Description
A water butterfly valve is a type of valve used to control the flow of water or other fluids through a pipeline. It gets its name from the butterfly-shaped disc inside the valve that rotates to open or close the flow. When the valve is fully open, the disc is positioned parallel to the flow direction, allowing unobstructed passage of water. When the valve is closed, the disc is turned perpendicular to the flow, effectively blocking the flow of water. Water butterfly valves are commonly used in various industries and applications, including water treatment plants, sewage systems, irrigation systems, and industrial processes. They are known for their compact design, lightweight construction, and ease of installation. These valves are often preferred for their quick operation, as the disc can be opened or closed with a simple quarter-turn motion. Butterfly valves can be operated manually with a handle or lever, or they can be automated using electric, pneumatic, or hydraulic actuators to control the valve remotely. They are known for their low-pressure drop and relatively low cost compared to other types of valves. It's worth noting that water butterfly valves are specifically designed for use with water and compatible fluids. Different materials and designs may be required for valves intended for use with corrosive or high-pressure fluids. It's important to select the appropriate type of butterfly valve based on the specific application and fluid requirements.
Technical parameters of water butterfly valve DNOVA WBV1332N-2W-Fb-H body material - Cast iron GGG50, disk material - Stainless steel 316L, seal - NBR with pneumatic actuator DA and limit switch block APL-410N EX:
| Nominal diameter DN, mm | 40 - 300 |
| Working pressure PN, bar | 16 |
| Working medium temperature t, ⁰C | from -20 to +120 |
| Operating medium | water, mineral oils, hydrocarbons, oils, fats |
| Flow direction | two-way |
| Control type | handle |
| Pipeline connection | interflanged |
| Body material | cast iron GGG50 |
| Service life, years | 10 |
Dimensional parameters of water butterfly valve DNOVA WBV1332N-2W-Fb-H body material - Cast iron GGG50, disk material - Stainless steel 316L, seal - NBR with pneumatic actuator DA and limit switch block APL-410N EX:
| DN |
Model electric actuator |
Dimensions | ||||
| E, mm | L1, mm | A, mm | C, mm | K, mm | ||
| 40 | DNOVA DA-052 | 34 | 153 | 114 | 98 | 147 |
| 50 | DNOVA DA-065 | 43 | 174 | 131 | 115 | 147 |
| 65 | DNOVA DA-065 | 46 | 174 | 140 | 115 | 147 |
| 80 | DNOVA DA-083 | 46 | 216 | 150 | 135 | 147 |
| 100 | DNOVA DA-083 | 52 | 216 | 163 | 135 | 147 |
| 125 | DNOVA DA-105 | 56 | 279 | 178 | 160 | 147 |
| 150 | DNOVA DA-105 | 56 | 279 | 191 | 160 | 147 |
| 200 | DNOVA DA-130 | 60 | 308 | 238 | 193 | 147 |
| 250 | DNOVA DA-140 | 68 | 405 | 285 | 210 | 147 |
| 300 | DNOVA DA-160 | 78 | 465 | 315 | 237 | 147 |
Materials of water butterfly valve DNOVA WBV1332N-2W-Fb-H body material - Cast iron GGG50, disk material - Stainless steel 316L, seal - NBR with pneumatic actuator DA and limit switch block APL-410N EX:
| № | Name | Material |
| 1 | Body | cast iron GGG50 |
| 2 | Seat seal | NBR |
| 3 | Disk | stainless steel 316L |
| 4 | Stem | stainless steel AISI 416 |
| 5 | Pin | stainless steel AISI 420 |
| 6 | Bushing | PTFE |
| 7 | O-ring | NBR |
| 8 | Plate | carbon steel |
Main technical characteristics of pneumatic actuators:
| Design | Double-acting | |
| Nominal pressure PN, bar | 12 | |
| Operating pressure, bar | 2…8 | |
| Operating medium | Filtered compressed air or non-aggressive gases, oils | |
| Maximum particle diameter | less than 30 µm2 | |
| Operating temperature t, ⁰C | • from -20 to +80 • from -40 to +80 (low-temperature version) • from -20 to +160 (in dry air) |
|
| Adjustment range | ± 5° for rotation at 0° and 90° | |
| Manual duplication | yes | |
| Position indicator | open/closed | |
| Operating environment | indoors and outdoors. (All internal and external parts have an anti-corrosion coating) | |
Pneumatic actuator component materials DNOVA DA:
| № | Name | Quantity | Material | Coating |
| 1 | Body | 1 | extruded aluminum | hard anodized |
| 2 | Side caps | 2 | cast aluminum | |
| 3 | Gear | 1 | stainless steel | nickel plated |
| 4 | Piston | 2 | steel/aluminum | oxidation/ galvanized zinc plating |
| 5 | Plugs | 8 | stainless steel | |
| 6 | Piston ring | 2 | NBR | |
| 7 | Springs | 0-12 | spring steel | epoxy coating |
| 8 | Piston bearing | 2 | engineering plastic | |
| 9 | Piston ring | 2 | NBR | |
| 10 | Plug | 2 | NBR | |
| 11 | Thrust ring | 2 | engineering plastic | |
| 12 | Ring | 1 | engineering plastic | |
| 13 | Washer | 1 | stainless steel | |
| 14 | Spring clip | 2 | stainless steel | |
| 15 | Indicator | 1 | plastic | |
| 16 | Indicator body | 1 | plastic | |
| 17 | Bearing | 1 | engineering plastic | |
| 18 | Cam | 1 | steel | oxidation/ galvanized galvanizing |
| 19 | Bearing | 1 | NBR | |
| 20 | Bearing | 1 | engineering plastic | |
| 21 | Bearing | 1 | engineering plastic | |
| 22 | O-ring | 2 | NBR | |
| 23 | O-ring | 2 | NBR | |
| 24 | Bearing | 2 | stainless steel | |
| 25 | Adjustment nut | 2 | stainless steel | |
| 26 | Adjustment screw | 2 | stainless steel | |
| 27 | Bushing | 2 | aluminum |
Technical characteristics of limit switch unit APL-410N EX:
| Body | all-weather IP65 explosion-proof Exd IIB T6 |
| Cable glands | 2 x NPT1/2” |
| Terminal strips | 8 points (0.05 - 2.5) mm2 |
| Position indicator | 0 - 90° (90° free rotation) CLOSED - red; OPEN - yellow |
| Switches/sensors | two mechanical switches two proximity sensors |
| Nominal voltage, V | 250 |
| Permissible ambient temperature, °C | from -25 to +80 |
| Service life, years | 10 |
Materials of limit switch unit APL-410N EX:
| Name | Materials |
| Enclosure cover and body | aluminum die casting |
| Shaft | stainless steel |
| Indicator cover | polycarbonate |
| Cam | polycarbonate |
| Spring | stainless steel |
| Enclosure cover bolts | stainless steel |
| O-ring | NBR |
| Bushing | bronze |
| Sealing ring (shaft) | stainless steel |
| Ground terminal | stainless steel |
| Indicator | ABS plastic / polycarbonate |
| Bracket | stainless steel |
Passports and certificates
Data sheet for DNOVA DA/SA double-acting pneumatic actuator with return springs
Data sheet for limit switch unit DNOVA APL-410N EX
Specifications
Delivery
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