A bellows seal globe valve is an essential component in many industries, such as chemical, oil and gas, and petrochemical industries. It is a type of industrial valve used to regulate and control the flow of fluids, gases, and other media through a pipeline or system.
These bellows valves are widely used because of their unique design, which includes a bellows seal that protects the stem from corrosion and prevents fluid from eroding the stem. So it’s very common to see the condition for corrosive or toxic media.
Globe valves
Components of Bellows Seal Globe Valve
The bellows seal globe valve consists of body, disc, stem, bonnet, bellows seal, and packing. The valve body is the primary component that houses the valve disc, which controls the flow of media. The valve stem connects the valve disc to the actuator or handwheel, which opens or closes the valve. The bonnet covers the stem and packing and the bellows valve provides a seal to prevent leakage. The following is the photo of bellow seal globe valve.
Din globe valve with bellows
No.
Parts Name
Materials
1
Body
GS-C25/1.0619
CF8/1.4301
CF8M/1.4408
2
Seat
Overlay 13Cr
SS304
SS316
3
Disc surface
Overlay 13Cr
SS304
SS316
4
Stem
X20Cr13
SS304
SS316
5
Bellows
SS304/SS316/SS321/SS316T1
SS304/SS316/SS321/SS316H
SS316/SS321/SS3167I
6
Gasket
Graphite+SS
Graphrte+SS
Graphite+SS
7
Bellows cover
SS304ZSS316
SS304/SS316
SS316
8
Bonnet
GS-C25/1.0619
CF8/1.4301
CF8M/1.4408
9
Nut
A194 2H
A194 8
A194 8M
10
Bolt
A193 B7
A193 B8
A193 B8M
11
Packing
Graphite
Graphite
Graphite
12
Gland
c.s
CF8
CF8M
13
Pin
Steel
Steel
Steel
14
Guide piece
Steel
Steel
Steel
15
Stem nut
Ductile iron
Copper alloy
Copper alloy
16
Grease Nipple
H2
H2
H2
17
Hand wheel
Steel
Steel
Steel
18
Lock nut
A105
A105
A105
Types of Bellows Seal Globe Valve
There are several types of bellows seal valves and globe valves available in the market, each with unique design features and applications. Here are some of the most common types of bellows seal globe valves:
Welded Ends Bellow Seal Globe Valve
This type of valve has welded metal bellows that provides a flexible, leak-proof seal and protects the stem from corrosion. Welded ends bellows seal globe valves are ideal for high-temperature and high-pressure applications.
Flanged Bellow Seal Globe Valve
This type of valve has a flanged connection that makes it easy to install and remove. Flanged bellows seal globe valves are suitable for applications that require frequent maintenance and inspection.
Din globe valve with bellows
Socket-Welded Bellows Seal Globe Valve
This type of valve has socket-welded connection ends which are suitable for high-pressure applications.
Threaded Bellows Seal Globe Valve
This type of valve has a threaded connection that makes it easy to install and remove. Threaded bellows seal globe valves are commonly used for small pipeline.
Extended Bellows Seal Globe Valve
This type of valve has extended bellows that provide additional protection against corrosion and allows the valve to operate at extreme temperatures and pressures.
Api globe valve with bellows
Y Pattern Bellows Seal Globe Valve
The Y-Type Bellows Seal Globe Valve is an exceptionally secure and reliable component, featuring a double sealing structure of bellows and packing. This ensures complete protection from any potential leakage at the stem, making it ideal for use in pipelines carrying dangerous, flammable, explosive, toxic or valuable substances. Additionally, its construction ensures tight seals are maintained under high temperatures and pressures, while also minimizing any risk of leaks.
Din y type globe valve with bellows
THINKTANK is a reliable globe valve manufacturer that has been producing high-quality industrial valves for over three decades. Our valves are made from high-quality materials and are designed to meet the specific needs of each application, just feel free to contact us for a free consultation.
