Trunnion Mounted Ball Valves

Engineered for high-pressure, severe-service industrial applications, Frigate’s Trunnion Mounted Ball Valves deliver unyielding sealing performance and low operating torque. Our precision-forged configurations ensure absolute operational safety, zero leakage, and structural integrity across demanding midstream, petrochemical, and power generation pipelines.

Standard Sizes

2” to 12” Nominal Bore (Full & Reduced Bore configurations available)

Material Form

Heavy-Duty Closed Die Forging (Ensures zero structural porosity and optimal grain flow)

Materials of Construction (MOC)

(Body/Bonnet/Trunnion): ASTM A105N, ASTM A350 LF2; Adapter: ASTM A105QT, ASTM A350 LF2; Trim (Ball/Seat/Stem): ASTM F316, ASTM A105N+ENP, ASTM A322 Gr 4140+ENP; Top-Works: ASTM A36, ASTM A105N

Pressure Class Ratings

ASME Class 150, 300, 600, 900, and 1500

Primary Design Standards

API 6D, ASME B16.34, and ISO 14313

Order Type

Quantity Range

Lead Time*

Sample

1 – 5 Units

4 – 6 Weeks

Batch Production

6 – 25 Units

6 – 8 Weeks

High-Volume Contract

26+ Units

10 – 12 Weeks

*Listed production timelines serve as indicative engineering estimates; finalized delivery schedules are calculated upon formal technical review and material allocation.

Product Description

Frigate’s Trunnion Mounted Ball Valves utilize a robust, multi-piece split body construction designed to securely anchor the ball under extreme pressure configurations. By separating the mechanical sealing load from the stem, this specialized configuration ensures smooth quarter-turn operation and extended service cycles in highly corrosive or abrasive fluid environments.

Face-to-Face Dimensions

ASME B16.10 standard manufacturing envelopes

End Connections

Flanged Raised Face (RF), Ring Type Joint (RTJ) per ASME B16.5, or Butt-Weld (BW) per ASME B16.25

Fire-Safe Certification

Qualified and certified to API 607 and API 6FA standards

Testing & Inspection

Factory pressure tested in strict compliance with API 6D and API 598 (High-pressure hydrostatic / Low-pressure pneumatic)

Operational Temperature Range

-46°C to 200°C (Governed by selected forging grade and secondary elastomer limits)

Sealing Configuration

Double Block and Bleed (DBB) capabilities utilizing independent, spring-loaded floating seats

Stem Design

Blow-out proof, internally inserted stem configuration featuring triple environmental O-ring seals

Anti-Static Safety Feature

Guaranteed electrical continuity between ball, stem, and body via integrated grounding devices

Trim Surface Coating

25-micron minimum Electroless Nickel Plating (ENP) on dynamic sealing boundaries

Actuator Interfacing

Integrated ISO 5211 top-works mounting plate for direct-mount lever, gear, or automated actuation

Nominal Valve Size (inches)

Stem Diameter (mm)

Body Height (mm)

Total Component Length (mm)

2”

150

3”

198

122

4”

239

6”

325

226

8”

426

269

10”

501

318

12”

591

369

Technical Advantages

By integrating premium forging grades with elective Electroless Nickel Plating (ENP), our TMBV lineup minimizes structural frictional losses while maximizing atmospheric corrosion resistance under heavy cyclic loads. The independent, spring-loaded seat mechanism continuously maintains positive upstream and downstream sealing, drastically cutting down long-term field maintenance overhead and sudden pressure drop risks.

Compliances

ISO 9001:2015

API-6D

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Industry Applications

Oil & Gas Transmission

Essential for high-pressure midstream pipelines, managing raw crude and natural gas over long-distance transit networks without pressure drops.

Petrochemical Refining

Manages hazardous hydrocarbon compounds and secondary refining products through volatile, thermal-cycling operational environments safely.

Power Generation Facilities

Deployed in thermal and hydro-generation cooling loops to reliably isolate critical boiler feedwater lines at severe temperatures.

Chemical Process Plants

Provides leak-proof containment for highly corrosive batch chemical fluids, leveraging advanced ENP protective coatings against wear.

Water Treatment Infrastructure

Offers durable, large-bore flow control for high-volume municipal wastewater lines and heavy desalination high-pressure systems.

Mining & Slurry Processing

Resists high erosion in mining tailings facilities, managing heavy mineral grit or dense abrasive slurry mixtures efficiently.

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 Manufactured Monthly

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Flange Assembly for Pump

Faster Production

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Having Doubts? Our FAQ

Does Frigate’s TMBV design feature Double Block and Bleed (DBB) capabilities?

Yes. Our trunnion mounted ball valves are engineered with independent, spring-loaded seats that seal on both the upstream and downstream sides simultaneously. This allows the body cavity pressure to be safely vented or drained while the valve is in both the fully open or fully closed positions.

How do your trunnion mounted ball valves handle fire-safe pipeline requirements?

All Frigate TMBVs are designed and certified to meet API 607 and API 6FA fire-test standards. In the event of a fire that destroys the soft primary elastomer seals, a secondary metal-to-metal seating mechanism automatically engages against the ball to prevent catastrophic process medium leakage.

What factory pressure tests are conducted on these valves prior to shipment?

Every single valve undergoes rigorous factory acceptance testing (FAT) in strict compliance with API 6D and API 598. This includes high-pressure hydrostatic body and seat tests, as well as low-pressure pneumatic seat testing to ensure zero-leakage performance before leaving our facility.

Are these trunnion mounted valves suitable for low-temperature applications?

Yes. By utilizing certified ASTM A350 LF2 forging materials, our valves retain excellent impact toughness and pressure containment capabilities in low-temperature environments.

Can Frigate customize the dimensions or mounting flanges for specific setups?

Absolutely. While we maintain a standardized millimeter-based production envelope for sizes 2” through 12”, our engineering team can modify top-works mounting plates and adapter flanges to align with your exact pipeline footprint.

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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

Trunnion Mounted Ball Valves

Order Type

Quantity Range

Lead Time*

Product Description

Face-to-Face Dimensions

End Connections

Fire-Safe Certification

Testing & Inspection

Operational Temperature Range

Sealing Configuration

Stem Design

Anti-Static Safety Feature

Trim Surface Coating

Actuator Interfacing

Nominal Valve Size (inches)

Stem Diameter (mm)

Body Height (mm)

Total Component Length (mm)

Technical Advantages

Compliances

ISO 9001:2015

API-6D

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

Trunnion Mounted Ball Valves

Get Latest Price

Trunnion Mounted Ball Valves

Get Latest Price