Danfoss VFY-WG, VFY-LG Data sheet
Data sheet
Butterfly valves with gear box
VFY-WG, VFY-LG
Description |
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Features: |
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• Spline driven one piece shaft connected to |
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spherically machined disc allows high torque |
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transmission i.e. quick response and minimum |
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back-lash |
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• Long term reliability due to upper and lower |
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anti-friction bearings |
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• Safe maintenance: shaft blow out protection |
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with circlip |
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• Position indicator |
Main Data:
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DN 50-350 |
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kVS 79-8520 m3/h |
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PN 16 |
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EPDM Liner |
• Stainless steel or Ductile iron Epoxy |
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Coated disc |
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Medium: |
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- Circulation water, drinking water or chilled |
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glycolic water up to 50 % |
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Medium Temperature: |
−10 … 120 °C (EP disc) −10 … 130 °C (SS disc)
• Wafer or Lug connection
• Approvals:
Ordering |
Wafer type VFY-WG |
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DN |
(m3/h) |
PN |
(°C) |
Disc |
Code No. |
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kVS |
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Tmax |
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50 |
79 |
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065B7440 |
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65 |
174 |
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065B7441 |
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80 |
275 |
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065B7442 |
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100 |
496 |
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065B7443 |
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125 |
883 |
16 |
130 |
Stainless Steel |
065B7444 |
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150 |
1212 |
065B7445 |
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200 |
2500 |
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065B7446 |
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250 |
3948 |
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065B7457 |
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300 |
5635 |
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065B7458 |
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350 |
8520 |
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065B7449 |
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XX |
50 |
79 |
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065B8420 |
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65 |
174 |
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065B8421 |
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X |
80 |
275 |
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065B8422 |
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100 |
496 |
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065B8423 |
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125 |
883 |
16 |
120 |
Ductile iron Epoxy |
065B8424 |
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150 |
1212 |
Coated |
065B8425 |
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200 |
2500 |
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065B8426 |
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250 |
3948 |
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065B8427 |
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300 |
5635 |
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065B8428 |
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350 |
8520 |
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065B8429 |
© Danfoss | 2020.11 |
AI176286477249en-010903 | 1 |
Data sheet |
VFY-WG, VFY-LG |
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Ordering |
Lug type VFY-LG |
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DN |
(m3/h) |
PN |
(°C) |
Disc |
Code No. |
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kVS |
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Tmax |
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50 |
79 |
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065B7460 |
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65 |
174 |
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065B7461 |
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80 |
275 |
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065B7462 |
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100 |
496 |
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065B7463 |
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125 |
883 |
16 |
130 |
Stainless Steel |
065B7464 |
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150 |
1212 |
065B7465 |
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200 |
2500 |
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065B7406 |
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250 |
3948 |
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065B7407 |
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300 |
5635 |
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065B7408 |
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DN XX |
350 |
8520 |
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065B7469 |
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XX XX |
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XX |
50 |
79 |
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065B8430 |
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65 |
174 |
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065B8431 |
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XX |
80 |
275 |
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065B8432 |
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100 |
496 |
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065B8433 |
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125 |
883 |
16 |
120 |
Ductile iron Epoxy |
065B8434 |
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150 |
1212 |
Coated |
065B8435 |
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200 |
2500 |
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065B8436 |
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250 |
3948 |
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065B8437 |
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300 |
5635 |
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065B8438 |
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350 |
8520 |
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065B8439 |
Spare parts |
Replacement Liner VFY-W Liner |
Replacement gearbox VFY-Gearbox |
DN |
PN |
Liner |
Code No. |
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50 |
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065B7582 |
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65 |
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065B7583 |
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80 |
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065B7584 |
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100 |
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065B7585 |
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125 |
16 |
EPDM |
065B7578 |
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150 |
065B7579 |
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200 |
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065B7592 |
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250 |
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065B7593 |
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300 |
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065B7594 |
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350 |
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065B7591 |
for DN |
Code No. |
50/65/80/100 |
065B7595 |
125/150/200 |
065B7596 |
250 |
065B7598 |
300 |
065B7599 |
350 |
065B7600 |
2 | AI176286477249en-010903 |
© Danfoss | 2020.11 |
Data sheet |
VFY-WG, VFY-LG |
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Technical data
Type |
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VFY-WG |
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VFY-LG |
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Nominal diameter |
DN |
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50-350 |
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kVS value |
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m3/h |
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79-8520 |
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Rotation angle |
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90 ° |
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Leakage rate |
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Acc. to PED 2014/68/EU, EN 12266-1, Rate A 1) |
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Nominal pressure |
PN |
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16 |
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Medium |
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Circulation water, Glycolyc water up to 50 % or drinking water |
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Medium |
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EP disc |
°C |
−10 ... 120 (see p-T diagram) |
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temperature |
SS disc |
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−10 ... 130 (see p-T diagram) |
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Connection |
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Wafer (centering lugs) |
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Lug (Tapped lugs) |
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Mounting |
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mounting between flanges |
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mounting deadline |
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Material |
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Body |
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Cast iron EN GJL 250 (DIN GG25) DN 50-300 |
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Cast iron EN GJL 250 (DIN GG25) DN 50-150 |
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Ductile iron (DIN GGG40) DN 350 |
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Ductile iron (DIN GGG40) DN 200-350 |
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Disc |
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Ductile iron EN GJS 400-15 (DIN GGG 40) with Epoxy coating or Stainless Steel |
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Shaft |
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Stainless steel AISI 420 |
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Liner |
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EPDM |
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Circlip |
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Steel XC 75 / Stainless steel |
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O-ring |
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Nitrile/Viton |
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Upper guide bush |
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Zinc coated S. + PTFE |
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Lower guide bush |
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Zinc coated S. + PTFE |
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Gear box |
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Aluminium |
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1) No visible detectable leakage during the testing procedure
Installation positions
Recommended |
Possible |
Possible |
Not recommended |
© Danfoss | 2020.11 |
AI176286477249en-010903 | 3 |
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