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Help CenterWafer Type Soft Sealed Butterfly Valve for Water Supply and Industrial Pipeline System
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hot selling lug type butterfly valve
Sealing type: Rubber Seated
Size Range: DN50-600
Face to face: ISO5752
Pressure: PN 10/16
Connection: DIN2501
Coating: Epoxy coating
Operation:Worm gear for DN50-150
Core Technical Specifications:
Body Construction: Precision-cast stainless steel (SS304/SS316) ensuring corrosion resistance and structural integrity
Pressure Rating: Designed for PN10 to PN25 standards (150 PSI max working pressure)
Temperature Resilience: Stable performance across -20°F to 400°F (-29°C to 204°C) range
Sealing Systems: Multiple seat options including resilient PTFE for standard applications and metal seats for high-temperature services
Leakage Class: Meets ANSI FCI 70-2 Class IV (standard) up to Class VI (bubble-tight) depending on configuration
Disc Configuration Comparison:
| Disc Type | Application Suitability | Key Advantage |
|---|---|---|
| Concentric | Water, low-pressure systems | Cost-effective solution |
| Double Eccentric | HVAC, moderate pressure | Reduced wear, improved sealing |
| Triple Eccentric | Critical process, high-pressure | Zero leakage, fire-safe design |
Operational Benefits:
Minimal Maintenance: Eccentric designs eliminate seat friction during operation
Bidirectional Sealing: Effective flow control in both directions
Compact Installation: Wafer design reduces weight and space requirements by 40% compared to lug-type valves
Actuator Compatibility: Flange mounting pads accept pneumatic/electric actuators (ISO 5211 standard)
Industry Applications:
Chemical processing plants: Handling acids, alkalis and solvents
Power generation: Cooling water systems and boiler feed applications
Water treatment facilities: Pump discharge control and distribution networks
Marine systems: Seawater handling and ballast control
Shanghai Sote Valve leverages advanced CNC machining centers and automated testing equipment to maintain dimensional accuracy and performance consistency across all valve sizes. Our production facility implements rigorous quality checks including hydrostatic testing at 1.5 times rated pressure and material traceability documentation. With over 15 years of industrial valve manufacturing experience serving global clients, we provide technical support throughout valve selection, installation, and maintenance phases.
Frequently Asked Questions (FAQ):
Q1: What is the main difference between triple eccentric and concentric designs?
A: Triple eccentric valves feature offset disc geometry that completely avoids seat contact during rotation, enabling zero-leakage performance suitable for critical services. Concentric designs have centered discs with resilient seats for general-purpose applications.
Q2: Can these valves handle abrasive slurries?
A: For slurry applications, we recommend selecting metal-seated triple eccentric valves with hardened stellite overlays on sealing surfaces to resist particle erosion.
Q3: What actuator mounting options are available?
A: All valves feature ISO 5211 mounting pads compatible with pneumatic quarter-turn actuators (double-acting or spring-return) and electric actuators. Torque values are provided in product documentation.
Q4: Are fire-safe certifications available?
A: Triple eccentric models can be manufactured to meet API 607/API 6FA fire-test requirements upon request, with documentation provided.
Q5: What is the lead time for custom sizes?
A: Standard sizes (2"-24") ship within 15 working days. Custom sizes (above 24") require 30-45 days for manufacturing and testing.
Q6: Do you provide installation gaskets and bolts?
A: Installation kits with appropriate gaskets and fasteners matching your pipeline specifications can be supplied separately. Consult our technical team for compatibility.
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