In the dynamic realm of industrial flow control, TWT Valve, a venerable enterprise boasting a 65 – year – long factory legacy, has consistently been at the vanguard of delivering top – tier valve solutions. Among its product portfolio, the DN 2000 butterfly valve and the big size gate valve often become the focal points of comparison when it comes to achieving efficient flow control.
Comparison Between DN 2000 Butterfly Valve and Big Size Gate Valve for Flow Control
Structural Differences
- DN 2000 Butterfly Valve: Features a double-eccentric, auto-sealed design.
- Big Size Gate Valve: Utilizes a gate-plate structure, providing a straight-through flow path when fully open.
Driving Modes
- DN 2000 Butterfly Valve: Offers flexible actuation options, including manual (worm gear), hydraulic, pneumatic, or electric.
- Big Size Gate Valve: Primarily manual operation, which is relatively slow.
Working Conditions
- DN 2000 Butterfly Valve:
- Designed for low-pressure applications (Pn < 1.6 MPa).
- Operates in normal temperature ranges (-40°C < T < 120°C).
- Features a soft-sealed surface.
- Big Size Gate Valve:
- Suitable for a wide range of pressure levels.
- Offers both metal- and soft-sealed surfaces.
Valve Body Materials
- DN 2000 Butterfly Valve: Made from materials like cast steel and stainless steel.
- Big Size Gate Valve: Constructed from materials such as cast steel, cast iron, etc.
Flow Control Characteristics
- DN 2000 Butterfly Valve:
- Small pressure drop during large-scale fluid flow.
- Quick opening and closing capabilities.
- Big Size Gate Valve:
- Low flow resistance when fully open.
- Slower opening and closing speeds.
Below is a more detailed comparison table
| Comparison Items | DN 2000 Butterfly Valve | Big Size Gate Valve |
| Structure | Double-eccentric sealing, auto-sealed form | Usually a gate – plate structure, providing a straight – through flow path when fully open |
| Driving Mode | Manual (worm gear), hydraulic, pneumatic, electric | Manual, electric, etc. Manual operation is relatively slow |
| Working Pressure | Low pressure (Pn<1.6mpa) | Applicable to a variety of pressure ranges, depending on the specific model |
| Working Temperature | Normal temperature (-40°C<T<120°C) | Different materials are applicable to different temperature ranges |
| Seal Surface | Soft – sealed | Metal – sealed or soft – sealed, selected according to application scenarios |
| Valve Body Material | Casting (such as cast steel, stainless steel, etc.) | Cast steel, cast iron and other materials |
| Flow Control Characteristics | Small pressure drop during large – scale fluid flow, can be opened and closed quickly | Small flow resistance when fully open, but the opening and closing speed is relatively slow |
| Application Scenarios | Water flow control in hydropower plant turbines, air and water flow management in large – scale HVAC systems, urban water supply systems | Scenarios with high requirements for fluid stability in chemical processing plants, and some occasions that require tight shut – off |
| Operational Flexibility | Can be flexibly adapted to different driving modes | Relatively weak operational flexibility, especially during manual operation |
| Anti – corrosion Measures | Epoxy coating, applying anti – corrosion coating during maintenance, cathodic protection | Similar anti – corrosion measures, determined according to specific working conditions and materials |
| Installation Connection Form | Flange connection | A variety of connection forms, such as flange, welding, etc. |
| Product Standards | API609/DIN3354/BS5155/En593, etc. | Corresponding industry standards, such as ASME, GB, etc. |
Exceptional Attributes of the DN 2000 Butterfly Valve
The GGG50 – type DN 2000 butterfly valve showcases a plethora of outstanding features. Structurally, it incorporates a double – eccentric sealing mechanism with an auto – sealed configuration. Equipped with a standard valve stem, it is engineered to function optimally under low – pressure conditions (Pn<1.6mpa) and within a normal – temperature range (-40°C<T<120°C). The soft – sealed surface not only guarantees a leak – tight seal but also enables smooth operation. Constructed with a cast – body, it adheres to international benchmarks such as API609, DIN3354, BS5155, and En593.
This butterfly valve stands out for its high – capacity performance, facilitating large – scale fluid flow with minimal pressure drop. Crafted from heavy – duty materials like cast steel or stainless steel, it offers high – performance sealing alternatives. Operationally, it exhibits remarkable flexibility, being adaptable to hydraulic, pneumatic, or electric actuation systems. Its applications span across various sectors, including hydropower plants for regulating water flow in turbines, large – scale HVAC systems for managing air and water circulation, and municipal water systems for overseeing water distribution in urban areas.
Characteristics of the China Big Size Gate Valve
Conversely, the big size gate valve has its own set of characteristics. Gate valves are renowned for providing a straight – through flow path when fully opened, which can be advantageous in certain applications where minimal disruption to the flow is crucial. However, in contrast to the DN 2000 butterfly valve, gate valves typically have a slower operation speed, particularly when manual operation is involved.
Operational and Maintenance
The DN 2000 butterfly valve from TWT Valve features a manual driving mode with worm – gear operation, as exemplified by the DN900 size, demonstrating its operational versatility. It has a flange – connection design in line with En593. The flange drilling complies with En1092 Pn16, and the face – to – face dimension adheres to En558 13 Series. To safeguard against rust, the valve is coated with epoxy, and additional anti – rust measures include applying anti – corrosion coatings during maintenance and implementing cathodic protection. When not in use, it is advisable to store the valve in a dry environment.
TWT Valve’s Comprehensive Services and Product Guarantees
TWT Valve extends OEM&ODM services tailored to customer requirements. All products are accompanied by ISO/CE/BV certifications and come with an 18 – month warranty. They are transported in export – grade plywood boxes to ensure secure delivery.
In summary, while both the DN 2000 butterfly valve and the big size gate valve play significant roles in flow control, the DN 2000 butterfly valve from TWT Valve emerges as a more superior option, thanks to its high – capacity performance, flexible operation, and extensive application scope. It is indeed an ideal choice for a wide array of industrial, water – related, and household usage scenarios.
About us
With over six decades of expertise, TWT Valve combines modern design standards, advanced intelligent manufacturing equipment, and a state-of-the-art testing center to ensure high-quality and innovative valve solutions. The company specializes in producing a wide range of valves, including butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves, and hydraulic control valves, offering over 1000 valve categories to meet diverse industrial needs.