VFGS 2 2-Way Valve
Brand: DanfossThe controller is a self-acting pressure reduction controller primarily for use in district heating systems. The controller is normally open and closes on rising differential pressure.
The controller has a control valve, an actuator with one control diaphragm and a spring for pressure setting.
Further on valve versions are available:
- VFGS 2 for steam, with metallic sealing cone
Specifications
Brand
Applications
- Used in District Heating Systems
Approvals & Certifications
- EN 1092-1 - for PN 40 Flange
- EN 1092-2 - for PN 16 & 25 Flanges
Cone Material
- 420 Stainless Steel (1.4021)
- CA 6-NM Stainless Steel (1.4313)
Connection Style
- Flange
Diaphragm Material
- EPDM
Differential Pressure
- psi: 145 to 290.1 (kPa: 1,000 to 2,000, bar: 10 to 20)
Enclosure, Body Material
- Cast Steel GP240 GH (GS-C 25) - Valve PN 40
- Ductile Iron EN-GJS-400 (GGG-40.3) - Valve PN 25
- Grey Cast Iron EN-GJL-250 (GG-25) - Valve PN 16
Flange Size - 1-1/2” (DN 40)
- 1-1/2" (DN 40) - PN 16
- 1-1/2" (DN 40) - PN 25
- 1-1/2" (DN 40) - PN 40
Flange Size - 1-1/4” (DN 32)
- 1-1/4" (DN 32) - PN 16
- 1-1/4" (DN 32) - PN 25
- 1-1/4" (DN 32) - PN 40
Flange Size - 1” (DN 25)
- 1" (DN 25) - PN 16
- 1" (DN 25) - PN 25
- 1" (DN 25) - PN 40
Flange Size - 1/2” (DN 15)
- 1/2" (DN 15) - PN 16
- 1/2" (DN 15) - PN 25
- 1/2" (DN 15) - PN 40
Flange Size - 10” (DN 250)
- 10" (DN 250) - PN 16
- 10" (DN 250) - PN 40
Flange Size - 2-1/2” (DN 65)
- 2-1/2" (DN 65) - PN 16
- 2-1/2" (DN 65) - PN 25
- 2-1/2" (DN 65) - PN 40
Flange Size - 2” (DN 50)
- 2" (DN 50) - PN 16
- 2" (DN 50) - PN 25
- 2" (DN 50) - PN 40
Flange Size - 3” (DN 80)
- 3" (DN 80) - PN 16
- 3" (DN 80) - PN 25
- 3" (DN 80) - PN 40
Flange Size - 3/4” (DN 20)
- 3/4" (DN 20) - PN 16
- 3/4" (DN 20) - PN 25
- 3/4" (DN 20) - PN 40
Flange Size - 4” (DN 100)
- 4" (DN 100) - PN 16
- 4" (DN 100) - PN 25
- 4" (DN 100) - PN 40
Flange Size - 5” (DN 125)
- 5" (DN 125) - PN 16
- 5" (DN 125) - PN 40
Flange Size - 6” (DN 150)
- 6" (DN 150) - PN 16
- 6" (DN 150) - PN 40
Flange Size - 8” (DN 200)
- 8" (DN 200) - PN 16
- 8" (DN 200) - PN 40
Flow Rate
- 4 to 630 m³/hour (Kvs)
Materials of Construction
- 316Ti Stainless Steel, 1.4542 - Bellows
Media
- Steam
Mounting Position
- Any Position for DN 15 to 80 Tmax ≤ 120° C (248° F)
- Horizontal for DN 15 to 80 Tmax > 120° C (248° F), DN 100 to 250
Nominal Pressure
- psi: 232.1 to 580.2 (kPa: 1,600 to 4,000, bar: 16 to 40)
Process Temperature
- 2° to 350° C (35.6° to 662° F)
Seat / Seal Material
- Sealing: Metal
- Valve Seat: 420 Stainless Steel (1.4021)
- District Heating Systems