The Long Neck Wafer Type Model 25 Butterfly Valve is a high-performance flow control solution engineered for versatility and precision. Designed for seamless integration into industrial piping systems, this valve combines a space-saving wafer body with an extended neck design, ensuring ease of operation and accessibility even in constrained installations.
Built with premium industrial-grade materials including ASTM A126 Cast Iron and A536 Ductile Iron, the Model 25 is optimized for durability and leak-proof sealing. Whether managing water, air, or chemical media, its robust construction and diverse seat options make it an ideal choice for engineers seeking reliability and long-term operational efficiency in valve and cock manufacturing applications.
Detailed Parameters
| Body Material | Cast Iron (ASTM A126 CL. B), Ductile Cast Iron (ASTM A536 65-45-12) | Disc Material | Ductile Iron (Nickel plated/Nylon coated), Stainless Steel (CF8, CF8M, CF3, CF3M), Al-Bronze |
|---|---|---|---|
| Upper/Lower Stem | Zinc Plated Steel, Stainless Steel (ASTM A276 Type 316, 410, 420; ASTM A582 Type 416) | Seat Materials | NBR, EPDM, Neoprene, PTFE, Viton |
| O-Ring Options | NBR, EPDM, Neoprene, Viton | Bushing Materials | PTFE, Nylon, Lubricated Bronze |
| Spring Pin | Carbon Steel, Stainless Steel | Size Range | 2" to 12" (50mm to 300mm) |
| Design Type | Wafer Type with Long Neck | Standard Compliance | ASTM Material Standards |
Key Advantages
Superior Corrosion Resistance
Available in Stainless Steel and Al-Bronze discs to ensure stability in aggressive chemical environments.
Extended Service Life
High-grade ASTM materials and lubricated bronze bushings minimize wear and tear over time.
Precision Sealing
Multiple seat options (PTFE, Viton, EPDM) provide a zero-leakage seal for diverse fluid types.
Optimized Ergonomics
The long neck design simplifies manual operation and improves lever accessibility in tight spaces.
Compact Wafer Design
Minimal face-to-face dimensions allow for easy installation and replacement in existing pipelines.
Versatile Application
Suitable for HVAC, water treatment, and general industrial equipment manufacturing.
Product Gallery
Management Platforms
Inventory Control
Real-time tracking of valve sizes from 2" to 12" to ensure immediate shipping.
Quality Assurance
Strict adherence to ASTM standards for every cast iron and steel component.
Order Monitoring
Transparent production cycles from material sourcing to final pressure testing.
Logistics Sync
Integrated shipping platforms for global distribution of heavy industrial valves.
Material Management
Direct sourcing of Type 316 and CF8M stainless steel for maximum purity.
Technical Support
Engineering guidance for selecting the right seat material based on media pH.
Investment Return Comparison
| Feature | Standard Valves | Model 25 Long Neck |
|---|---|---|
| Installation Time | Standard | Reduced by 20% |
| Maintenance Cycle | Frequent | Extended (due to Bronze Bushing) |
| Seal Integrity | Basic | Superior (Multi-material options) |
| Operational Ease | Difficult in tight spots | Highly accessible |
| Total Cost of Ownership | Moderate | Low (Less downtime) |
Frequently Asked Questions
Wafer valves are sandwiched between two flanges, making them more compact and cost-effective, whereas lug valves have threaded inserts for independent piping disconnection.
For high-temperature or chemically aggressive environments, we recommend PTFE or Viton seats due to their superior thermal stability and chemical resistance.
Yes, by specifying a Stainless Steel (CF8M) disc and stem, the valve provides excellent resistance to saline corrosion.
No, the long neck affects the ergonomics and operation accessibility; the pressure rating is determined by the body material and seat specifications.
Our bodies are manufactured according to ASTM A126 Class B for Cast Iron and ASTM A536 65-45-12 for Ductile Cast Iron.
Yes, the stem design allows for the mounting of pneumatic or electric actuators, depending on the torque requirements of your specific size.
