Siral CVS Series

The Siral steam characterized control valve is the intelligent solution for low pressure steam. The CVS's compact design, zero leakage and metal characterizing disc it combines durability, control and efficiency. A better and more efficient alternative to a globe valve for 1/2" to 1" size applications.

Stability and Control

  • The valve’s equal percentage characteristic provides a linear change in thermal output based on the valve’s opening angle that is controlled by the actuator’s input signal.
  • With its built-in stainless-steel ball and brass disc, the CVS is designed to provide durability and flow accuracy that are lacked in other plastic disks lack.
  • The brushless DC motor technology has longer life due to its low friction design
  • The valve is designed with efficiency in mind. It incorporates a leak-free auto-cleaning ball assembly. Its thermal barrier flange reduces heat-transfer to the actuator extending its life.
  • Internal leakage in a valve causes energy waste. Most 3-way valves in the industry usually have some level of internal leakage even when new. With our unique valve design both our 2-way and 3-way valves are bubble tight with zero leakage through all ports.
  • Brushless motor technology improves efficiency due to reduced heat output compared to conventional motors.


  • Stainless steel ball and stem – Maximum corrosion resistance
  • Nickel plated brass body –Reduces stress concentration
  • Engineered thermal barrier
  • Brushless DC Motor technology

Ball Valve Technology

  • Self cleaning ball – Eliminates blockage and leakage caused by damaged surfaces
  • Blowout proof stem – Safety during system pressure spikes
  • Floating seat design – Stable torque through life
  • Zero Internal leakage – Stops energy waste caused by leakage


  • Flow patterns: 2-Way
  • Size range: ½ to 1”
  • Cv range: 0.3 to 30
  • Control: On/Off, Floating Point, Modulating (2-10VDC)

A system where a product is completely controlled internally by Siral from the conception phase, through all stages of development and manufacturing. This system is defined by a synchronized and singular focus on the end user solution throughout all facets of the design, development and all manufacturing processes.

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