Karl Dungs VDK Valve Proving System

Karl Dungs VDK Valve Proving System

  • Max. Operating pressure: 5 PSI
  • Enclosure rating NEMA Type 12


The VDK is a valve proving system for safety shutoff valves. It verifies that both safety shutoff valves in a gas train are fully closed before a system start-up or after system shutdown when wired and interlocked to a suitable flame safeguard control. The VDK will halt the start-up sequence and prevent ignition when the VDK detects an open automatic shutoff valve or valve leakage exceeding the detection limit.

The VDK is recommended for industrial and commercial heating applications.

Technical Documentation

VDK Valve Proving System Technical Documentation