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China DN700 WCB Cast Steel Flange Gate Valve Suppliers - High Torque with Flexible Actuation from Factory
| 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.
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) gate valve: Metal sealed structure, temperature resistance range -29℃ ~ 540℃, suitable for media such as water, oil, steam, etc.
Alloy steel material (WC6/WC9) gate valve: 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.
Packing
📦
Standard export wooden case packaging
Application Scenarios
The large size gate valve widely used in large-diameter pipeline systems in industries such as oil and gas, electricity, municipal water supply and drainage, chemical engineering, metallurgy, and people's livelihoods.
Frequently Asked Questions
QWhat temperature range can the metal seat gate valve handle?
The metal seat gate valve covers a wide temperature range. Carbon steel (WCB) variants handle -29℃ to 540℃, alloy steel (WC6/WC9) variants can withstand up to 650℃, and soft sealing (PTFE/EPDM) models operate between -20℃ and 180℃.
QWhat international standards does this gate valve comply with?
This gate valve is manufactured in compliance with EN, API, DIN, and GOST standards, ensuring broad acceptance across global industrial projects and export markets.
QIs the sealing performance bidirectional?
Yes. The gate valve features bidirectional sealing with a zero-leakage sealing grade, making it suitable for critical pipeline systems where fluid containment is essential in both flow directions.
QCan the packing be replaced without shutting down the pipeline?
Yes. The packing box design supports online packing replacement, which means maintenance can be carried out without interrupting pipeline operation, significantly reducing downtime and maintenance costs.
QWhat industries is this gate valve suitable for?
This large size gate valve is widely used across oil and gas, power generation, municipal water supply and drainage, chemical engineering, metallurgy, and other industrial pipeline systems requiring large-diameter flow control.
QHow is the gate valve packaged for export?
All gate valves are packaged in standard export wooden cases, designed to protect the product during international shipping and handling, meeting common export logistics and customs requirements.