Plug Valves
1. Overview:
Plug valves are quarter-turn valves that use a cylindrical or conical plug to control the flow of fluid through the valve. They are known for their simple design and ease of operation.
2. Size Range:
Typically available from 1/2" (15 mm) to 12" (300 mm), with larger sizes available upon request.
3. Body Material:
Cast Iron: Common for general applications; cost-effective and durable.
Ductile Iron: Offers better strength and toughness compared to cast iron.
Stainless Steel (304/316): Ideal for corrosive environments and applications requiring hygiene.
Carbon Steel: Suitable for high-pressure applications.
PVC/CPVC: Used for chemical applications where corrosion resistance is essential.
4. Plug Material:
Stainless Steel: Commonly used for durability and corrosion resistance.
Bronze: Good for various fluids, often used in water applications.
PTFE-Coated: Provides excellent chemical resistance and low friction for easy operation.
5. Seat Material:
PTFE: Excellent chemical resistance; used in aggressive applications.
Rubber: Used in low-pressure applications; provides a tight seal.
Viton: Suitable for high-temperature and chemical applications.
6. Pressure Rating:
Commonly rated up to 150 psi (PN10) or 300 psi (PN16), depending on design and materials.
Higher pressure ratings available for specific requirements.
7. Temperature Range:
Typically from -20°C to 200°C, depending on the materials used.
8. Operation Type:
Manual: Lever or handwheel-operated for direct control.
Automated: Available with pneumatic or electric actuators for remote control.
9. Connection Types:
Flanged: Standard connection for ease of installation.
Threaded: Suitable for smaller sizes and easy installation.
Socket Weld: Common in high-pressure applications.
10. Design Standards:
API 599: Standard for plug valves used in the oil and gas industry.
ANSI/ASME B16.5: Standard for flanged fittings.
ISO 17292: International standard for plug valves.
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MW Enterprises General Trading Company