections. The gauge is available in two sizes, 2.5" (63 mm) or 4.5" (115 mm), and features an acrylic window for easy reading.