Bellows Seal Globe Valve features bellows sealing for zero leakage, suits high temp/pressure, ideal for toxic/corrosive media in critical industries.
Size Range: DN15 ~ DN300
Pressure Range: Class 150~2500 | PN16~PN420
Design Standards: API 602, API 623, ASME B16.34, BS 1873
Material Range: Carbon Steel, Stainless Steel (304/316), Alloy Steel
End Connections: Flanged (RF, RTJ), Socket Weld, Threaded (NPT)
Seal Type: Metal Bellow + Soft/Metal Seat
Body Structure: Straight-through, Angle Type
Leakage Class: ANSI FCI 70-2 Class V/VI
Precautions for Bellows Seal Globe Valve
Bellow Seal Globe Valve
Metal bellows are the main feature of a Bellows globe seal valve. There are two types of bellows:
i. Formed Bellow – They are made by rolling the flat sheet into a tube and longitudinal fusion welding. After this, the tube is mechanically formed into bellow with rounded and widely spaced folds.
ii. Welded leaf Bellow – In this type, the washer-like plates of thin metal are welded together. The welding is performed on the inside and outside of the washer-like plate. The folds per unit length in welded leaf bellows are more.
The amount of movement per fold is the same for both formed and welded-leaf bellows. So, for the same stroke rate, the mechanically formed bellows are two to three times longer than their welded leaf equivalent.
The lower end and the stem assembly is welded by automated seam welding, while the upper end is welded by automated seam welding on the connecting plate, creating a metal shield between the fluid medium and the environment, ensuring zero leakings from the valve stem.
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Chemical processing environments represent the ultimate test of industrial valve performance, combining aggressive media, extreme thermal profiles, and zero-tolerance safety requirements. With global chemical production projected to reach $6.8 trillion by 2028 and emissions regulations intensifying worldwide, TIANYU engineered globe valves deliver precision flow management certified with zero-bubble sealing integrity. Designed for critical applications from […]
Bellow Seal Globe Valve features bellows sealing for zero leakage, suits high temp/pressure, ideal for toxic/corrosive media in critical industries.
The unique design of Bellows Seal Globe Valve and its efficiency to provide leak-proof operations makes it the best-suited valve for a wide range of applications, especially hazardous materials & where system media is at high temperatures. Durability, maintenance-free operations and cost-effectiveness is an added benefit with bellows valves.
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