+48 32 781 85 17 polna@polna-slask.pl

ROTARY PLUG CONTROL VALVES (TYPE Z33)

APPLICATION AREA:
Rotary plug control valves Z33 represent the design of valves, where change in flow ratio is achieved through eccentrically set rotary plug. Such structures are particularly useful for control of flow under heavy-duty conditions, with high probability of cavitation and erosion. Possibility of obtaining high flows and wide range of material and design variants make them ideal for application in many branches of industry, such as power generation, metallurgy, chemical and petroleum industry, food industry, paper industry, etc.

FEATURES:

  • one-piece valve body (cast with bonnet), no static or dynamic sealing except shaft sealing chamber,
  • no “detachment effect” between plug and seat,
  • ability to change Kvs without changing plug or seat,
  • easy replacement of rotary, symmetrical plug,
  • elongated bonnet allows application of double sealing for shaft, meeting “low emission” standards equal to TALUFT conditions,
  • the same Kvs coefficients for “hard” and “soft” seats,
  • leakage class less than 0.01%Kvs for “hard” seats (metal-metal),
  • same flow direction for “hard” and “soft” seats,
  • valve-actuator connection accessible from outside, which allows pivoting actuator to valve axis by 90° increments,
  • special executions: with heat jacket, erosion-proof, for crystallizable media.

DATASHEET


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