Concentric type Butterfly Valve with Ductile Iron Body and Bronze Disc

A Concentric Type Butterfly Valve with a Ductile Iron Body and Bronze Disc is a reliable and versatile valve used for controlling fluid flow in various applications. Here’s a breakdown of its features:

Key Features:

Body Material: Ductile Iron

Ductile iron is a strong and durable material with excellent mechanical properties, including good tensile strength, flexibility, and resistance to cracking. It is preferred over cast iron due to its enhanced toughness.

Ideal for medium-pressure applications, ductile iron can withstand significant stress and offers long-term durability in harsh environments.

 

Disc Material: Bronze

Bronze is known for its superior corrosion resistance, particularly in water-based systems, and is often chosen for its ability to handle a wide range of fluids, including water, oil, and steam.

A bronze disc ensures smooth operation and longer service life in environments where metal-to-metal wear or corrosion could be a concern.

 

Concentric Design

In a concentric butterfly valve, the disc and the stem are centrally aligned. This provides a uniform sealing surface and is typically used in low- to medium-pressure systems.

The disc is centered within the valve body, and the valve opens and closes by rotating the disc 90 degrees on a shaft.Sealing Mechanism

Concentric butterfly valves typically use a resilient seat (like EPDM or NBR) that presses against the bronze disc to create a tight seal, preventing leaks.

Operation

This valve can be manually operated with a lever or gear mechanism or automated using pneumatic or electric actuators.

Common Applications:

Water Treatment and Distribution: Suitable for potable water, sewage, and wastewater systems.

HVAC Systems: Used for regulating flow in heating and cooling systems.

Irrigation Systems: Controls water flow in agricultural irrigation.

General Industrial Processes: Can be used in chemical, petrochemical, and other industrial applications where corrosion resistance is essential.

Advantages:

Cost-effective: The combination of ductile iron and bronze makes this type of valve both affordable and reliable.

Corrosion Resistance: The bronze disc ensures superior resistance to corrosion, particularly in water and steam applications.

Ease of Maintenance: Simple design allows for easy maintenance and repair.

This valve is a practical choice for a variety of fluid control systems due to its durability, ease of operation, and resistance to harsh environments.

 

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