Description
Overview of KNKE Large Diameter Butterfly Valve
KNKE’s Large Diameter Butterfly Valves are designed for pipe diameters of 300mm and above. These valves feature an eccentric design with soft and hard sealing options. You can choose from a variety of materials, including carbon steel and stainless steel, with special materials available upon request. These valves offer flexible operation through manual, worm gear, pneumatic, or electric actuation. As a result, they are highly versatile and widely used in industries such as food, pharmaceuticals, chemicals, petrochemicals, power generation, textiles, and paper manufacturing. Furthermore, these valves are essential for controlling flow and stopping media in pipelines, including water, gas, and other fluids.
Key Features of KNKE Large Diameter Butterfly Valve
- Versatile Actuation Options: Choose between manual, worm gear, pneumatic, or electric actuation to meet your operational needs.
- Durable Sealing Materials: Soft and hard seals ensure reliable performance even under varying pressure and temperature conditions.
- Wide Application Range: Suitable for water, sewage, oil, steam, and gas pipelines.
- Customizable Design: The valve’s design can be customized with different materials and sealing options to cater to specific industry requirements.
Technical Parameters
- Nominal Diameter: DN50 to DN2000
- Nominal Pressure: 0.6 MPa, 1.0 MPa, 1.6 MPa
- Test Pressure:
- Strength Test: 0.9 MPa, 1.5 MPa, 2.4 MPa
- Sealing Test: 0.66 MPa, 1.1 MPa, 1.76 MPa
- Air Seal Test: 0.6 MPa
- Applicable Media: Air, Water, Sewage, Steam, Coal Gas, Oil, etc.
- Driving Mechanism: Manual, Worm Gear, Pneumatic, Electric
Materials of Major Parts
| Part | Material |
| Valve Body | Ductile Iron, Cast Steel, Alloy Steel, Stainless Steel |
| Butterfly Plate | Stainless Steel 2507, 1.4529, Ductile Iron with Rubber Lining, Special Materials |
| Seal Ring | Various Rubber Types, PTFE |
| Valve Stem | 2Cr13, Stainless Steel |
| Packing | O-Rings, Flexible Graphite O-Rings |
Sealing Material Selection and Temperature Resistance
| Material Type | CR | NBR | EPDM | PTFE | SI | VITON | NR |
| Model Code | X or J | XA or JA | XB or JB | F or XC, JC | XD or JD | XE or JE | X1 |
| Max. Temp Resistance | 82°C | 93°C | 150°C | 232°C | 250°C | 204°C | 85°C |
| Min. Temp Resistance | -40°C | -40°C | -40°C | -268°C | -70°C | -23°C | -20°C |
| Working Temp Range | 0~+80°C | -20~+82°C | -40~+125°C | -30~+150°C | -70~+150°C | -23~+150°C | -20~+85°C |
Applications of KNKE Large Diameter Butterfly Valve
KNKE Large Diameter Butterfly Valves are widely used in several industries, including food processing, pharmaceuticals, chemicals, petrochemicals, power generation, textiles, and paper. These valves are designed to efficiently control the flow in water and sewage pipelines, gas pipelines, oil transportation, and steam systems. Moreover, they provide reliable service for various fluid handling systems, offering versatility and durability.
Performance Characteristics
- High-Performance Seals: The valve body and butterfly seal are made from durable materials that maintain integrity under varying temperature and pressure conditions. This ensures a long service life for the valve.
- Leak-Free Design: Advanced sealing technology ensures zero leakage, even at high pressures and extreme temperatures.
- Smooth Operation: Thanks to the eccentric design of the butterfly plate, the valve operates smoothly with minimal friction. This is particularly advantageous for systems requiring frequent operation.
- Customization Options: KNKE valves can be customized with different materials, sealing types, and actuation methods to meet specific operational needs.