Low Pressure, Full Port, Control Valve

The CV40 is a low pressure, full port, dump valve featuring balanced plug control trim with a quick opening characteristic and adjustable topworks. The full port and soft seat design allow for high flow rates and consistent leak free shut off. The CV40 can be used for discharging liquid or gas from separators, treaters, knockouts or other vessels. It can also be used for back pressure regulation when paired with a PC48 pressure controller making it 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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Whether you’re an operator, OEM, pipeline company, flowback company, supply store or a service company, we have a variety of quality solutions to fit your specific needs. Contact us today to improve your operations through quality engineering and performance, field-proven durability, quick turnarounds and delivery – at prices that won’t eat into your bottom line.