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.
Basic technical data and characteristics of butterfly valves
| Parameter | Value |
| Nominal diameter DN, mm | 40 – 300 |
| Nominal pressure PN, bar | 16 |
| Flow direction | Bidirectional |
| Operating medium temperature, °C | -20 to +120 |
| Ambient temperature, °C | -20 to +100 |
| Shut-off tightness | Class A |
| Working medium | Cold and hot water, oil-free and grease-free air, stationary air conditioning, mildly aggressive media, other media neutral to material |
| Body material | Cast iron GGG50 |
| Disc material | Cast iron GGG40 |
| Pipeline connection | interflange |
| Control type | Handle |
| Average service life, years | 5 |
| Average cycle life (open/close cycles) | 20,000 (under non-aggressive media and average pressure and temperature conditions) |
Gate dimensions DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
| DN | H | H1 | H2 | L | L1 | ØDм | ØDк | D2 (flow section) |
| mm | ||||||||
| 40 | 146 | 74 | 25 | 43 | 216 | 73 | 75 | 50 |
| DN | H | H1 | H2 | L | L1 | ØDm | ØDk |
| mm | |||||||
| 50 | 146 | 74 | 25 | 43 | 216 | 73 | 84.5 |
| 65 | 156 | 80 | 25 | 46 | 216 | 86 | 104.5 |
| 80 | 163 | 100 | 25 | 46 | 216 | 103 | 123.5 |
| 100 | 180 | 116 | 25 | 52 | 255 | 131 | 139.5 |
| 125 | 189 | 123 | 25 | 56 | 255 | 155 | 169.5 |
| 150 | 206 | 137 | 25 | 56 | 255 | 183 | 196 |
| 200 | 232 | 165 | 35 | 60 | 370 | 235 | 247 |
| 250 | 275 | 203 | 35 | 68 | 370 | 286 | 304 |
| 300 | 314 | 235 | 35 | 78 | 370 | 338 | 358 |
Sketch of gates DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
Materials of parts of rotary disc valves DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
| № | Name | Material |
| 1 | Body | cast iron GGG50 |
| 2 | Cuff | EPDM |
| 3 | Disk | cast iron GGG40 |
| 4 | Stock | stainless steel SS 416/2Cr13 |
| 5 | Hairpin | stainless steel AISI 316L |
| 6 | Sleeve | NBR |
| 7 | Sealing ring | NBR |
| 8 | Fixing plate | carbon steel |
| 9 | Handle with lock | carbon steel |
Sketch of materials for rotary disc valves DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
Technical characteristics of DA 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 | Material |
| 1 | Body | extruded aluminum |
| 2 | Side caps | cast aluminum |
| 3 | Gear | stainless steel |
| 4 | Piston | steel/aluminum |
| 5 | Plugs | stainless steel |
| 6 | Piston ring | NBR |
| 7 | Springs | spring steel |
| 8 | Piston bearing | engineering plastic |
| 9 | Piston ring | NBR |
| 10 | Plug | NBR |
| 11 | Thrust ring | engineering plastic |
| 12 | Ring | engineering plastic |
| 13 | Washer | stainless steel |
| 14 | Spring clip | stainless steel |
| 15 | Indicator | plastic |
| 16 | Indicator body | plastic |
| 17 | Bearing | engineering plastic |
| 18 | Cam | steel |
| 19 | Bearing | NBR |
| 20 | Bearing | engineering plastic |
| 21 | Bearing | engineering plastic |
| 22 | O-ring | NBR |
| 23 | O-ring | NBR |
| 24 | Bearing | stainless steel |
| 25 | Adjustment nut | stainless steel |
| 26 | Adjustment screw | stainless steel |
| 27 | Bushing | aluminum |
Characteristics of limit switch unit APL-510N-EX:
| Parameter | Value |
| Body | weatherproof IP67/ NEMA4 4X,7,9 explosion-proof E EX d IIC T6 |
| Compatible devices | - quarter-turn pneumatic actuators; - any actuators with a 90° shaft rotation |
| Full swivel angle | 90° |
| Cable glands | 2 x NPT 3/4” |
| Electrical connection | Screw terminal clamps, 8 points (0.08 – 2.5 mm²) |
| Cable entry thread | 2 x NPT 3/4” |
| Type of visual indicator | two-color hemisphere: OPEN (Open) - yellow CLOSED (Closed) - red |
| Switches/sensors | two mechanical switches two proximity sensors |
| Nominal voltage, V | 250 |
| Nominal current, A | 16 |
| Permissible ambient temperature, °C | from -20 to +66 |
| Average life, cycles | 10 000 000 |
| Weight, kg | 1.8 |
Passports and certificates
Data sheet for DNOVA DA/SA double-acting pneumatic actuator with return springs
Specifications
Delivery
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