Bellow Seal Globe Valve

Overview

Bellow seal globe valves are specialized valves designed to provide enhanced sealing capabilities and reliability in demanding applications.

Key features

• Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay
• Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay
• Bellow Seal Design:
• Feature: Incorporates a metallic bellow (often stainless steel) as part of the stem assembly.
• Benefit: Provides a secondary seal that isolates the stem from the process fluid, preventing leakage and ensuring no contact between the fluid and the stem.
• Globe Valve Configuration:
• Feature: Typical globe valve design with a spherical body and a disc (or plug) that moves perpendicularly to the flow path.
• Benefit: Allows for effective throttling and control of flow rates, suitable for applications requiring precise regulation.
• Secondary Sealing Mechanism:
• Feature: Besides the bellows, utilizes packing or gland packing to further enhance sealing.
• Benefit: Ensures tight sealing under varying pressures and temperatures, enhancing valve integrity and operational safety.
• Forged Construction:
• Feature: Often constructed from forged materials such as stainless steel, carbon steel, or alloy steel.
• Benefit: Provides strength and durability to withstand high pressures and temperatures, maintaining reliability over extended periods.
• Yoke and Bonnet Assembly:
• Feature: Designed to accommodate mechanical loads and thermal expansion.
• Benefit: Ensures stability and reliability in diverse operating conditions, contributing to long-term performance.
• Variety of End Connections:
• Feature: Available with flanged, butt-weld, or socket-weld ends.
• Benefit: Offers flexibility in installation and compatibility with different piping systems and configurations.
• Actuation Options:
• Feature: Can be manually operated or equipped with actuators (electric, pneumatic, hydraulic).
• Benefit: Allows for remote operation and integration into automated control systems, enhancing operational efficiency.

Applications

• Refineries
• Hydrocarbon
• Energy and Process industries.

Benefits

• Zero Stem Leakage: The bellow seal isolates the stem from the process fluid, preventing leakage along the stem.
• Enhanced Safety: Provides a reliable sealing solution suitable for toxic, corrosive, or hazardous fluids.
• Long Service Life: Robust construction and effective sealing mechanisms contribute to extended service intervals and reduced maintenance requirements.
• Precise Control: Globe valve design allows for precise throttling and control of flow rates, supporting accurate process control.
• Versatility: Suitable for a wide range of applications in industries such as chemical processing, petrochemicals, power generation, and pharmaceuticals where sealing reliability is critical.
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