C&K South - Cornerstone Severe Service Ball Valve Products

Cornerstone Rotary Control Valve

  • High capacity for given nominal valve size.
  • Rangeability (ratio of maximum to minimum controllable flow). Easily 80:1, up to 300:1 in large sizes.
  • Space - typically smaller space than globe.
  • Simple packing arrangements.
  • Durability - with the right design features:
  • One piece ball/stem - no joint no hysteresis
  • Ease of automation
  • Tight shutoff (typically ANSI/FCI Class V or VI
  • Bi-directional shutoff (if so specified)
  • In-line serviceable
  • Clean or loaded fluids.
Cornerstone Rotary Control Valve

Features and Benefits


  • Trunnion mounted

  • Soft or Metal seated

  • Sizes 1/2" to 36"

  • Full or Reduced Port

  • ANSI 150 - 4500

  • API 2k - 15k

  • -320° F to 1,875° F, [ -251°C - 1023°C]

  • Any Metallurgy

  • Choice of End Connections

  • Leakage Class to customer specification

  • Actuation to customer specification




Common Applications