Dong-A Check Valves are made of high quality forged steel. Check Valves are installed in pipelines prevents unwanted backflow to upstream. Valves are available in 1-1/2 to 4 inch bore sizes for standard and reverse flow. Sour gas models are also available.

• Flapper type Check Valve

  • • 2" & 3" 1502 M x F , Standard & H2S

    • Unrestricted full bore flow

    • Slick water, sand, proppant/gel, and cement services

• Dart type Check Valve

  • • 2" & 3" 1502 M x F , Standard & H2S

    • Spring loaded design

    • Extreme nitrogen and carbon dioxide service; wet or dry non-erosive flow

• Swing type Check Valve

  • • 2” & 3” 1502 M x F , Standard & H2S

    • Fast and easy repair

    • High-pressure well-services, fracturing, testing, acidizing, cementing, circulating and other well services and stimulation applications