Hydraulically operated diaphragm drives control valves that reduce higher upstream pressure to lower downstream pressure at a fixed rate. The Bermad 700 Series valves are hydraulic inclined globe valves with seat assembly and double chamber combination actuators that can be removed from the body as a single integral unit. The valve's hydrodynamic body is designed for unimpeded flow paths and provides superior and efficient regulation for high pressure differential applications. The 700 Series operates under difficult operating conditions with low cavitation and noise. They are made of high quality materials suitable for different mining applications.