Product Description Dia-Flo diaphragm valves are engineered for tough applications in the chemical processing, mining, power generation, pulp and paper, and water treatment industries. Dia-Flo weir-type diaphragm valves are utilized to handle media which is corrosive, erosive, or contains solids which tend to clog other types of valves. The weir-style diaphragm valve is used effectively as a control valve or where manual throttling of a fluid is desired Product Features (1)Bubble tight shut-off – Tight shut-off across weir is independent of line pressure. (2)Bonnet isolation - Separates working components of valve from process fluids. (3)Packing-less design – No packing gland adjustments or stem seal leaks of dangerous media. (4)In-line maintenance – Bonnet assembly can be removed without taking valve out of line. (5)Streamlined fluid passage – Body design has minimal pockets or cavities where media can accumulate or entrap.China Steam Conditioning website:http://www.beiercontrolvalve.com/severe-service/steam-conditioning/