DN2200 Fully Enclosed Goggle Valves Complete Pressure Testing and Shipped

Six sets of DN2200 fully enclosed goggle valves customized for a Russian client were produced in the workshop of Zhengzhou Jingong Technology Co., Ltd. They successfully passed the pressure testing at one go and have been loaded for delivery.

Fully enclosed spectacle valves feature excellent sealing performance and reliable shut-off capability, widely used in various scenarios. Below are detailed introductions to their main application scenarios and performance characteristics:

Fully Enclosed Goggle Valves Main Application Scenarios

1. Metallurgical Industry
Blast furnace systems: Installed in gas pipelines, hot air pipelines, etc., to cut off or switch media like gas and air, preventing gas leakage and ensuring production safety. For example, during blast furnace pipeline maintenance, these valves cut off the gas source to create a safe working environment for maintenance personnel.

Coking plants: Used in coke oven gas pipelines to control gas transportation and shut-off, ensuring accurate media flow direction and avoiding safety hazards and environmental pollution caused by gas leakage.

2. Chemical Industry
Toxic/hazardous media pipelines: When transporting toxic/hazardous or flammable/explosive media like chlorine, ammonia, and benzene, these valves serve as reliable shut-off devices to prevent media leakage from harming personnel and the environment.

Corrosive media systems: For pipelines with strong acids, alkalis, etc., the valves are made of corrosion-resistant materials (such as stainless steel, fluorine lining) to effectively resist corrosion and ensure service life and sealing performance.

3. Energy Industry
Natural gas transmission pipelines: Installed in branch stations, gate stations, etc., of long-distance natural gas pipelines to cut off gas for pipeline maintenance or equipment replacement, ensuring safe operation of the transmission system.

Heat pipelines: Used in central heating systems to cut off steam or hot water pipelines, facilitating maintenance of the heating network and reducing heat loss.

4. Environmental Protection Industry
Waste gas treatment systems: Installed at the inlet/outlet of industrial waste gas treatment equipment (like desulfurization towers, denitrification devices) to cut off waste gas during equipment maintenance or failure, preventing untreated emission and meeting environmental requirements.

Sewage treatment plants: Used in sludge pipelines and sewage pipelines to control media flow, facilitating debugging and maintenance of sewage treatment equipment.

Fully Enclosed Goggle Valves Performance Characteristics

1. Superior Sealing Performance
Adopts a double gate structure. The gate and seat are combined via forced or elastic sealing with high-precision sealing surfaces, achieving zero leakage—especially suitable for strict sealing requirements.

Multiple sealing structures (like packing seals, bellows seals) at the stem prevent media leakage, further enhancing sealing reliability.

2. High Strength and Durability
The valve body is made of high-strength materials (such as cast steel, forged steel), with a compact structure that withstands high pressure and temperature, suitable for high-pressure and high-temperature conditions.

The sealing surfaces are usually surfacing with hard alloys (like Stellite), featuring good wear resistance and erosion resistance to extend service life.

3. Convenient and Safe Operation
Supports manual, electric, pneumatic, etc., driving methods for flexible operation. Manual operation uses a handwheel or wrench; electric/pneumatic driving enables remote control via a system to improve automation.

Clearly marked open/close indicators help operators judge the valve status. It also has a self-locking function to prevent accidental opening/closing due to vibration, ensuring system safety.

4. Good Flow Performance
The straight-through channel ensures smooth flow with low resistance, reducing energy loss and suitable for large-flow media transportation.

5. Wide Application Range
Adapts to various media (gas, natural gas, steam, liquids, dust, etc.) and working conditions (high pressure, high/low temperature, corrosive media). Different materials and structures can be selected to meet diverse industrial needs.

Fully enclosed goggle valves play a key role in metallurgy, chemical, energy, environmental protection, etc., with their high sealing, strength, and wide applicability—critical for safe and stable operation of industrial pipeline systems. In practice, choose the right valve based on media characteristics and working conditions to fully leverage its performance.