ETS 175L - 250L - 400L - 500L is a series of electric expansion valves for precise liquid injection in to evaporators for air conditioning and refrigeration applications. The valve comes with two piston options, a linear and a S-shaped characteristics. The design is fully balanced, providing bi-flow feature as well as tight shut-off function in both flow directions. The valve design uses bi-polar drive providing very precise flow regulation. ETS 175L - 250L - 400L - 500L valves are compatible with electronic control solutions from Danfoss and other manufacturers.