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 where space is limited, providing an efficient seal and reliable operation across a wide range of industrial fluid applications.
Built with premium-grade materials including ASTM A126 Cast Iron and A536 Ductile Iron, the Model 20 ensures exceptional structural integrity and resistance to wear. Its versatile seat options—ranging from EPDM and NBR to PTFE and Viton—allow for seamless integration into various chemical and temperature environments, making it a preferred choice for professionals in the general equipment manufacturing sector.
Detailed Parameters
| Body Material | Cast Iron (ASTM A126 CL.B) / Ductile Iron (ASTM A536 65-45-12) | Disc Material | Ductile Iron (Nickel/Nylon coated) / Stainless Steel (CF8, CF8M, etc.) |
|---|---|---|---|
| Stem Material | 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 Design | Standard Compliance | ASTM International Standards |
Key Advantages
Superior Corrosion Resistance
Utilizing high-grade stainless steel and specialized coatings to withstand harsh industrial environments.
Extended Service Life
Precision-engineered stems and bushings reduce friction, ensuring long-term operational reliability.
Versatile Sealing
Multiple seat material options provide an airtight seal for varied media and temperature ranges.
Compact Installation
The short neck design allows for easy installation in tight spaces without compromising performance.
Precision Dimensions
Strict adherence to dimensional standards ensures seamless fitment with existing piping systems.
Industrial Grade Build
Certified materials like ASTM A536 ensure the valve handles high-pressure demands safely.
Product Gallery
Management Platforms
Inventory Control
Real-time tracking of valve stock across multiple warehouse locations.
Quality Assurance
Strict QC testing protocols for every unit before shipment.
Maintenance Alerts
Scheduled reminders for seal replacements to prevent leaks.
Order Tracking
End-to-end visibility from production to final delivery.
Logistics Sync
Optimized shipping routes for rapid international delivery.
Technical Support
Direct access to engineering data for customized installations.
Investment Return Comparison
| Feature | Standard Valves | Model 20 Series |
|---|---|---|
| Maintenance Frequency | High (Frequent) | Low (Optimized) |
| Installation Space | Large Requirement | Compact Footprint |
| Material Durability | Standard Grade | Industrial Premium |
| Seal Integrity | Basic Rubber | Advanced Multi-Material |
| Operational Life | 3-5 Years | 8-12 Years |
Frequently Asked Questions
Lug type valves allow for "dead-end" service, meaning they can be installed at the end of a piping run and still be securely bolted to the flange, providing superior versatility compared to wafer types.
For high-temperature or chemically aggressive environments, PTFE or Viton seats are recommended due to their superior thermal stability and chemical resistance.
The short neck reduces the overall height of the valve assembly, making it ideal for tight spaces and reducing the lever arm stress on the stem during operation.
Yes, when configured with a Stainless Steel disc (CF8M) and a PTFE seat, the Model 20 provides excellent resistance to corrosive industrial fluids.
ASTM A126 is standard grey cast iron, while ASTM A536 is ductile iron, which offers significantly higher strength, toughness, and impact resistance.
Refer to our detailed dimensions list (Inch or MM). The size corresponds to the nominal pipe diameter. Ensure the flange drilling matches the Lug dimensions provided.
