The Short Neck Lug Type Model 20 Butterfly Valve is a high-performance industrial flow control solution engineered for precision and durability. Featuring a compact "short neck" design, this valve is specifically optimized for installations with limited spatial requirements without compromising on sealing integrity or operational torque.
Constructed from premium materials including ASTM A126 Cast Iron and ASTM A536 Ductile Iron, the Model 20 is designed to handle a diverse range of media. Its versatility is further enhanced by a wide selection of seat materials such as EPDM, PTFE, and Viton, ensuring maximum chemical compatibility and long-term reliability in demanding manufacturing environments.
Detailed Parameters
| Body Material | Cast Iron (ASTM A126 CL.B) / Ductile Iron (ASTM A536 65-45-12) | Disc Material | Ductile Iron (Nickel plated/Nylon coated) / Stainless Steel (CF8, CF8M) |
|---|---|---|---|
| Upper/Lower Stem | Zinc Plated Steel / Stainless Steel (ASTM A276 Type 316, 410, 420) | Seat Options | NBR, EPDM, Neoprene, PTFE, Viton |
| O-Ring Material | NBR, EPDM, Neoprene, Viton | Bushing Material | PTFE, Nylon, Lubricated Bronze |
| Spring Pin | Carbon Steel / Stainless Steel | Size Range | 2" to 12" (50mm to 300mm) |
| Connection Type | Lug Type (Short Neck) | Standard Compliance | ASTM Material Standards |
Key Advantages
Superior Corrosion Resistance
Available in Stainless Steel and Nickel-plated options to withstand aggressive industrial chemicals.
Extended Service Life
High-grade ASTM materials ensure minimal wear and tear, reducing maintenance frequency.
Precision Sealing
Multiple seat materials (PTFE/Viton) provide leak-proof performance across various temperatures.
Compact Space Design
The short neck configuration allows for easy installation in tight piping manifolds.
Optimized Flow Rate
Engineered disc geometry minimizes pressure drop and maximizes throughput efficiency.
Easy Installation
Standard Lug type mounting allows for flexible dead-end or in-line service applications.
Product Gallery
Management Platforms
Material Tracking
Full traceability of ASTM cast iron and stainless steel certifications for every batch.
Quality Control
Rigorous pressure testing and dimensional verification based on industrial standards.
Inventory Alerts
Real-time monitoring of popular sizes (2" to 12") to ensure rapid shipping times.
Custom Configuration
Tailored material selection for seats and stems to meet specific chemical requirements.
Logistics Integration
Optimized packaging for heavy ductile iron valves to prevent transit damage.
Lifecycle Support
Comprehensive technical documentation and replacement part availability.
Investment Return Comparison
| Performance Metric | Standard Valves | Model 20 Butterfly Valve |
|---|---|---|
| Installation Cost | High (requires more space) | Low (compact short neck) |
| Maintenance Interval | Short (standard seals) | Long (Premium ASTM materials) |
| Seal Reliability | Medium | High (Multi-material options) |
| Operational Life | 3-5 Years | 8-12 Years |
| Total Cost of Ownership | High due to replacements | Low via long-term durability |
Frequently Asked Questions
The body is constructed from either Cast Iron (ASTM A126 CL.B) or Ductile Cast Iron (ASTM A536 65-45-12) to ensure structural strength.
For high-temperature or chemical-resistant needs, we recommend PTFE or Viton seats, which offer superior thermal stability.
Yes, the Lug Type design allows the valve to be bolted directly to the pipeline, making it suitable for both in-line and dead-end service.
The Model 20 is available in a wide range of sizes from 2 inches (50mm) up to 12 inches (300mm).
Yes, we offer discs in various stainless steel grades including CF8, CF8M, CF3, and CF3M for enhanced corrosion protection.
The short neck design minimizes the overall height of the valve, allowing it to fit into tighter spaces where standard valves would interfere with other equipment.
