Bellows Seal valves

Engineered for zero-leakage performance in high-pressure environments, Frigate’s Bellows Seal Globe Valves provide total emission containment for critical industrial pipelines. This robust valve eliminates fugitive emissions, protecting your personnel, environment, and bottom line from hazardous fluid leaks.

Bellows Material

Inconel 625 / SS321 / SS316L (Multi-ply)

Bellows Cycle Life

Minimum 10,000 Cycles (Fully open to fully closed)

Seat / Plug Trim Material

Stellite 6 Faced / Hardened Stainless Steel

M.O.C (Material of Construction)

CS / AS / SS / DSS / SDSS / SASS / MONEL / HASTELLOY / INCONEL

Size Range

15 NB to 50 NB

Order Type

Quantity Range

Lead Time*

Standard Stock Order

1 – 25 Units

5 – 7 Business Days

Bulk Production Run

26 – 100 Units

4 – 6 Weeks

Custom High-Alloy Run

100+ / Custom MOC Units

8 – 10 Weeks

*Delivery windows are indicative estimates. Exact timelines depend on specific MOC availability, casting schedules, and mandatory technical testing criteria.

Product Description

Frigate’s Bellows Seal Globe Valve features a multi-ply metallic bellows assembly that forms a hermetic seal around the moving stem, entirely isolating the process fluid from the atmosphere. Built for extreme conditions up to Class 1500# and 300°C, it serves as an impenetrable barrier against toxic, volatile, or costly media losses.

End Connections

Threaded / Welded

Pressure Rating

Class 800# to 1500#

Maximum Operating Temperature

300°C

Sealing Mechanism

Metallic Bellows with Secondary Graphite Packing

Flow Characteristic

Linear / Throttling Capabilities

Operation Type

Manual Handwheel (Actuation Compatible)

Emission Class

Zero Fugitive Emissions (TA-Luft compliant design)

Applicable Standards

API 602 / ASME B16.34

Testing Standards

API 598 / ISO 15848-1

Quality Certification

ISO 9001, CE Certified

Nominal Valve Size (Inches)

Stem Diameter (mm)

Body Height (mm)

Total Component Length (mm)

1/2″ (15 NB)

215

150

1″ (25 NB)

260

190

1-1/2″ (40 NB)

335

240

2″ (50 NB)

380

270

Technical Advantages

By replacing traditional packing rings with a flexible, high-endurance metallic bellows system, this valve ensures maintenance-free operation and a certified zero-leakage lifespan. The dual-sealing architecture combining the primary bellows with safety-backed secondary graphite packing dramatically reduces pipeline downtime and operational volatility.

Compliances

ISO 9001:2015

ISO 14001:2015

ISO 45001:2018

Let's Get Started

Need reliable valve for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Industry Applications

Chemical & Petrochemical Processing

Prevents toxic chemical spills, explosive media leakage, and hazardous organic compound escapes in aggressive chemical processing lines.

Oil & Gas Refining

Safeguards volatile refining processes against high-pressure fugitive emissions, maintaining strict regulatory compliance across gas streams.

Power Generation & Steam Systems

Handles ultra-high-temperature steam loops and vacuum systems efficiently, preventing thermal energy losses and minimizing pressure drops.

Pharmaceutical & Fine Chemical Manufacturing

Eliminates external contamination entry points to ensure absolute purity during high-value substance processing and chemical synthesis.

Nuclear and Defense Industries

Provides an uncompromising hermetic seal for highly radioactive or hazardous cooling fluids where manual maintenance is impossible.

Thermal Fluid & Hot Oil Systems

Manages heat transfer oils safely up to 300°C, removing fire risks caused by typical stem packing degradation in hot oil networks.

Frigate Approved Quality Management System

At Frigate, quality is built into every stage of manufacturing. Our approved Quality Management System ensures that every material component.

Incoming Material Checking

Before production begins, all incoming materials are checked against specifications, drawings, and supplier documents.

In-Process Inspection

Quality is monitored during manufacturing to prevent defects and maintain process consistency.

Final Dimensional Checking

Finished parts are inspected before dispatch to confirm compliance with customer drawings and tolerances.

Packaging Control

Finished components are packed safely to prevent damage during handling and transportation.

Incoming Material Checking

In-Process Inspection

Final Dimensional Checking

Packaging Control

Quality Document

To help buyers evaluate our quality systems, we provide sample documents that reflect our inspection and reporting standards.

How We Delivered

Complex geometries engineered solutions that move businesses forward.

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units per month

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Units Manufactured Monthly

0 +

Defence-Grade Cable Supply

Cost savings

0 %

Flange Assembly for Pump

Faster Production

0 %

Having Doubts? Our FAQ

Do you provide material traceability certificates and EN 10204 3.1 certification with the shipment?

Yes. Every Frigate shipment includes complete Material Traceability Reports (MTRs), mill test certificates, heat numbers, and EN 10204 3.1 certification as standard practice to ensure full compliance with your plant’s quality asset management protocols.

What options are available for the Material of Construction (M.O.C.)?

We offer a versatile range of base materials depending on your fluid environment. Options include standard Carbon Steel (CS), Alloy Steel (AS), and Stainless Steel (SS), alongside highly corrosion-resistant alloys like Duplex (DSS), Super Duplex (SDSS), Monel, Hastelloy, and Inconel.

Can Frigate perform supplementary non-destructive testing (NDT) or helium leak testing prior to dispatch?

Absolutely. While all units undergo standard API 598 hydrostatic and pneumatic pressure testing, we can execute specialized client-witnessed or third-party NDT protocols—including Positive Material Identification (PMI), radiography, dye penetrant testing, and high-sensitivity helium mass spectrometer leak testing upon project request.

The standard specification lists threaded and welded ends; can you supply these valves with raised face (RF) flanges?

Yes. We can customize the end connections to integrate seamlessly into your existing piping layout. Our engineering team can weld matching slip-on or weld-neck flanges compliant with ASME B16.5 directly to the valve body and fully re-test the assembly before final packaging.

Are Frigate valves compliant with international high-pressure standard protocols?

Absolutely. The Valve is strictly designed and manufactured to meet ASME B16.34 and API 602 standards, handling pressure classes from Class 800# up to Class 1500# with absolute structural integrity.

We'd love to Manufacture for you!

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Components Built for Critical Performance

Engineered Products for Critical Applications

Bellows Seal valves

Order Type

Quantity Range

Lead Time*

Product Description

End Connections

Pressure Rating

Maximum Operating Temperature

Sealing Mechanism

Flow Characteristic

Operation Type

Emission Class

Applicable Standards

Testing Standards

Quality Certification

Nominal Valve Size (Inches)

Stem Diameter (mm)

Body Height (mm)

Total Component Length (mm)

Technical Advantages

Compliances

ISO 9001:2015

ISO 14001:2015

ISO 45001:2018

Let's Get Started

Industry Applications

Frigate Approved Quality Management System

Quality Document

How We Delivered

Having Doubts? Our FAQ

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Bellows Seal valves

Get Latest Price

Bellows Seal valves

Get Latest Price