DN2000 Large Diameter Flange Butterfly Valve Metal Valve Ductile Iron Material
This is a large-caliber flange butterfly valve, which is often used in large-scale fluid transportation pipelines (such as municipal water supply and drainage, water conservancy projects, sewage treatment, etc.) to control the on-off and regulation of large-flow media. Disassembly from structure and function:
Core components & design logic
Valve body (blue body):
Most of the materials are ductile iron, which has been treated with anti-corrosion (such as spraying epoxy resin), with high strength and good corrosion resistance. It is suitable for large diameters ("DN2000", that is, nominal diameter 2 meters), meeting large flow scenarios such as urban water supply and flood discharge.
Flange connection: The valve body has flanges at both ends, which are fastened to the pipe flange by bolts. It is easy to install and has strong sealing performance. It is suitable for long-distance pipeline splicing.
Valve plate (internal disc):
The "switch core" of the large-caliber butterfly valve rotates around the central axis (0°-90°) to control the on-off/flow of water flow. Due to the large diameter, the valve plate needs a high-strength design (such as double-plate type, three-eccentric structure) to ensure tight sealing when closed and small flow resistance when opened, reducing energy consumption.
Actuator (black part):
The electric/pneumatic actuator in the picture provides power for the valve plate to rotate. Large-diameter valves are laborious to operate manually, while electric/pneumatic drives are more efficient and can be remotely controlled and automatically adjusted (for example, in conjunction with the smart water system, they can automatically switch according to the pressure of the pipe network).
Application & Value
Scenario: Municipal water supply trunk pipes, sewage treatment plant effluent discharge, water conservancy hub flood control and drainage, etc. - For example, urban water transmission trunk lines use it to adjust the water pressure of the partition, and sewage treatment plants use it to control the tailwater discharge flow.
Advantages: Large diameter adapts to the needs of the pipe network, and the flange connection is stable and reliable; the actuator has a high degree of automation, saves manpower, responds quickly, and ensures the efficient and safe operation of the urban water system, avoiding risks such as pipe bursts and waterlogging.
In short, this is the "big housekeeper" of the city's "water veins", relying on hard-core structure + automatic control to protect the stable operation of large pipe networks~
Main Performance Specifications
| Nominal size | DN(mm) | 50~2000 | 50~500 |
| Nominal Pressure | PN(Mpa) | 0.6 | 1 | 1.6 | 2.5 | 4 |
| Test Pressure | Strength test | 0.9 | 1.5 | 2.4 | 3.75 | 6 |
| Seal test | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 |
| Gas seal test | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| Leakage | ＜0.1×DNmm3/s(in line with GB/T 13927-92 standard |
| Suitable temperature | -40℃-550℃ |
| Applicable medium | Air,water,steam,gas,oil and acid,alkall,salt with a weal corrosive media,etc. |
| Drive type | Worm worn transmission,electric transmission |
Who we are
SND has been producing and selling metal goods for about 20 years.By using manufacturing techniques including sand casting, lost wax casting, lost foam casting, and precision machining, the company has been supplying goods made of materials like cast iron, steel, stainless steel, aluminum, etc. Additionally offered are surface finishing and assembly services.
Our company has successfully created products in a variety of industries, including automotive, rail transportation, agricultural machinery, chemical, energy, electricity, water, air compressor, and construction, thanks to our consistent efforts over the past few years.
Our factories' ISO9001-accredited quality control systems guarantee a consistent and dependable quality for each and every component.
Spectrometer, ultrasonic, magnetic, permeability, elongation, tensile/yield strength, and other inspections are carried out as part of routine production procedures.
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DN2000 Large Diameter Flange Butterfly Valve - Ductile Iron Material for Industrial Use Images
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