Enhanced Corrosion Resistance And Low Torque In Industrial Flow Systems
The nylon coated wafer flange butterfly valve offers superior corrosion resistance and reduced friction for reliable flow control in harsh industrial environments.
Enhanced Corrosion Resistance And Low Torque In Industrial Flow Systems
The nylon coated wafer flange butterfly valve offers superior corrosion resistance and reduced friction for reliable flow control in harsh industrial environments.
The Nylon Coated Wafer Flange Butterfly Valve is a high-performance flow control solution engineered for demanding industrial environments, featuring a durable nylon coating on the disc for exceptional corrosion resistant valve properties and reduced friction. This wafer flange valve design allows for compact installation between pipeline flanges, saving space and simplifying assembly in tight systems. Primarily constructed from ductile iron or carbon steel with a nylon-coated disc, it excels in handling water, oil, gas, and various fluids, providing reliable sealing and longevity in industrial flow control applications such as petrochemical processing, water treatment, and power generation.
Operating via a quarter-turn mechanism, the nylon coated butterfly valve rotates its disc 90 degrees around a robust stem to regulate or isolate flow, ensuring bubble-tight shutoff and bi-directional performance. Available in sizes from 28 inches and above, it supports pressure ratings of PN6 to PN25 (up to ANSI 150) and temperatures from -20°C to 150°C, depending on seat materials like EPDM for water service or Viton for chemical resistance. Compliant with API 609 for design and manufacture, ASME B16.10 for face-to-face dimensions, and EN 558 standards, this API 609 valve undergoes rigorous testing including hydrostatic, pneumatic, and non-destructive examinations to guarantee safety and efficiency. Certifications from ABS, DNV, and Lloyd's Register affirm its suitability for marine and offshore low friction valve uses.
The nylon coating on the ductile iron or carbon steel disc enhances corrosion resistance against chemicals, abrasion, and environmental exposure, while its low-friction surface minimizes torque requirements and extends seat life. Unlike traditional metal discs, the nylon layer provides superior chemical inertness and impact resistance, ideal for slurry or viscous media in mining and sewage systems. The wafer-style body, often in cast iron or ductile iron, features an anti-blowout stem design for added safety, preventing stem ejection under pressure. Optional lug-type configurations allow dead-end service, and surface treatments like epoxy further bolster durability in corrosive atmospheres.
In comparison to uncoated alternatives, the Nylon Coated Wafer Flange Butterfly Valve offers 20-30% longer service life due to its protective coating, reducing maintenance in high-cycle operations. Its high-strength materials resist fatigue and erosion, outperforming gray iron in mechanical shock resistance. Custom options include extended necks for insulation, ISO 5211 mounting for actuators, and various end connections like ASME B16.5 flanges or butt-weld for seamless integration. Testing per API 598 ensures tensile strength exceeding 415 MPa and yield strength of 205 MPa, supporting operations in high-vibration or cryogenic conditions with appropriate seat selections.
Addressing challenges like fluid incompatibility and wear in pipelines, this wafer flange valve incorporates a one-piece stem for integrity and spherical disc edges for smooth operation, achieving zero-leakage even in dead-end scenarios. Whether throttling flow in oil refineries or isolating in gas distribution, it enhances system reliability and safety. For superior protection, the nylon coating—known for its polyamide composition—resists acids, alkalis, and solvents, making it essential for sustainable industrial flow control in global operations.
Engineered to meet diverse industrial needs with robust materials and versatile designs.
| Organization | Standard | Description |
|---|---|---|
| ANSI | American National Standards Institute | General industrial standards |
| API | American Petroleum Institute | Standards for oil and gas industry |
| ASME | American Society of Mechanical Engineers | Boiler and pressure vessel codes |
| BS | British Standards | UK national standards |
| GB, JB, HG | China Valve Standards | Chinese national and industry standards |
Upstream, midstream, and downstream operations, including drilling, refining, and transportation.
Handling corrosive and hazardous chemicals in various chemical plants.
Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.
Municipal water supply, wastewater treatment, and industrial water management.
Heating, ventilation, and air conditioning systems in commercial and industrial buildings.
Sterile and hygienic applications, precise flow control in sensitive industries.
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