Description
Bellow Seal valve is a high-performance fluoroplastic-lined regulating valve designed for maximum reliability and precision in handling highly corrosive and hazardous media. Its corrosion-resistant straight-through single-seat control valve design makes it a trusted choice in industries that demand both safety and efficiency.
Advanced Construction for Superior Durability
This valve is manufactured using advanced high-pressure injection molding technology, ensuring exceptional build quality. The inner wall of the valve body and all components in contact with the fluid are lined with **polytetrafluoroethylene propylene (F46), PTFE, and PFA** to provide outstanding corrosion and aging resistance. Additionally, it integrates polytetrafluoroethylene bellows for effective sealing, guaranteeing leak-free operation even in the harshest working environments.
Versatile Application Range
The Bellow Seal valve is engineered for the control of highly corrosive media, such as acids and alkalis, as well as toxic and volatile gases and liquids**. Its superior material construction and design make it ideal for industries like chemical processing, power generation, and pharmaceuticals, where process safety and precision are paramount.
Key Features
Corrosion Resistance
Built to withstand nearly all corrosive substances, including concentrated nitric acid and aqua regia, this valve delivers unmatched durability.
Excellent Sealing Performance
With double sealing using bellows and packing, the valve ensures zero external leakage, enhancing safety for operations involving hazardous substances.
Low Leakage
Featuring a soft-sealed valve core and seat, the leakage rate is minimal, even under challenging operating conditions.
Equipped with Pneumatic Actuator
The valve comes with a pneumatic actuator that delivers a large output force, enabling precise flow control while maintaining a compact and space-saving structure.
| Body | Stainless steel,CF8,CF8M,CF3M, WCB | |
| Body style | Lined pfa ptfe | |
| Size | DN15-DN200 | |
| Seat | PTFE | |
| Connection | Flange | |
| Valve cover | Bellow Seal | |
| Pressure | ASME B16.34 class 150, PN16 | |
| Air supply pressure | 5.5bar | |
| Pneumatic Actuator | Double acting,Single acting normally closed, acting,Single normally open | |
| Option | solenoid valve,?limit switch box?, filter, E/P positioner, hand wheel | |
FAQ
What is a bellow seal control valve?
A bellow seal control valve is a type of valve designed to regulate the flow of fluids, gases, or vapors in industrial systems while providing an enhanced seal to prevent leaks. It features a bellows assembly, which acts as a secondary seal to ensure a leak-tight operation, especially in systems handling hazardous or highly pressurized media.
What are the primary functions of a bellow seal control valve?
The main functions of a bellow seal control valve include:
- Regulating flow and pressure within a system.
- Preventing leakage of hazardous or corrosive media into the environment.
- Enhancing safety and operational reliability by utilizing a dynamic secondary seal.
What industries commonly use bellow seal control valves?
Bellow seal control valves are widely used in industries where safety and precision are critical, including:
- Petrochemical and chemical processing
- Pharmaceutical manufacturing
- Power generation (nuclear and thermal plants)
- Food and beverage processing
- Pulp and paper industry
What are the advantages of bellow seal control valves over traditional valves?
Bellow seal control valves provide several benefits:
Leak Prevention: The metal bellows eliminate stem packing leaks, making them ideal for handling toxic, volatile, or environmentally hazardous media.
Extended Lifespan: The bellow assembly reduces wear and tear on valve components, improving durability in demanding conditions.
Precise Control: These valves ensure accurate flow and pressure regulation under variable operational conditions.
Enhanced Safety: They prevent harmful emissions and maintain system integrity, critical in industries with strict safety standards.
Why is the bellow seal important in control valves?
The bellow seal serves as a barrier between the media being handled and the external environment. It prevents leaks through the valve stem, which is a common concern in traditional designs. This is particularly crucial in applications involving dangerous or environmentally sensitive substances, ensuring compliance with safety and emissions regulations.
Pneumatic control valve catalog download
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??
CAGE TYPE CONTROL VALVE? ? ? ? ? ? ? ? ? SINGLE SEAT CONTROL VALVE
