How it works
Modulating quarter-turn actuator
Butterfly disc
The number that matters
Nominal pressure
16bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
Butterfly valve DNOVA GGG50-GGG40 is designed for installation on pipelines in automatic control systems of heat and water supply, in stationary air conditioning and ventilation systems at industrial and civil facilities.
The operating mode of the gate with electric actuator is repeated-short-term S2 with the duration of switching on 15%. The electric actuator is powered by 50 Hz AC mains.
Quarter-turn actuators controlled by DNOVA are designed for remote and local control of 0° ~ 270° rotation of a shut-off valve of such types as ball valve, etc. The actuators are mounted directly on pipeline valves. The mounting dimensions comply with the international standard ISO 05211 / DIN3337. Four microswitches are used to limit the output shaft travel to the end positions of the valve actuator.
Dimensional parameters of water butterfly valve DNOVA GGG50-GGG40 body material - cast iron GGG50, disk material - cast iron GGG40, seal - EPDM with electric actuator DNOVA 220V (4-20mA):
| DN, mm | A, mm | B, mm | L, mm | D1, mm | C, mm | S, mm | F, mm | Weight, kg |
| 40 | 105 | 55 | 33 | 75 | 121 | 146 | 160 | 5.2 |
| 50 | 161 | 80 | 43 | 84.5 | 121 | 146 | 160 | 5.8 |
| 65 | 175 | 89 | 45 | 104.5 | 121 | 146 | 160 | 6.1 |
| 80 | 181 | 95 | 45 | 123.5 | 129 | 163 | 189 | 7.5 |
| 100 (80 Nm) | 200 | 114 | 52 | 139.5 | 121 | 121 | 160 | 7.4 |
| 100 (100 Nm) | 200 | 114 | 52 | 139.5 | 129 | 163 | 189 | 8.4 |
| 125 | 213 | 127 | 55 | 169.5 | 129 | 163 | 189 | 10.4 |
| 150 | 226 | 139 | 55 | 196 | 164 | 212 | 268 | 20.8 |
| 200 | 260 | 175 | 60 | 247 | 164 | 212 | 268 | 25.9 |
| 250 | 292 | 203 | 68 | 304 | 164 | 212 | 268 | 32.7 |
| 300 | 337 | 242 | 78 | 358 | 164 | 255 | 268 | 41.3 |
Materials of water butterfly valve DNOVA GGG50-GGG40 body material - cast iron GGG50, disk material - cast iron GGG40, seal - EPDM with electric actuator DNOVA 220V (4-20mA):
|
№ |
Part name |
Material |
|
1 |
Body |
High-strength cast iron GGG50 |
|
2 |
Disc |
High-strength cast iron GGG40 |
|
3 |
Seat seal |
EPDM |
|
4 |
Upper stem |
Stainless steel AISI 420 |
|
5 |
Lower stem |
Stainless steel AISI 420 |
|
6 |
Retaining ring |
Steel AISI 201 |
|
7 |
Duster |
NBR |
|
8 |
Stem gasket |
NBR |
|
9 |
Bushing |
Steel AISI 201 |
|
10 |
Plug |
Plastic |
|
11 |
Retaining ring |
Steel |
- Body material
- Cast iron GGG50/EN-GJS-500-7
- Maximum allowable temperature
- 110 °C
- Connection type
- Compact flanged
- Control type
- Electric actuator
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Cast iron GGG40/EN-GJS-400-15
- Voltage
- 220V
- Actuator cycle time
- 3s
- Valve feedback
- Limit switches
- Explosion-proof
- No
- Thermal protection
- Yes
- Torque
- 64 Nm
- Pneumatic actuator
- No
- Manual override
- Yes
- Limit switches
- Yes
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.