The Long Neck Lug Type Model 30 Butterfly Valve is a high-performance flow control solution engineered for industrial precision and durability. Designed with a lug-style body, it provides secure installation and the ability to operate as a bidirectional shut-off valve, making it ideal for complex piping systems where reliability and tight sealing are paramount.
Featuring a versatile range of premium materials including ASTM A126 cast iron and stainless steel components, the Model 30 is built to withstand challenging environments. From water treatment to chemical processing, this valve ensures optimal flow regulation with minimal pressure drop, combining a long-neck design for easier actuation with a robust sealing mechanism.
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), Al-Bronze |
|---|---|---|---|
| Seat Options | NBR, EPDM, Neoprene, PTFE, Viton | Upper Stem | Zinc Plated Steel / Stainless Steel (ASTM A276 316, 410, 420) |
| Lower Stem | Zinc Plated Steel / Stainless Steel (ASTM A276 316, 410, 420) | O-Ring Materials | 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 (Model 30) |
Key Advantages
Superior Corrosion Resistance
Utilizing ASTM A351 stainless steel and nickel-plated discs to prevent rust and erosion in aggressive media.
Extended Service Life
High-grade ductile iron and reinforced bushings reduce wear and tear during frequent cycling.
Tight Sealing Performance
Multiple seat options (PTFE, Viton, EPDM) ensure bubble-tight shut-off across various temperatures.
Easy Actuation
The long-neck design provides better leverage and accessibility for both manual and automated operation.
Precision Engineering
Strict adherence to ASTM standards ensures dimensional accuracy for seamless system integration.
Versatile Application
Suitable for a wide range of fluids including water, oil, and mild chemicals thanks to flexible material lists.
Product Gallery
Management Platforms
Inventory Control
Real-time tracking of Model 30 stock across multiple sizes from 2" to 12".
Quality Assurance
Rigorous pressure testing and material verification per ASTM standards.
Logistics Tracking
Optimized shipping for heavy industrial valves to ensure timely project delivery.
Technical Support
Expert guidance on material selection for specific chemical compatibilities.
Custom Fabrication
Ability to customize seat and disc materials based on unique site requirements.
Lifecycle Monitoring
Maintenance schedules and wear analysis for long-term operational efficiency.
Investment Return Comparison
| Feature | Standard Valve | Model 30 Lug Type |
|---|---|---|
| Installation Flexibility | Limited | High (Bidirectional) |
| Seal Integrity | Moderate | Superior (Multiple Elastomers) |
| Maintenance Cycle | Frequent | Extended (Low-Wear Parts) |
| Material Grade | Basic Carbon Steel | Premium ASTM Alloy/Stainless |
| Total Cost of Ownership | Higher (due to replacements) | Lower (long-term durability) |
Frequently Asked Questions
Lug type valves have threaded inserts that allow them to be bolted directly to the pipe flange, enabling one side of the piping system to be removed while the valve remains in place, unlike wafer valves which are sandwiched between flanges.
For high-temperature environments, PTFE or Viton seats are recommended due to their superior thermal stability and chemical resistance compared to NBR or EPDM.
Yes, by selecting the Stainless Steel (CF8/CF8M) disc and PTFE seat options, the Model 30 can effectively handle many corrosive media.
The Model 30 is available in a wide range of sizes, typically from 2 inches (50mm) up to 12 inches (300mm) to fit various industrial pipe diameters.
Yes, the lug design allows it to be used for end-of-line service since it can be bolted to a blind flange and maintain a seal without a mating pipe.
The long-neck design increases the distance between the valve body and the actuator/handle, providing better clearance and easier access in tight or insulated piping installations.
