Red brass body with NPT-threaded end connections;Low seat leakage rate (0.05 percent of CV);Spring-loaded, self-adjusting packing;50:1 rangeability per VDI/VDE 2173;Accurate positioning to ensure state-of-the-art temperature control;Directly coupled electric and pneumatic actuators for easy mounting;Sizes range from 1/2 in. to 2 in.;Valve designs provide equal percentage flow characteristic for water and linear flow characteristic for steam;Repack and rebuild kits for field servicing