Understanding About Ductile iron gate valves

The gate valve is a gate that opens and closes. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.

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A Ductile iron valve is predominantly crafted from ductile iron, a type of iron that contains spheroidized free carbon, commonly referred to as graphite. The notable abundance of graphite nodules within ductile iron results in superior mechanical properties compared to other forms of cast iron.

Features of ductile iron gate valve

1. High intensity

The high strength of ductile iron valves gives them good toughness and durability.

2. Anti-corrosion

Ductile iron valves have good anti-corrosion properties, will not be corroded by chemicals, and are not prone to rust.

3. Wear resistance

Ductile iron valves have high material density and small friction coefficient, so they are more wear-resistant than other metal materials.

4. Accurate size

Ductile iron valves are widely used in pipeline systems because of their high processing precision and accurate dimensions, which can ensure tight integration and avoid leakage and other problems.

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Reduced number of maintenance times and replacement costs of the valves.

Application of ductile iron gate valve

Ductile iron gate valve can be used in various acid and alkali environments, and is especially suitable for marine and chemical industries.

4 inch Knife Gate Valve

As the name suggests, the knife gate valve has a knife-shaped oblique cut at the bottom of the flat valve plate, which has the function of cutting off the medium, so that the valve can be closed without being blocked by the medium.

Advantages & Application of knife gate valve

This valve is generally used to open and close the circulation of pulp, coal ash, chemical raw materials, sewage, food and other media. The pressure range is generally used within 1.6MPa, and the temperature is generally used below 120°C. Special materials can also be used at high temperatures.

The valve has significant advantages such as light switch, reliable sealing, good elastic memory and long service life. It can be widely used as a regulating and intercepting device in pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy systems, etc.

Types of knife gate valve

There are plate gate valves, knife-type mud gate valves, knife-type slag gate valves, single-clip slurry gate valves and manual single-clip knife type gate valves. 4 inch knife gate valve is very common among them.

 The slide valve is a diverter valve that uses the valve core (plunger, valve disc) to slide on the sealing surface to change the position of the fluid inlet and outlet channels to control the flow direction of the fluid. Spool valves are often used in steam engines, hydraulic and pneumatic devices to enable motion mechanisms to achieve predetermined direction and stroke actions or to achieve automatic continuous operation. 4 inch is a common size for slide gate valve, too.

YINUO, a reliable manufacture of gate valves from China

 We have exported kinds of iron valves to worldwide, such as electric gate valve, double disc gate valve, split butterfly valve, automotive vacuum check valve, etc. Meanwhile, we also have won unanimous praise from customers in more than 30 countries and regions.

• ·Lower wholesale prices than others.
• ·exporting to Hong Kong, Vietnam, Pakistan, Chile, Bolivia etc.
• ·Our products have passed UL, FM, CE, BSI, ISO and other certifications.
• ·The production workshop has more than 50 people, 3 senior R&D designers.
• ·5 production lines, and a daily output value of more than 2 million.
• ·Support processing customization, processing according to drawings.
• ·Certainly, we also accept OEM service for oversea customers.

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