Clarke

The Clarke Dilating Disc Valve is a specialized type of valve known for its precise control and reliable performance in various industrial applications. Here are its key features:

1. Unique Dilating Disc Mechanism

• Instead of a traditional rotating or sliding disc, it features a dilating (expanding and contracting) disc that adjusts to regulate flow.
• This design provides a smooth, controlled flow adjustment with minimal turbulence.

2. Precise Flow Control

• Offers high precision in throttling and modulating flow, making it ideal for applications requiring fine-tuned adjustments.
• Maintains a linear flow characteristic, allowing for predictable operation.

3. Minimal Pressure Drop

• The dilating mechanism ensures a larger flow path when open, reducing pressure loss across the valve.
• Improves system efficiency by minimizing energy consumption.

4. Excellent Sealing and Tight Shut-Off

• Provides a bubble-tight seal, reducing the risk of leaks.
• Often used in applications requiring a zero-leakage shut-off.

5. Low Wear and Longer Lifespan

• The absence of traditional friction-based sealing elements reduces wear.
• Extends the valve’s operational life, leading to lower maintenance costs.

6. Corrosion and Erosion Resistance

• Often constructed from high-grade stainless steel or corrosion-resistant alloys.
• Suitable for handling abrasive, corrosive, or high-pressure media.

7. Wide Range of Applications

• Used in industries such as oil & gas, chemical processing, power generation, and water treatment.
• Suitable for handling liquids, gases, and steam.

8. Compact and Robust Design

• The design allows for installation in tight spaces while maintaining durability.
• Reduces weight and footprint compared to some other valve types.

Key Specifications

1. Sizes and Pressure Classes

• Sizes: Available from ¼ inch up to 12 inches. Larger sizes can be provided      upon request. ​ 
• Pressure Classes: Supports ASME pressure classes ranging from 150 lbs to 1500 lbs. ​ 

2. Temperature Range

• Operational from -46°C (-50.8°F) up to 260°C (500°F). Options for cryogenic and higher temperature applications are available upon request. ​ 

3. Compliance and Certifications

• Designed in accordance with multiple industry standards, including:​ 
  • ASME B16.34​ 
  • IEC 60534-3-3​ 
  • IEC 60534-3-2​ 
  • IEC 60534-3-1​ 
• Conforms to ANSI/FCI 70-2 leakage specifications. ​ 

4. Materials of Construction

• Standard materials include:​ 
  • Carbon Steel​ 
  • Stainless Steel