Differences and Advantages of Bellows Sealed Globe Valves and Ordinary Sealed Globe Valves

Bellows Sealed globe valves vs. Regular Sealed Globe valves: Differences and Advantages in Industrial Applications
In industry, valve selection is critical; they are directly related to the safety, efficiency and cost of fluid control. In this article, we will introduce you to two common Globe valves – bellows sealed globe valves and ordinary sealed globe valves, and compare their features and advantages, to help you better understand the differences between these two types of valves in industrial applications.
First, the bellows sealed globe valve: innovative design, zero leakage guarantee
Bellows sealed globe valve, through advanced automatic roll welding welding technology, between the fluid medium and the external environment to build a strong metal barrier. This design not only ensures zero leakage of the valve stem, but also provides the convenience of not requiring frequent maintenance.
Key Features:
Double sealing design: the double guarantee of bellows and packing, even if the bellows fails, the stem packing can effectively prevent leakage.
Compact structure, reliable sealing: Reasonable structural design ensures the sealing and performance of the valve, and at the same time beautiful appearance.
Reduced energy loss: the design without fluid loss helps to reduce energy waste and enhance the safety of plant equipment.
Wear-resistant and corrosion-resistant: The sealing surface is made of surfaced Co-based cemented carbide, which is wear-resistant, corrosion-resistant and has a long service life, reducing maintenance costs and operating costs.
Stem tempering and surface treatment: After tempering and surface nitriding treatment, the stem has good corrosion and friction resistance.
Second, ordinary sealing globe valve: classic design, widely used
Ordinary sealed globe valve, also known as cut-off valve, is one of the most commonly used valves in industry. It has low friction between sealing surfaces during opening and closing, high durability, and relatively simple manufacturing and maintenance.
Main features:
Simple structure, easy maintenance: compared with the gate valve, the structure of the shut-off valve is more simple, lower manufacturing and maintenance costs.
Good sealing: no relative sliding between the valve flap and the valve body sealing surface when opening and closing, reducing wear and abrasion, prolonging the service life.
Large opening and closing torque: although the opening and closing is more laborious, but the valve flap stroke is small, making the valve height is relatively low.
Fluid resistance: the valve body media channel is more zigzag, resulting in increased fluid resistance and increased power consumption.
Medium flow direction is fixed: globe valve only allows unidirectional flow of media, the installation needs to pay attention to the direction.
Disadvantages:
Fluid resistance: the force required to open and close is larger, increasing energy consumption.
Media restrictions: not applicable to the media with particles, viscosity, easy to coking.
Poor regulation performance: not precise enough when regulating flow.
Third, the comparison of bellows sealed globe valve and ordinary sealed globe valve
In industrial applications, the leakage of ordinary globe valves may bring serious environmental pollution and loss of life and property. High temperature, highly toxic, flammable and explosive, radioactive and other media leakage is even more worrying. The bellows sealed globe valve completely solves this problem through its unique bellows sealing design.
Advantages of bellows sealed globe valve:
Eliminate the risk of leakage: the bellows seal design avoids the shortcomings of ordinary globe valve stem packing seal aging fast and easy to leak.
Improve energy efficiency: reduce fluid loss, improve energy utilization efficiency.
Enhance safety: increase the safety of production equipment, reduce the risk of accidents caused by leakage.
Reduce maintenance costs: Reduce maintenance costs and the need for frequent maintenance.
Provide a clean and safe working environment: Ensure a clean and safe working environment and protect the health of employees.
In summary, bellows sealed globe valve and ordinary sealed globe valve have their own characteristics and advantages. When choosing, you need to weigh the specific application scenarios and needs. We hope that this article can help you better understand these two types of valves and provide useful reference for your industrial applications.