Dungs VDK Valve Proving System

  • Max. Operating pressure: 5 PSI
  • Enclosure rating: NEMA 12 (Model S06), IP40 (Model S02)
  • Sizes: 1/4″ NPT (Model S06), 1/2″Rp (Model S02)
Buy Now


The Dungs 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.

Dungs VDK 200A is recommended for industrial and commercial heating applications. The VDK 200A is the means for proof of closure and normally open vent line alternative.  There are 2 Types: S02 (CE Approved and IP40), and S06 (UR, CSA and FM Approved, NEMA 12).

Ask us for engineering or product support.
UR, CSA and FM – for S06 VDK Model
CE Approved – for S02 VDK Model

VPS means Valve Proving System

253734 – VDK 200A S06, VPS pipe mount, 120V
211222 – VDK 200A S02, VPS pipe mount, 230V
211224 – VDK 200A S02, VPS pipe mount, 110V
224098 – VDK Cover

Technical Documentation

VDK 200A S06, Valve Proving System

VDK 200A S02, Valve Proving System