OEM China GGG40 Bronze Seat Hard Seal Flange Gate Valve - Suppliers & Factory for High-Quality Ductile Iron Valves Supplier, Manufacturers

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Type: Metal to metal seated

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Series: Z45T-16/25Q

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Size: DN50-DN1000/2–40

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Pressure rating: PN16/PN25/PN64/150LB/300LB/600LB

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Design standard: BS/API/DIN

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Service: OEM & ODM

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Introducing our high-quality brass metal hard-sealed ductile iron gate valve, designed and manufactured by a leading China supplier and factory. Featuring a robust valve body made of ductile iron and a sealing surface crafted from brass/copper alloy, this valve combines the exceptional strength of ductile iron with the excellent wear and corrosion resistance of copper. It is ideal for applications requiring full open/close control of water, steam, oil, and various other media. Trust in our products as we uphold the highest manufacturing standards to meet your needs.

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Product Description

Technical Specifications
Valve Type: Metal seat gate valve Structure: Non-rising type
Standard: EN/API/DIN/GOST Workmanship: Investment casting
Sealing direction: Bidirectional Sealing grade: Zero leakage
Temperature: -30°C < T < 425°C Operation: Handwheel
GGG40 Bronze seat hard seal flange gate valve
Product Characteristics

The sealing surface of this GGG40 gate valve is made of brass/bronze alloy, which features high hardness and exceptional erosion resistance. It is specifically designed to handle media containing impurities without scratching, ensuring a significantly extended service life compared to standard valves.

GGG40 gate valve sealing surface
Key Advantages
  • 1
    High Valve Body Strength

    Constructed from high-grade ductile iron, the body provides superior strength, toughness, and impact resistance compared to gray cast iron, making it excellent for high-pressure environments and resistant to water hammer.

  • 2
    Reliable Bidirectional Sealing

    Features a metal-to-metal hard sealed structure. It supports tight bidirectional sealing, meeting the most stringent zero leakage standards for industrial safety.

  • 3
    Smooth Operation & Low Torque

    Equipped with a stainless steel stem and a brass valve stem nut. This combination ensures a smooth fit, low operating torque, and prevents sticking or seizing even after long-term inactivity.

Professional Packing

All valves are packed using standard export wooden cases to ensure maximum protection during international transit.

Gate valve wooden case packing
Export standard packaging
Application Scenarios

The bronze seat ductile iron gate valve is highly versatile, ideal for municipal water systems, HVAC, fire protection, power plants, and chemical processing. It is suitable for controlling water, oil, and steam media.

Valve application scenario 1
Valve application scenario 2
Frequently Asked Questions
Q: What material is the sealing surface of the GGG40 gate valve made of?
The sealing surface is made of brass/bronze alloy, offering high hardness, excellent erosion resistance, and resistance to scratching. This makes it especially suitable for media containing impurities.
Q: What is the operating temperature range of this gate valve?
This GGG40 bronze seat gate valve is designed to operate within a temperature range of -30°C to 425°C, suitable for diverse industrial applications.
Q: Does this gate valve support bidirectional sealing?
Yes. It features a metal hard sealed structure with bidirectional sealing capability, ensuring reliable shutoff in both flow directions.
Q: What standards does this gate valve comply with?
It is manufactured in compliance with international standards including EN, API, DIN, and GOST to meet global project requirements.
Q: What industries or applications is this valve suitable for?
It is widely used in municipal water supply, HVAC, fire protection, power generation, and chemical pipelines for water, oil, and steam control.
Q: How is the valve stem designed to prevent seizing?
The valve stem is stainless steel paired with a brass nut, providing a smooth fit and low torque to prevent seizing during long-term use.

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