Lubricated Plug Valves

Frigate’s high-performance lubricated plug valves deliver a continuous, bubble-tight shutoff and exceptional cavity-free reliability in the world’s most demanding industrial environments. Engineered for high-pressure, abrasive, and corrosive media, these robust valves utilize a pressurized sealant system to ensure smooth operation, eliminate seizing, and provide an active renewable seal you can depend on.

Size Range

1/2″ to 36″ (DN15 to DN900)

Pressure Class Ratings

ASME Class 150, 300, 600, 900, 1500, 2500

Design Standards

API 6D, API 599, BS 5353

Face-to-Face Dimensions

ASME B16.10, API 6D

Flange End Connections

ASME B16.5, ASME B16.47

*Listed timelines are indicative ranges based on current raw material availability; exact delivery schedules will be finalized upon formal quotation.

Product Description

Designed for optimal flow control in severe-service applications, Frigate’s lubricated plug valves feature a robust, metal-to-metal seat configuration that thrives where standard valves fail. The innovative pressure-balanced design prevents plug jamming even under extreme thermal cycling, significantly reducing maintenance downtime and extending operational life across your piping systems.

Butt-Weld End Connections

ASME B16.25

Testing & Inspection Standards

API 6D, API 598, ISO 5208

Fire Safety Certification

API 6FA, API 607 Third-Party Certified

Body Materials

ASTM A216 WCB/WCC, A352 LCC, A351 CF8M, Duplex SS

Plug Materials

ASTM A216 WCB/CF8M with Case Hardening / ENP Coating

Sealant & Packing Material

High-Temperature Synthetic PTFE / Graphite

Operating Temperature Range

-29°C to +230°C (Standard), Up to +400°C (High-Temp Sealant)

Flow Characteristic

High-Capacity Rectangular Port (Standard), Round Port (Optional)

Actuation Options

Wrench/Lever, Heavy-Duty Worm Gearbox, Pneumatic, Electric

NACE Compliance

MR0175 / ISO 15156 (For sour gas service)

Technical Advantages

Our lubricated plug valves feature a continuous, pressurized sealant film that prevents metal-to-metal friction and ensures bubble-tight sealing even when processing heavy particulates. Additionally, the inherent cavity-free design eliminates dead spaces where slurry or solids can settle and solidify, guaranteeing smooth, low-torque actuation and uncompromised flow reliability over long-term service.

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Industry Applications

Oil & Gas Transmission

Provides reliable, fast-acting isolation for high-pressure crude oil pipelines and natural gas trunklines, mitigating the risk of fugitive emissions.

Petrochemical Refining

Handles aggressive hydrocarbon processing, catalytic cracking, and sour gas applications where metal-to-metal seating integrity is critical.

Slurry & Mining Operations

Excel in transporting highly abrasive tailings, mineral concentrates, and coal slurries without internal clogging or erosion of the sealing faces.

Chemical Processing Plants

Ensures safe operation and reliable containment when managing corrosive acids, volatile solvents, and hazardous chemical feedstocks.

Wastewater & Sewage Treatment

Manages raw sewage, thick sludge, and grit-laden effluent effortlessly due to a robust cavity-free architecture that prevents media buildup.

Power Generation Systems

Deployed in heavy-duty boiler feed systems, ash handling, and cooling water circuits requiring high thermal tolerance and zero-leakage performance.

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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Having Doubts? Our FAQ

What are the primary advantages of a pressure-balanced plug design over a conventional plug valve?

Conventional plugs can become wedged due to high line pressure or thermal expansion, causing high operating torque or seizing. Frigate’s pressure-balanced design equalizes the pressure above and below the plug, preventing it from locking into the seat and ensuring consistently low operating torque.

How does the cavity-free architecture prevent line clogging in severe service?

Unlike ball or gate valves that feature internal body cavities where stagnant solids, slurry, and polymers can settle and harden, our lubricated plug design leaves no dead space. The media moves smoothly through the port without any areas for entrapment.

Can these valves handle abrasive media without losing their tight seal?

Yes. The active injection of specialized sealant creates a high-pressure film that protects the metal seating faces from direct abrasive wear. It also flushes out trapped particulates every time the valve is lubricated.

How often do Frigate lubricated plug valves require sealant injection?

Maintenance intervals depend on cycle frequency, temperature, and media characteristics. For high-cycle or severe slurry applications, regular routine lubrication schedules are recommended, while clean, static isolation lines require minimal maintenance.

Are Frigate plug valves suitable for firesafe-rated pipeline operations?

Absolutely. Our lubricated plug valves feature an inherent metal-to-metal secondary seal and are fully certified to API 607 and API 6FA fire safety standards, ensuring reliable containment even during a high-temperature thermal event.

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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

Lubricated Plug Valves

Product Description

Butt-Weld End Connections

Testing & Inspection Standards

Fire Safety Certification

Body Materials

Plug Materials

Sealant & Packing Material

Operating Temperature Range

Flow Characteristic

Actuation Options

NACE Compliance

Technical Advantages

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

Lubricated Plug Valves

Get Latest Price

Lubricated Plug Valves

Get Latest Price