Plug valves

One of the most critical issues faced in fluid control systems is valve leakage, which can result in contamination, inefficiencies, and safety hazards. Plug valves address this concern through their unique sealing mechanisms. The plug, which rotates inside the valve body, forms a tight seal against the valve seat. This tight seal prevents leakage even under high-pressure conditions, ensuring the integrity of the system. 

Valve Type

Rotary plug valve used for isolation or throttling in piping systems.

Flow Regulation Method

Plug rotates inside valve body to regulate or completely block fluid flow.

Differential Pressure Range

Operates efficiently within 0.2 to 16 bar differential pressure range.

Hydraulic Authority Recommendation

Minimum 30% hydraulic authority ensures precise flow control and valve responsiveness.

Valve Characteristic Curve

Available in linear or equal percentage flow characteristic options.

Product Description

The design of the plug valve also minimizes the contact surface between the plug and the seat, reducing the risk of wear and tear, and ensuring a consistent seal over time. Materials such as PTFE or elastomers are used in the sealing areas to provide additional resistance to chemical degradation, improving the valve’s reliability in harsh environments. 

Test Point Configuration

Equipped with two test points for pressure monitoring upstream and downstream.

Maximum Allowable Flow Velocity

Supports flow velocities up to 5 m/s for liquids; 3 m/s for gases.

Leakage Class (per EN 12266-1)

Certified to Class A for bubble-tight shut-off with zero visible leakage.

Body Material Options

Offered in cast iron, ductile iron, stainless steel, carbon steel, and bronze.

Design Pressure Class

Available in pressure classes PN10 to PN40 for diverse industrial applications.

Thermal Expansion Compatibility

Materials selected to handle thermal expansion without affecting performance.

Installation Sensitivity

Low sensitivity allows flexible installation in vertical or horizontal positions.

Control Accuracy

Maintains ±5% accuracy under steady-state flow conditions for reliable control.

Position Repeatability

Achieves ±1% repeatability ensuring consistent performance during operation cycles.

Technical Advantages

In many industrial processes, valves are exposed to high-velocity flows, abrasive particles, and aggressive fluids. This creates significant wear on valve components, leading to decreased performance, frequent repairs, and system downtime. Plug valves are built to withstand these challenging conditions due to their solid construction and wear-resistant materials. 

The plug itself is often constructed from high-strength materials such as hardened stainless steel or alloys designed to resist corrosion and abrasion. For applications involving slurries or high solids content, plug valves can be fitted with hard-faced plugs to further improve their resistance to wear. These features contribute to extended valve life and reduced maintenance needs, making plug valves suitable for heavy-duty industrial applications. 

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Industry applications

Water Treatment

Employed for isolating or regulating water flow in filtration and treatment plants, offering reliable operation under fluctuating pressures.

Power Generation

Used in steam and gas turbines for regulating flow in cooling and heating systems, enduring high thermal stresses.

Pharmaceutical Manufacturing

Provides contamination-free flow control for sterile environments, ensuring reliable sealing and ease of cleaning in production lines.

Food and Beverage

Controls fluid movement in processing lines, ensuring sanitary standards are met with easy maintenance and durable materials.

Pulp and Paper Industry

Regulates slurry and chemical flow in pulping and paper-making processes, maintaining efficiency and resistance to abrasive materials.

Mining & Mineral Processing

Handles slurries and abrasive fluids in mining operations, providing reliable shutoff and flow control under heavy-duty conditions. 

Compact Design and Space Efficiency

Modern facilities often face space constraints that influence equipment selection. Plug valves are ideal for tight installation spaces due to their compact design. They operate efficiently in confined areas, ensuring performance remains unaffected, making them the preferred option for smaller or more complex piping systems. 

The low profile allows these valves to fit seamlessly into systems where other valve types may be too bulky or cumbersome. This design enhances space utilization while maintaining high performance and reliability. Furthermore, the simple construction reduces the need for extra supports or accessories, streamlining installation and reducing costs. 

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure the longevity of plug valves in corrosive environments?

Frigate uses advanced materials such as corrosion-resistant alloys, including Hastelloy and Inconel, for the plug valve components. These materials provide exceptional resistance to chemical degradation, even in highly corrosive environments. Additionally, Frigate applies specialized coatings to the internal parts, further enhancing protection. Regular testing ensures that the valves meet industry standards for performance in harsh conditions.

What steps does Frigate take to ensure tight sealing in plug valves used in high-pressure systems?

Frigate designs plug valves with precision-machined components to guarantee a secure seal, even at extreme pressures. The valve’s plug is carefully engineered for optimal alignment with the seat, minimizing leakage. Frigate uses high-performance sealing materials like PTFE and elastomers to maintain pressure integrity. These valves are subjected to rigorous pressure testing to confirm their sealing reliability under operational conditions.

How does Frigate address the need for high flow control precision in plug valves?

Frigate’s plug valves feature a tapered plug design, allowing for fine adjustments in flow control. The rotating plug enables gradual and precise regulation of the fluid passage, maintaining desired flow rates under varying conditions. The valve’s design is optimized for throttling applications, ensuring accurate adjustments without compromising pressure. Frigate uses advanced manufacturing techniques to ensure each valve provides consistent flow control performance.

What makes Frigate’s plug valves suitable for use in high-temperature applications?

Frigate manufactures plug valves using heat-resistant alloys such as stainless steel and high-temperature ceramics, ensuring reliable performance under extreme conditions. The materials used are specifically chosen for their ability to maintain structural integrity and resist thermal expansion. Additionally, Frigate’s valves are equipped with high-temperature seals that retain their sealing properties even at elevated temperatures. These features ensure that the valves can withstand the thermal stresses found in industrial systems.

How does Frigate ensure plug valves are resistant to abrasive wear in slurry applications?

Frigate employs hardened stainless steel and wear-resistant coatings for the plug and seat components, ensuring longevity in abrasive slurry environments. The plug’s design is optimized to minimize direct contact with the seat, reducing wear over time. For added durability, Frigate offers valves with optional carbide or ceramic coatings that enhance resistance to abrasion. Regular maintenance checks and testing are performed to verify the valve’s ongoing effectiveness in these demanding conditions.

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LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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Plug valves

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Plug valves

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