Mariani Flanged Globe Valves

The flanged end design allows for secure, leak-proof connections while ensuring easy installation and maintenance in shipboard and offshore piping systems. These valves are engineered for accurate throttling and regulation, reducing pressure drop and optimising flow efficiency. Mariani Flanged Globe Valves comply with international maritime standards and classification society approvals, guaranteeing safety and reliability for vessels, offshore platforms, and industrial marine applications.

Key Features

Key features and benefits of Mariani Flanged Globe Valves.
1

Key Features

Built from high-quality bronze, these globe valves offer outstanding corrosion resistance, ensuring durability in harsh saltwater environments. This makes them ideal for critical marine applications such as seawater cooling, ballast control, and fuel handling.
2

Key Features

The flanged end design provides a strong, leak-proof connection, reducing the risk of fluid loss and system failures. This also allows for easier installation, maintenance, and removal in shipboard and offshore piping systems.
3

Key Features

Designed for accurate throttling, these valves regulate fluid flow efficiently while minimising pressure drop. Their precision-machined sealing surfaces ensure a tight shutoff, preventing leaks and improving overall system reliability.

356 Series

These globe valves offer precise flow control, enabling efficient throttling and minimal pressure drop in demanding conditions. Their robust construction allows them to withstand high pressures and temperatures, ensuring long-term durability in harsh marine environments. The 356 Series complies with international standards and classification societies, making them a trusted choice for shipbuilders, offshore engineers, and industrial facilities requiring reliable shutoff and regulation.

Size range: DN15 - DN100 (1/2" - 4")
Connection: Flanged
Working pressure: 225psi
Material: Bronze
Applications: Potable/Waste/Sea Water, Cooling Systems, Oil, Gases, Air, Desalination
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357 & 357/1 Disc Options

The Mariani 356 Series Flanged End Globe Valves are designed for high-performance fluid control in marine and industrial environments. What sets these valves apart is the availability of two disc options—the 357 (Conical Disc) and the 357/1 (Needle Disc)—each catering to different operational needs. Both configurations provide precise flow control, durability, and compliance with international maritime standards, ensuring reliability in demanding conditions.

357 (Conical Disc) – Designed for On/Off Control & General Throttling

The 357 Conical Disc is ideal for applications where effective shutoff and moderate throttling are required. The conical shape allows for a gradual flow restriction, reducing turbulence and minimising pressure loss. This design is particularly effective in seawater, fuel, and general fluid control systems, where a balance between flow regulation and tight shutoff is needed.

357/1 (Needle Disc) – Precision Flow Control for Critical Applications

The 357/1 Needle Disc is engineered for applications requiring high-precision throttling and flow metering. The needle-like shape allows for fine adjustments, making it ideal for low-flow and high-accuracy control applications, such as steam regulation or fuel metering systems. The design ensures a gradual, controlled increase or decrease in flow, preventing pressure spikes and enhancing operational stability.

Marine Services

General Marine services can include work for a number of various applications including Fire Protections Sprinkler Systems, Wastewater, Potable Water, Cooling & Ballast, HVAC, Ship Side Valves and Ballast Systems. Our marine valves are produced with the highest quality materials, ensuring durability and longevity.

358 Series

The Mariani Flanged End 358 Series Globe Valves are engineered for high-performance flow control in demanding marine and industrial applications. Designed to regulate fluid flow with precision, these valves are ideal for seawater, fuel, steam, and other critical fluids onboard ships, offshore platforms, and industrial plants. Built with marine-grade materials such as bronze and stainless steel, they offer superior resistance to corrosion, ensuring longevity even in the harshest environments.

Size range: DN15 - DN100 (1/2" - 2")
Connection: Flanged
Working pressure: 350psi
Material: Bronze
Applications: Potable/Waste/Sea Water, Cooling Systems, Oil, Gases, Air, Desalination
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359 Series

The Mariani Flanged End 359 Series Globe Valves are engineered for high-performance fluid control in demanding marine and offshore environments. Designed with robust construction and precision-machined components, these valves ensure reliable operation in seawater, fuel, ballast, and steam applications. Their flanged end connection provides a secure and leak-resistant fit, making them ideal for larger pipeline systems where durability and ease of maintenance are crucial.

Size range: DN15 - DN80 (1/2" - 3")
Connection: Flanged
Working pressure: 350psi
Material: Bronze
Applications: Potable/Waste/Sea Water, Cooling Systems, Oil, Gases, Air, Desalination
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Datasheets

  • Document
Datasheets

356 / 357 Datasheet
  • Document
Datasheets

358 Datasheet
  • Document
Datasheets

359 Datasheet

Frequently Asked Questions

Mariani Marine Globe Valves are typically made from corrosion-resistant materials like bronze, stainless steel, and other marine-grade alloys. These materials ensure durability and long service life in harsh saltwater environments.

These valves are primarily used in the marine, shipbuilding, and offshore industries. They are essential for applications such as seawater cooling, ballast systems, fuel handling, and other critical fluid control processes.

Globe valves offer precise flow control and excellent sealing capabilities, making them ideal for regulating fluid flow in marine systems. Their design minimises leakage and ensures efficient performance in high-pressure environments.

Yes, these valves are available with flanged, threaded, and welded end connections. This flexibility allows for seamless integration into various piping systems on ships and offshore platforms.

Yes, these valves are designed to withstand extreme temperatures, making them suitable for steam, hot water, and other high-temperature applications in marine settings.

Yes, they are manufactured to meet international maritime regulations and standards, including those set by classification societies such as ABS, DNV, and Lloyd’s Register.

These valves come in a range of sizes, typically from DN15 (1/2") to DN300 (12"), to accommodate different flow requirements in marine applications.

They feature precision-machined sealing surfaces and high-quality seats, ensuring tight shutoff and minimal leakage, even under high-pressure conditions.

Yes, their design allows for precise throttling and regulation of fluid flow, making them ideal for controlling flow rates in shipboard systems.

Regular inspection, cleaning, and lubrication of moving parts are recommended to maintain optimal performance. Periodic checks on the sealing surfaces and packing are also essential for longevity.

Yes, Mariani Marine Globe Valves can be fitted with electric or pneumatic actuators for remote operation, improving efficiency and control in marine systems.

They can be sourced from specialised marine valve suppliers, shipbuilding contractors, and authorised distributors who cater to offshore and maritime industries.

FAQ

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Mariani Marine Flanged Globe Valves