Description
Technical Parameters
Butterfly Valve seals
| Properties |
Test Method |
Values |
| Compound |
- |
100% Viton FKM |
| Hardness (Shore A) | ASTM D2240 | 75 |
| Density (Specific Gravity) | ASTM D297 | 2.00 g/cm2 +/- 5 |
| Tensile Strength | ASTM D412 | 50 kg/cm2 |
| Elongation at Break | ASTM D412 | 200% |
| Compression Set (25% 24hrs @ 70°C) | ASTM D395 Method B | 55% |
| Polymer Content | _ | |
| _ |
Certification standards for Butterfly Valve seals
ISO standards: ISO 5752 (valve dimensions), ISO 10631 (valve seals).
API standards: The American Petroleum Institute (API) has issued a series of standards related to valves and seals, such as API 609 (Butterfly Valve Design and Manufacturing), API 622 (Valve Seal Leakage Test).
ANSI standards: The American National Standards Institute publishes ANSI B16.34 (valve design). Complying with ANSI standards can ensure the compatibility and interchangeability of seals with other components.
PED certification: Pressure Equipment Directive (PED) pressure equipment and components sold in the European market.
Introduce
Butterfly Valve seals are rubber seals used in chemical butterfly valves. Butterfly valves are popular industrial valves found in the chemical industry. To regulate the flow of fluids, they utilize the rotating motion of the valve disc to reach a completely open or fully closed condition.
Advantage
- Effective Leak Prevention: Butterfly valve seals are designed to block all potential leak paths, including those at pipes, flanges, and operating shafts, which is critical for applications involving corrosive or hazardous materials.
- Durability and Service Life: Made from high-quality materials such as Viton, FKM, VMQ, and HNBR, these seals are wear-resistant. Using soft sealing materials reduces friction during operation, which results in longer service life and less frequent maintenance.
- Low Operating Force: The design of butterfly valve seals allows for lower torque requirements when closing the valve. This means less force is required to achieve a tight seal, which increases the efficiency of the system and reduces wear on valve components.
- Resistance to Environmental Factors: Some of the materials used in butterfly valve seals have excellent resistance to temperature changes and chemical corrosion, making them suitable for handling corrosive fluids or operating in extreme conditions.
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