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German standard bellows globe valve
The German Standard Bellows Globe Valve is a high-performance fluid control device designed for critical applications where stem leakage cannot be tolerated. Here's a detailed core description of this product:
1. Construction and Design: The valve features a robust design with a bellows seal that provides a hermetic seal, preventing any leakage along the stem. This design is crucial for hazardous and lethal services where fugitive emissions must be minimized.
2. Materials: Manufactured using forged steel or cast steel, these valves offer superior strength and corrosion resistance. The bellows are made from Inconel™ or stainless steel, providing long life and maximum resistance to corrosion.
3. Operation: The globe valve operates on a quarter-turn mechanism, with a 90-degree rotation of the stem to open or close the valve. This operation results in low operating torque and convenient maintenance.
4. Applications: These valves are used in arduous services such as chlorine, phosgene, hydrofluoric acid, NH3, CO2, and urea, among others. They are Eurochlor compliant and suitable for high-precision control of highly viscous, non-linear, and non-Newtonian polymer fluids.
5. Advantages: The bellows design eliminates media loss and satisfies environmental regulations. It also results in zero maintenance, lower operating costs, and reduced monitoring expenses. The valve offers three stem seals for safety: metal bellows, graphite packing, and a backseat in the open position.
6. Seating: The valve features a hard-faced Stellite® 6 seating surface, which provides a long service life. Soft seat options are also available for specific applications.
7. Pressure and Temperature Ratings: The German Standard Bellows Globe Valve is designed to handle a wide range of pressures from Class 150 to Class 800 and temperatures from -20°F (-29°C) to the maximum allowable for the materials.
8. Standards and Certification: The valves are tested to ASME B16.34 / API 598 and meet MSS SP-117 standards. They come with a 5-year bellows warranty, ensuring reliability and performance.
9. Actuation: The valves can be equipped with pneumatic, hydraulic, or electric actuators, providing flexibility in operation and control.
In summary, the German Standard Bellows Globe Valve is a high-performance, leak-tight control valve designed for demanding applications where safety and reliability are paramount. Its unique bellows seal design, robust construction, and adherence to strict standards make it an excellent choice for critical fluid control tasks.
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