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3-PORT FLANGED SEAT VALVES PN 16  (-10 ... 130 °C)

VF 3..

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APPLICATION

Control valves for hot water max 130 °C or chilled water min –10 °C (glycol content max. 30%).

FEATURES

  • DN 15 ... 100:

    • body in cast iron GG 25.

    • spindle in stainless steel.

    • plug in brass.

  • DN 125-150:

    • body in cast iron GGG 40.3.

    • spindle and seat in stainless steel.

    • plug in GGG40.

  • Flanged unions PN 16 (ISO 7005/2)

  • Control:

    • throughport = equal percentage.

    • by pass = linear.

  • Control ratio:

    • DN 15 ... 100 = 50:1

    • DN 125-150 = 30:1.

  • Let by:

  • throughport ≤ 0.05 % Kvs.

  • by pass ≤ 1% Kvs.

          Suitable actuator  
Code   DN mm Kvs (1) m3/h Run  mm. CLE 16. 11s/mm   CLE 10.  7s/mm

CLF 16. 11s/mm

  CLF 04. 3s/mm CEF U16. (4) 11s/mm Data sheet
          bar (2) s (3) bar (2) s (3) bar (2) s (3) bar (2) s (3) bar (2) s (3)  
VF 314   15 2.5 15 16 165 9 105 16 165 16 45 16 165 M 948
VF 315   15 4.0 15 16 165 9 105 16 165 16 45 16 165
VF 320   20 6.3 15 11 165 4 105 16 165 13 45 10 165
VF 325   25 10 15 6 165 2 105 16 165 8 45 5 165
VF 332   32 16 15 3 165 1 105 9 165 5 45 2,5 165
VF 340   40 25 15 2 165 – – 6 165 3 45 2 165
VF 350   50 40 15 1 165 – – 3 165 2 45 0,5 165
          Suitable actuator  
          CLG 32.  8s/mm CLG 16. 4s/mm CLH 32. 8s/mm CLH 16.  3s/mm  
          bar (2) s (3) bar (2) s (3) bar (2) s (3) bar (2) s (3)  
VF 365   65 63 20 4.5 160 3 80 – – – – M 948
VF 380   80 100 30 3 240 2 120 – – – –
VF 3100   100 145 30 1.5 240 1 120 – – – –
VF 3125   125 220 40 1 320 0.5 160 3 320 3 120
VF 3150   150 320 40 0.5 320 0.2 160 1.5 320 1.5 120

  • (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.

  • (4) : actuator with emergency closure.

ACCESSORIES
Code   Description  Power supply Valves VL 3..
ARS 104   Spindle heater for fluid temperature from ­10 to 0 °C. 24 V~ (20W) DN 15 ... 50
ARS 114   Spindle heater for fluid temperature from ­10 to 0 °C. 24 V~ (20W) DN 65 ... 100
ARS 124   Spindle heater for fluid temperature from ­10 to 0 °C. 24 V~ (20W) DN 125 ... 150

 

PRESSURE DROP IN VF 3.. SEAT VALVES