Low Pressure, Full Port, Control Valve

BMD’s CV40 is a low pressure, full port, dump valve with power features that include full port, soft seat design, and balanced plug control trim. With its ability for discharging liquid or gas, this dynamic low pressure control valve is a game-changer for the industry.

Power Features

  • CV40 is a low pressure, full port, dump valve
  • Balanced plug control trim with a quick opening characteristic and adjustable topworks
  • Full port
  • Soft Seat design
  • Allows for high flow rates and consistent leak-free shut off
  • CV40 can be used for discharging liquid or gas from separators, treaters, knockouts, and other vessels
  • Can also be used for back pressure regulation when paired with a PC48 pressure controller—a great economical choice for a variety of low-pressure applications.


  • Sizes: 2”, 3” and 4”
  • Connections: FNPT (2” and 3” only), Flanged (3” and 4” only)
  • Body Type: Globe, Angle (2” and 3” only)
  • Trim Characteristic: Quick Open
  • Pressure Rating:
    • 500 psi – 2” size
    • 250 psi – 3” and 4” sizes
  • Temperature Range:  -20° F to 400° F (-29° C to 204° C)
  • Actuator Sizes:  #35
  • Input Signal Range: 10-45 psi
  • Materials:
    • Body: Ductile Iron
    • Bonnet and Plug: Nickel Plated Carbon Steel
    • Bonnet Flange: Carbon Steel
    • Seat: Zinc Plated Carbon Steel
    • Stem: 304 Stainless
    • Actuator Housing: Carbon Steel
    • Bolting: A193 B7
    • Standard Materials are NACE compatible

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