Brand: Flowserve

Argus FK76M Trunnion Mounted Ball Valve

Name: Argus FK76M Trunnion Mounted Ball Valve – Manual & Quote
Brand: Flowserve

Description

Overview

The Argus FK76M trunnion mounted ball valve is engineered to deliver long-lasting, tight shut-off performance in oil and gas, petrochemical, and chemical industry applications. It features a modular design that allows simplified adaptation to diverse safety, emissions, and performance requirements across widely different process specifications, and is available in standard and severe service designs with both metal-seated and soft-seated configurations for reliable sealing performance.

As a trusted supplier of Flowserve valve solutions, Seven Star LLC proudly offers the Argus FK76M to oil and gas, petrochemical, chemical, and power generation applications across the Sultanate of Oman, Muscat, and the wider GCC. Argus valves are known for performance and reliability in the world’s harshest and most demanding processes, delivering superior service lifetimes that minimize the need for maintenance shutdowns on lines that cannot be taken offline lightly.

Measurement Principle

The FK76M features proven engineered elements that provide long service life with outstanding fugitive emissions performance and low operating torques even in the toughest applications, including a trunnion-mounted design, robust stem bearing system, spring-loaded seats with cavity relief, match-lapped balls and seats for bubble-tight performance, a true full bore for minimal pressure drop and pigging compatibility, and a fully guided, anti-blow-out stem. Reliability is ensured by seat design to FCI 70-2 Class VI, enabling it to meet the highest demands with zero tightness.

Special and customized designs are available for ultimate high-cycle, high-temperature, and similarly challenging applications where a standard commercial-grade valve would fail prematurely, with a stem supported in bearings that ensures seals remain free from operational loads. Special bearing configurations, including cladding of critical areas and trim coating configurations, further improve valve lifetime under extreme high-cycle service, reducing the frequency of unplanned maintenance interventions.

Engineering Design of the Argus FK76M

The FK76M is available in sizes from DN 65 to 900mm (NPS 2.5 to 36 inches) and pressure classes from PN 16 to 160 (ASME Class 150 to 900), designed for temperatures up to +1022°F (550°C) for the highest demands on valve tightness in both process and atmospheric (fugitive emission) service. These valves are designed to meet API 6D and ASME B16.34 requirements (API 608 on request), with fugitive emission compliance to ISO 15848 (API 641 on request) and fire-safe design to API 607 or ISO 10497.

Additional configurations include chambered ball seats and seat pocket body design for solid transport applications, process-optimized coatings and cladding options for severe service, flushing systems in critical valve areas to avoid media build-up, and high-performance oxygen service designs with in-house clean-room assembly and testing. Special alloys such as Inconel, Monel, Alloy 20, and Titanium are available for process and application-specific requirements, along with anti-static design per DIN EN ISO 17292 and functional safety (SIL) qualification.

Key Features

The Argus FK76M combines a modular trunnion-mounted design with extensive severe-service configurability. Core capabilities include:

Metal-seated or soft-seated configurations for reliable sealing across applications.
Seat design to FCI 70-2 Class VI for zero-tightness shutoff.
Size range DN 65-900mm; pressure class PN 16-160 (ASME 150-900).
Operating temperature up to +1022°F for extreme process and FE demands.
Fugitive emission compliance to ISO 15848; fire-safe to API 607/ISO 10497.
Trunnion-mounted design with fully guided, anti-blow-out stem.
Special alloy options: Inconel, Monel, Alloy 20, Titanium.
API 6D and ASME B16.34 compliant; functional safety (SIL) option available.

Industrial Applications

The Argus FK76M is well suited to oil and gas, petrochemical, and chemical facilities across Oman requiring critical shutoff performance in the harshest process conditions. Its extreme temperature rating, fire-safe design, and configurable severe-service options make it dependable for pipeline, refinery, and processing applications throughout the region, including oxygen and high-cycle solid transport services.

Technical Specifications

Full technical parameters for the Argus FK76M trunnion mounted ball valve:

Parameter	Specification
Model	Argus FK76M
Design	Trunnion-Mounted Ball Valve
Size Range	DN 65-900mm (NPS 2.5-36 in)
Pressure Class Range	PN 16-160 (ASME 150-900)
Seat Class	FCI 70-2 Class VI
Operating Temperature	Up to +1022°F (550°C)
Seat Type	Metal or Soft Seated
Fugitive Emission	ISO 15848 (API 641 on request)
Fire-Safe	API 607, ISO 10497
Standards	API 6D, ASME B16.34, PED 2014/68/EU

Why Choose Seven Star LLC for Severe-Service Ball Valve Sourcing

A trunnion-mounted ball valve rated to fire-safe and fugitive-emission standards is only as good as the seat material and cladding configuration selected for the actual process service – a metal-seated valve specified for a duty that only needed a soft seat adds unnecessary cost, while the reverse leaves a valve vulnerable in high-cycle or abrasive service. Seven Star LLC’s engineers review the process fluid, cycle frequency, and emission-compliance requirements (ISO 15848, API 641) with the customer before the FK76M is ordered, confirming seat class, special alloy needs, and fire-safe certification against the actual pipeline or refinery duty. We also help plan spare seat and seal kits given the valve’s extreme operating range, and coordinate delivery around planned pipeline and refinery turnarounds across Muscat, Sohar, and the broader GCC.

Request a Quote for Argus FK76M Trunnion Mounted Ball Valve

To submit a formal Request for Quote (RFQ), check current availability and lead time, or arrange technical consultation for the Argus FK76M Trunnion Mounted Ball Valve, please contact the instrumentation division at Seven Star LLC today. As a trusted supplier of Flowserve valve solutions in Oman and the GCC, our engineers are ready to assist with rapid sourcing for your critical shutoff valve projects.

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About brand

Flowserve is the American flow control company for pumps, valves, mechanical seals and valve automation, known through brands such as Durco, Worthington, Byron Jackson, Valtek, Limitorque, Worcester, Logix and Argus. It was formed on 22 July 1997 by the merger of equals of Durco International and BW/IP, whose heritage reaches back to Simpson & Thompson (1790) and Byron Jackson (1872). Flowserve Corporation is headquartered in Irving, Texas, and listed on the New York Stock Exchange.

Seven Star LLC sources and supplies Flowserve pumps, seals, control valves, ball valves, actuators and positioners for process plants in Oman, working from the nameplate data and the manufacturer's documentation.

Flowserve company profile

Formed	22 July 1997, merger of Durco International and BW/IP
Heritage companies	Simpson & Thompson, later Worthington Simpson (1790); Byron Jackson (1872); Duriron foundry, later Durco (1912)
Headquarters	Irving, Texas, USA
Ownership	Flowserve Corporation, public company (NYSE: FLS)
Product families	API and ANSI process pumps, Durco and Worcester ball and plug valves, Durco TX3 triple-offset and Valtek butterfly and globe control valves, Limitorque electric actuators, Logix positioners, mechanical seals

Milestones

1790: Thomas Simpson founds Simpson & Thompson, a predecessor of Worthington Simpson pumps.
1872: Byron Jackson is founded, a root of BW/IP.
1912: The Duriron foundry, later Durco, is launched.
1997: Durco International and BW/IP merge on 22 July to form Flowserve, listed on the NYSE as FLS.

Flowserve product families listed here

Flowserve pumps on this page are the Durco Mark 3 ANSI process pump and the ECPJ vertical sump pump built to API 610 type VS4. Sealing products are the ISC2 cartridge mechanical seal to API 682 and DuraClear barrier fluid for dual seal systems. Flowserve valves include the Valtek Mark One globe control valve, Argus floating and trunnion-mounted ball valves (EK71, FK79, FK76M) and Durco Microfinish ball valves. Automation is covered by Limitorque MX and L120 multi-turn electric actuators, the Rotadisk RD and RDF pneumatic actuator and the Logix 3800 digital positioner.

Where Flowserve equipment is used

Mark 3 pumps handle acids, caustic, solvents and utilities in chemical and petrochemical units. VS4 sump pumps drain pits and collection tanks. Valtek control valves and Argus ball valves are found in refining, gas processing, power and desalination, and Limitorque actuators operate gate and globe valves on pipelines, tank farms and water networks across the GCC.

Flowserve products we list

Family	Examples
Ball Valves	Argus EK71 End-Entry Floating Ball Valve, Argus FK76M Trunnion Mounted Ball Valve, Argus FK79 Floating Ball Valve, Durco Microfinish Ball Valves, Worcester Series 44 Three-Piece Ball Valve
Pumps	DS-4614-5-F DuraClear Barrier Fluid, Durco Mark 3 ANSI Process Pump, ECPJ 25-200-R API 610 VS4 Vertical Sump Pump, ISC2 API 682 Cartridge Mechanical Seal
Control Valves	Valtek Mark 100 Ultra-Capacity Globe Control, Valtek MaxFlo 4 Eccentric Rotary Plug Control, Valtek Valdisk High-Performance Butterfly, Valtek Mark One Globe Control Valve
Valve Actuators	Limitorque L120 Multi-Turn Electric Actuator, Rotadisk RD and RDF Pneumatic Actuator, Limitorque MX Multi-Turn Actuator
Butterfly Valves	Durco TX3 Triple Offset Butterfly Valve
Valve Positioners	Logix 3800 Digital Positioner

Ordering Flowserve parts: what we need

The serial number on the nameplate is the key to Flowserve records for a pump, valve or actuator. Please add the following by product type:

Pumps: size and model, impeller diameter, materials, seal arrangement, and the part name and item number from the sectional drawing
Mechanical seals: seal type and size, drawing or part number, materials code, pumped fluid and flush plan
Valves: size, pressure class, body and trim materials, end connections, and the actuator and positioner model
Limitorque actuators: unit size, order and serial number, supply voltage, wiring diagram number

Facts checked against Flowserve's SEC filings and published company histories, October 2026.

Browse Flowserve products by category: Control Valves, Pumps, Valve Actuator, Valve Positioner.

FAQ

Questions about the Argus FK76M Trunnion Mounted Ball Valve

Answers from our engineering team on installation, compatibility and integration.

01What size and pressure range does the Argus FK76M cover?

It covers DN 65 to 900mm (NPS 2.5 to 36 inches), with pressure classes from PN 16 to 160, equivalent to ASME Class 150 to 900.

02What operating temperatures can the FK76M handle?

It is designed for temperatures up to +1022u00b0F (550u00b0C), meeting the highest demands on valve tightness in both process and fugitive emission service.

03Is the FK76M available in metal-seated and soft-seated versions?

Yes. It offers both metal-seated and soft-seated configurations for reliable sealing performance depending on the application.

04Is the FK76M fire-safe rated?

Yes. It is designed to be fire-safe to API 607 or ISO 10497, in addition to meeting fugitive emission standard ISO 15848.

05How do I request a quotation for Argus FK76M Trunnion Mounted Ball Valve?

Send the model number, required quantity and delivery location through the quote request form or by email to Seven Star LLC. The sales team replies with availability, lead time and commercial terms for your Oman or GCC project.