Wafer Tilting Butterfly Check Valve
In the demanding world of fluid control, ensuring reliable backflow prevention is paramount for system integrity and safety. For applications requiring high-performance check valves with low pressure drop and swift response, the Tilting Disc Check Valve offers a superior solution. Our advanced design utilizes a disc that pivots on a central hinge, allowing for rapid closure upon flow reversal and minimal resistance during forward flow. This mechanism is ideal for preventing water hammer and ensuring system longevity. Among the various types available, our Non-hydraulic Tilting Butterfly Check Valve stands out for its purely mechanical operation, eliminating the need for external hydraulic systems and reducing maintenance complexity. For systems requiring manual intervention or testing, the Manual Tilting Butterfly Check Valve provides operators with direct control over the disc position. Built for durability in challenging environments, our Ductile Iron Tilting Butterfly Check Valve offers exceptional strength and corrosion resistance, making it a robust choice for water supply, wastewater, and industrial applications where material integrity is critical.
The Wafer Tilting Butterfly Check Valve represents a significant advancement in check valve technology. Its compact, wafer-style design allows for easy installation between flanges, saving considerable space and weight compared to traditional swing check or lift check valves. The core of its efficiency lies in the unique tilting disc mechanism. Unlike conventional designs, the disc is not fixed on a simple hinge but is engineered to tilt on a strategically positioned axis. This geometry creates a dynamic balance where fluid dynamic forces assist in both opening and closing sequences. During forward flow, the disc lifts smoothly with minimal obstruction, significantly reducing pressure loss and improving overall system energy efficiency. When flow diminishes or reverses, the combination of gravity and reverse flow dynamics causes the disc to snap shut swiftly and securely, effectively preventing backflow and the associated water hammer phenomena. This rapid closing action is crucial for protecting pumps, compressors, and other upstream equipment from damage.
Key Features & Technical Specifications
- Low Pressure Drop: Streamlined disc design minimizes turbulence and head loss.
- Rapid, Low-Impact Closure: Spring-assisted or gravity-assisted closing prevents slam.
- Compact Wafer Design: Lightweight and space-saving, fits between ANSI/ASME flanges.
- Bidirectional Sealing: Provides tight sealing in both flow directions where applicable.
- Low Maintenance: Simple design with few moving parts ensures long service life.
- Versatile Mounting: Can be installed in horizontal or vertical pipelines (flow direction dependent).
Standard Product Parameters
| Parameter | Specification / Range |
|---|---|
| Size Range (Nominal) | 2" to 48" (DN50 to DN1200) |
| Pressure Rating (ANSI Class) | Class 125, 150, 250, 300 |
| Body Material | Ductile Iron, Carbon Steel, Stainless Steel (304/316), Aluminum Bronze |
| Disc & Stem Material | Stainless Steel (410/316), Coated Carbon Steel, Bronze |
| Seat Material | EPDM, NBR, Viton, Metal (Stainless Steel) |
| Temperature Range | -20°F to 400°F (-29°C to 204°C) *Varies with seat material |
| End Connection | Wafer, Lug (Threaded or Through-hole) |
| Standards | API 594, API 6D, AWWA C508, ISO 5752 |
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