Positive displacement "acculobe" lobe type pump by johnson pump ltd. (uk), serial # 35120/a/05. Features pharmaceutical grade construction in 316 l stainless steel, 1/2" inlet and outlet with tri clamp connections, twin three wing lobes, mfg rates at 0. 02 l/rev, max 35 l/min, maximum product temperature 150 c, max cst 150,000, ehedg rated (european hygenic engineering and design group,