The Jordan Valve Mark 67 Series is for critical pressure reducing applications. It provides greater accuracy and lower offset than can be achieved with a self-operated regulator.
The Mark 67 regulator combines the short stroke of the sliding gate with the action of a pilot valve to create a faster, more accurate (meaning less droop as your flow increases) response.
This allows for higher accuracy in a self-contained valve when control systems are not an option.
Download the Mark 67 Series datasheet.