Bellow Seal Globe Valve
GL25 Series (Straight Type)
Engineered for steam isolation applications.

What’s Inside Matters
Engineered for Performance
The GL25 Series incorporates a fully sealed bellows system that prevents fugitive emissions and ensures zero stem leakage over extended cycles.

01. Oversized Handwheel
Oversized handwheel for easy handling and position indicator allows user to know (OPEN / CLOSE) status of the valve.
02. Backseat On Stem
Metal back seat has been provided to arrest leakage to the atmosphere in case of bellow failure.
03. Tongue and Groove Body And Bonnet
Tongue and Groove Body and Bonnet designed to avoid any leak between joints.
04. High Quality Multiply Bellow
Completely welded multiple layer stainless steel bellows are secured against torque and designed to last as per MSS SP-117 cycle life.
05. Standard 360° Free Rotation and Conical Plug
Standard 360° free rotation and conical plug provides a tighter closure while maintaining seat clean from shards. Both seat and plug are made out of hardened chromium steel 1.4021 or with stellite.
06. Plug and Seat Hard Faced
TA-LUFT certified full size safety gland packing made of pure graphite together with our bellows, guaranteeing 100% zero leak to the atmosphere. Can also be supplied in PTFE on request for other chemical applications.
GL25 Series
The GL25 Series Bellow Seal Globe Valve is purpose-built for steam isolation in high-temperature and high-pressure environments.
Specifications
Design
Straight Type
Body Material
Cast Iron
Forged Steel / A105
Ductile Iron
St. St. 304
Cast Carbon Steel
St.St 316 / 1.4571
Plug Material & Design
Plug:
St. Steel 1.4021 + Hard Faced 13% Cr
Plug Design:
1. Parabolic (For regulating)
2. Conical (For On Off)
3. Balancing (For 5” and above, high pressure)
Seat / Bellow Material
321 Ti
St.St 304
St.St 316 / 1.4571
Hastelloy C
Connection
BSPT – Tappered
NPT
Socket Weld
Flanged End
Butt Weld
Size
DN15 (½”) to DN150 (6”)
Automation Option & Accessories
N/A
Flow Capacity
For Standard Plug:
KVS = 4.8 – 1691
For Throttling Plug:
KVS = 4.36 – 1410
Pressure Rating
ANSI 150
ANSI 300
ANSI 600
ANSI 900
PN 16
PN 25
PN 40
Key Features
- Oversized Handwheel
- Backseat On Stem
- Tongue and Groove Body And Bonnet
- High Quality Multiply Bellow
- Standard 360° Free Rotation and Conical Plug
- Plug and Seat Hard Faced
Performance Testing

Hydro Test

Air Leakage Test
Application Versatility
Built to Perform Across Industries
Our valves are engineered to deliver consistent performance across a wide range of demanding industrial environments.
Palm oil and oleochemical lines
General manufacturing
Water and wastewater pipelines
Power plant steam isolation
Chemical and blending applications
Palm oil and oleochemical lines
General manufacturing
Water and wastewater pipelines
Power plant steam isolation
Chemical and blending applications
Available Options
Enhance Your Valve Functionality
Choose from a range of accessories designed to extend performance, simplify operation, and suit specific installation needs.