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KMC VCB-41/42 Series 2-Way, NPT, Pneumatic, Control Ball Valves

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The VCB-41/42 series, two-way, NPT, ball valves are designed for the precise control of hot or chilled water in pneumatic HVAC applications. Valves range in size from 1/2 to 3 inches and feature an optimizing insert (except for indicated models), which reduces and characterizes the ball opening for equal percentage flow. This design allows the output at the coil to be linear when compared to the open area of the ball.

The valve's dual Teflon ball and stem seals and EPDM O-ringsThe valve's dual Teflon ball and stem seals and EPDM O-rings provide leak-proof shut off and meet both 'packed' and 'packless' construction specifications. The reduced torque seals and O-rings eliminate the need for high torque actuators. KMC's MCP-3631 series actuators work on all valve sizes.


  • Equal percentage flow characteristics with optimizer insert (except indicated models)

  • Cv ratings similar to globe valves

  • Field repairable valve stem design

  • Leak-proof shut off



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