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2-PORT BALANCED PRESSURE FLANGED PN 25 (5...150 °C) SEAT VALVES

VB 2..

 clicca sull'immagine per ingrandire

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APPLICATION

Control valves for hot water and superheated water max. 150 °C.

FEATURES

  • Body in cast iron GGG 40.3.

  • Spindle, seat and plug in stainless steel.

  • Flanged ends PN25 (ISO 7005/2)

  • Control: Equipercentage.

  • Control ratio 50 : 1.

  • Let by: 0.05% Kvs.

          Suitable actuators  
Code   DN body mm Kvs (1) m3/h Run  mm. CLQ/CEQ 07. 14 s/mm CLR/CER 15. 15 s/mm CLR/CER 03.   3 s/mm Data sheet
          bar(2) sec(3) bar(2) sec(3) bar(2) sec(3)  
VB 209   15 0.25 5 16 70 16 75 16 15 M 962
VB 210   15 0.4 5 16 70 16 75 16 15
VB 211   15 0.63 5 16 70 16 75 16 15
VB 212   15 1.0 5 16 70 16 75 16 15
VB 213   15 1.6 5 16 70 16 75 16 15
VB 214   15 2.5 5 16 70 16 75 16 15
VB 215   15 4.0 5 16 70 16 75 16 15
VB 220   20 6.3 5 16 70 16 75 16 15
VB 225   25 10.0 7 - - 16 105 16 21
VB 232   32 16.0 10 - - 16 150 16 30
VB 240   40 25.0 10 - - 16 150 16 30
VB 250   50 40.0 10 - - 16 150 16 30

  • (1) : Kvs ­ Flow coefficient: Flow in m3/h with valve open and pressure drop of  100 kPa - 100 kPa = 10 mWG = 1 bar.

  • (2) : bar ­ Maximum pressure differential (∆p max) permitted by actuator.

  • (3) : s ­ Time (seconds) necessary for actuator to make the complete valve run.

PRESSURE DROP IN SEAT VALVES VB 2..