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3-PORT THREADED SEAT VALVES PN 16 (1...120 °C)

VRG 3.. - VRB 3..

 clicca sull'immagine per ingrandire

 Path - First page - Products - Seat - VRG 3 / VRB 3

APPLIVATION

Control valves for hot water max 120 °C or chilled min. –10°C (glycol content 30% max.).

FEATURES

  • Body in cast iron GG25 (VRG 3...) or bronze Rg5 (VRB 3..).

  • Spindle in stainless steel.

  • Plug in brass.

  • Connections with female threaded unions ISO 228/1.

  • Control: 

    • throughport = equal percentage.

    • by pass = linear.

    • Control ratio 30:1.

  • Let by: 

    • throughport ≤ 0.05% Kvs

    • by pass ≤ 1% Kvs.

      DN connection     Suitable actuators  
Code   DN body mm valve pipes 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
      male female     bar(2) s(3) bar(2) s(3) bar(2) s(3) bar(2) s(3) bar(2) s(3)  
 Cast iron  
VRG 311   15 1" 1/2" 0.63 10 16 110 9 70 16 110 16 30 16 110 M 943
VRG 312   15 1" 1/2" 1.0 10 16 110 9 70 16 110 16 30 16 110
VRG 313   15 1" 1/2" 1.6 10 16 110 9 70 16 110 16 30 16 110
VRG 314   15 1" 1/2" 2.5 10 16 110 9 70 16 110 16 30 16 110
VRG 315   15 1" 1/2" 4.0 10 16 110 9 70 16 110 16 30 16 110
VRG 320   20 1"1/4 3/4" 6.3 15 11 165 4 105 16 165 13 45 10 165
VRG 325   25 1"1/2 1" 10 15 6 165 2 105 16 165 8 45 5 165
VRG 332   32 2" 1"1/4 16 15 3 165 1 105 9 165 5 45 2.5 165
VRG 340   40 2"1/4 1"1/2 25 15 2 165 - - 6 165 3 45 2 165
VRG 350   50 2"3/4 2" 40 15 1 165 - - 3 165 2 45 0.5 165
Bronze  
VRB 311   15 1" 1/2" 0,63 10 16 110 9 70 16 110 16 30 16 110 M 943
VRB 312   15 1" 1/2" 1,0 10 16 110 9 70 16 110 16 30 16 110
VRB 313   15 1" 1/2" 1,6 10 16 110 9 70 16 110 16 30 16 110
VRB 314   15 1" 1/2" 2,5 10 16 110 9 70 16 110 16 30 16 110
VRB 315   15 1" 1/2" 4,0 10 16 110 9 70 16 110 16 30 16 110
VRB 320   20 1"1/4 3/4" 6,3 15 11 165 4 105 16 165 13 45 10 165
VRB 325   25 1"1/2 1" 10 15 6 165 2 105 16 165 8 45 5 165
VRB 332   32 2" 1"1/4 16 15 3 165 1 105 9 165 5 45 2.5 165
VRB 340   40 2"1/4 1"1/2 25 15 2 165 - - 6 165 3 45 2 165
VRB 350   50 2"3/4 2" 40 15 1 165 - - 3 165 2 45 0.5 165

  • (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 
ARS 104   Spindle heater for fluid temperature from ­10 a 0 °C. 24 V~ (20W) DN 15..50

FEMALE PLUGS FOR CONVERTING VRG ... AND VRB ... VALVES FROM 3-TO 2-PORT

  • GG25. cast iron. Comprises female plug and seal.

  • Supplied in packs of 3.

Code   Descrizione Valves VRG/VRB
TVG G15   1" female plug with seal. 311...315
TVG G20   1"1/4 female plug with seal. 320
TVG G25   1"1/2 female plug with seal. 325
TVG G32   2" female plug with seal. 332
TVG G40   2"1/4 female plug with seal. 340
TVG G50   2"3/4 female plug with seal. 350

PRESSURE DROP IN VRG 3.. - VRB 3.. SEAT VALVES