Wholesale China DN700 WCB Cast Steel Flange Gate Valve Suppliers - High Torque with Flexible Actuation from Factory Manufacturers, Factory

,

Type: Metal to metal seated gate valves

,

Series: Z41H-64C

,

Size: DN50-DN1000/2–40

,

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

,

Design Standards: BS/API/DIN/GOST

,

Service: OEM & ODM solutions

,

Our gate valves are designed for large-scale applications and built with high torque capabilities, ensuring flexibility when paired with multi-turn electric actuators, hydraulic actuators, or worm gear manual mechanisms. As a leading supplier and factory in China, we are dedicated to providing high-quality metal seated gate valves that meet international standards and cater to your project needs.

,

Product Description

Valve Type: Metal seat gate valve Structure: 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
Characteristics

The valve body adopts integral casting or forging technology, and the wall thickness is strengthened according to the pressure level, which can withstand pipeline water hammer impact and industrial site vibration. The valve stem and gate are rigidly connected (T-shaped groove+bolt/pin shaft) to prevent damage to the sealing surface caused by gate shaking.

Metal Seat Gate Valve Structure
Key Advantages
1 Convenient Maintenance

The valve body and valve cover are connected by flanges, and there is no need to disassemble the entire valve during maintenance. Only the valve cover needs to be removed to replace internal components such as gate plates, seals, and packing; The packing box supports online replacement of packing, which does not affect the normal operation of the pipeline and significantly reduces maintenance costs.

2 High Temperature Resistance

• Carbon steel material (WCB): Metal sealed structure, temperature resistance range -29℃ ~ 540℃, suitable for media such as water, oil, steam, etc.

• Alloy steel material (WC6/WC9): Temperature resistance up to 650℃, suitable for high temperature reheating steam pipelines in power plants.

• Soft sealing structure (PTFE/EPDM): Temperature resistance range -20℃ ~ 180℃, suitable for low temperature and low pressure scenarios such as municipal water supply and drainage.

Valve Material Options
Packing & Delivery

📦 Standard Export Packaging: All valves are secured in robust export-grade wooden cases to ensure safe international transit.

Standard export wooden case packaging
Application Scenarios

The large size gate valve is widely used in large-diameter pipeline systems across various industries including oil and gas, power generation, municipal water supply and drainage, chemical engineering, metallurgy, and infrastructure projects.

Application 1
Application 2
Application 3
Frequently Asked Questions
What temperature range can the metal seat gate valve handle?
The valve handles a wide range depending on material: Carbon steel (WCB) covers -29℃ to 540℃, Alloy steel (WC6/WC9) reaches up to 650℃, and soft sealing models operate between -20℃ and 180℃.
What international standards does this gate valve comply with?
This gate valve is manufactured in strict compliance with EN, API, DIN, and GOST standards, ensuring compatibility with global industrial pipeline requirements.
Is the sealing performance truly zero leakage?
Yes, the valve is designed for bidirectional sealing with a zero-leakage sealing grade, making it ideal for high-pressure and critical fluid control environments.
Can maintenance be performed while the pipeline is active?
Yes. The packing box is designed to support online replacement, allowing maintenance teams to replace packing without shutting down the entire system, saving time and costs.
What are the main applications for large-size gate valves?
They are primarily used in large-diameter systems for oil and gas, municipal water networks, power plant steam lines, and heavy chemical processing industries.
How do you ensure the product arrives safely for export?
We use standard export-grade wooden cases that provide superior protection against impact and moisture during long-distance maritime or land transportation.

Related Products