DUNGS FRS 520 Gas Pressure Regulator DN50 50mm 2" with Spring 25-55 mbar | eBay
Dungs or Frng 5040 159350 DN40 LPG Low Gas Pressure Regulator Reducing Valve Compressed Air-Controlled Pressure Regulator - China Pressure Regulator, Proportional Control Valve | Made-in-China.com
Silvery White Alloy Dungs Gas Regulator FRS Series, For Industrial
Dungs MBC 300-SE,MBC 700-SE,MBC 1200-SE, MBC 300-N, MBC 700-N Combined Servo Pressure Regulator and Safety Shut Off Valves // Techrite Controls New Zealand