... air, oil, water, other pressure media which have no effect on bronze.1-1/2”(40mm), 2”(50mm), ... upon requestNPT, BSP, PT, and other special connection thread availableBlack metal steel, black ABS plastic, and stainless ... or dry)NPT, BSP, PT and other special connection thread availablePolycarbonate, safety glass lens availablePsi, bar, Mpa, kPa ... stem lengths, connections and configurations pressure gauge