Parts
How it works
Electric 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
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.
General characteristics of gate valves DNOVA-316L-316L-EPDM:
Specification Water Butterfly Valve DNOVA
| № | Name | Material |
| 1 | Housing | WCB steel or AISI 316L stainless steel |
| 2 | Cuff | EPDM, PTFE, NBR |
| 3 | Disc | AISI 316L stainless steel |
| 4 | Rod | SS 416/2Cr13 stainless steel |
| 5 | Pin | AISI 316L stainless steel |
| 6 | Bushing | EPDM |
| 7 | Sealing ring | EPDM |
| 8 | Fixing plate | carbon steel |
Sketch of specification water Butterfly Valve DNOVA
Hydraulic tests of the housing are carried out with a pressure 1.5 times the working pressure.
Hydraulic tests of the packing gland and seat seal are carried out with 1.1 times the working pressure.
Description of actuator DNOVA-EX 220V:
Explosion-proof actuators are used in industrial explosion hazardous areas to control butterfly valves, ball valves and other quarter-turn valves with ambient temperature from -20°...+60°C.
The enclosure is equipped with a heater (7-10W 220V) and has the following degrees of protection: IP67, NEME 4 and 6, Anticorrosive coating. ExdIICT4 explosion protection standard. The actuator is equipped with an asynchronous motor with squirrel cage rotor, auto-locking of the actuator position and manual double-actuator. The actuator control type is ON / OFF. Actuator stroke 90° with adjustment range ±10°. Cable connection 2 x M18. Power supply is AC voltage 220 V, frequency 50 Hz.
Main technical specifications:
| Electric drive model |
Torque , Nm |
Working time , sec |
Power, W |
Current, A | Weight, kg |
Manual override turns |
| DNOVA(EX)-010 | 100 | 16 | 25 | 0.41 | 11.0 | 10 |
| DNOVA(EX)-015 | 150 | 16 | 40 | 0.83 | 11.5 | 11 |
| DNOVA(EX)-020 | 200 | 20 | 40 | 0.83 | 14.0 | 11 |
| DNOVA(EX)-030 | 300 | 26 | 60 | 0.98 | 19.5 | 13.5 |
| DNOVA(EX)-040 | 400 | 26 | 90 | 1.20 | 20.0 | 13.5 |
| DNOVA(EX)-050 | 500 | 26 | 120 | 1.31 | 20.5 | 13.5 |
| DNOVA(EX)-060 | 600 | 43 | 120 | 1.31 | 32.0 | 16.5 |
| DNOVA(EX)-100 | 1000 | 43 | 200 | 1.79 | 32.5 | 16.5 |
| DNOVA(EX)-200 | 2000 | 85 | 200 | 1.79 | 55.0 | 49.5 |
Electrical diagram of actuator DNOVA EX 10-15 220V:
Electrical diagram of actuator DNOVA EX 20-200 220V:
- Body material
- Stainless steel AISI 316
- Maximum allowable temperature
- 120 °C
- Connection type
- Compact flanged
- Control type
- Electric actuator
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 316L/1.4404
- Voltage
- 110/220V
- Actuator cycle time
- 16s
- Valve feedback
- Limit switches
- Explosion-proof
- Yes
- Thermal protection
- Yes
- Torque
- 100 Nm
- Pneumatic actuator
- No
- Manual override
- Yes
- Limit switches
- No
- 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.