Mariani Bronze Free Flow Valves are designed for seamless fluid movement with minimal resistance, ensuring optimal efficiency in steam, water, oil, and gas applications. Built from high-quality bronze for superior corrosion resistance, these valves provide long-lasting durability and reliable performance in demanding industrial environments.

Key features and benefits of Mariani 364 Free Flow Valves.

Key Features

Engineered to minimise resistance, Mariani Bronze Free Flow Valves allow for smooth and uninterrupted fluid movement. This design optimises system efficiency, reducing turbulence and ensuring consistent flow in applications such as steam, water, oil, and gas.

Key Features

Manufactured from high-quality bronze, these valves offer exceptional corrosion resistance, making them ideal for harsh environments, including marine and industrial applications. Their robust build ensures long-term performance, reducing maintenance and replacement costs.

Key Features

Designed to maintain efficient operation, these valves minimise pressure loss across the system. By allowing fluids to pass through with minimal restriction, they help reduce energy consumption and wear on pumps and other system components, extending the lifespan of critical equipment.

1. Body

Bronze ASTM B62.

2. Integral Seat

Bronze ASTM B62.

3. Disc

P.T.F.E. for smooth and reliable operation.

4. Packing

Fiber for secure sealing and leak prevention

5. Bonnet

Brass ASTM B283 for enhanced durability.

6. Stem

Brass ASTM B16, ensuring robust performance.

7. Nut

Zinc-Plated Steel for corrosion resistance.

8. Handwheel

Lacquered Steel for strong grip and easy operation.

9. Gland Nut

Brass ASTM B16 for secure stem sealing.

10. Thrust Washer

Brass ASTM B16 for reduced friction and extended lifespan.

11. Stem Packing

High-quality material for optimal sealing.

Superior Corrosion Resistance – Made from Bronze ASTM B62, these valves withstand harsh marine environments, including exposure to seawater and salt-laden air, preventing premature wear and degradation.

Reliable Performance in High-Moisture Conditions – Featuring P.T.F.E. disc and fiber packing, these valves maintain a tight seal and smooth operation, even in constantly humid and high-pressure marine systems.

Durability for Critical Marine Systems – With brass and lacquered steel components, these valves offer long-term reliability in shipbuilding, ballast control, cooling systems, and offshore platforms, reducing maintenance needs.

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.

What is a Free Flow Valve?

A Free Flow Valve is designed to allow fluid to move through with minimal resistance, reducing pressure drop and maintaining efficient flow in steam, water, oil, and gas systems.

What are Mariani Bronze Free Flow Valves used for?

These valves are ideal for industrial applications that require smooth, unrestricted fluid movement, such as marine, oil & gas, power generation, and HVAC systems.

Why is bronze used for these valves?

Bronze ASTM B62 offers excellent corrosion resistance, making it perfect for marine and high-moisture environments. It also ensures durability and long-term reliability.

How do Free Flow Valves differ from other valve types?

Unlike gate or globe valves that regulate flow, Free Flow Valves minimise restrictions, allowing fluid to pass through more smoothly, reducing turbulence and energy loss.

Are Mariani Free Flow Valves suitable for seawater applications?

Yes! Thanks to their bronze construction, these valves resist corrosion from saltwater, making them an excellent choice for marine and offshore industries.

What connection types are available?

Mariani Bronze Free Flow Valves are available in threaded and flanged options, allowing for easy installation across different piping systems.

Can these valves be used for high-pressure systems?

Yes, but pressure ratings depend on the valve size and application. Always check specifications or consult an expert to ensure compatibility.

How do I maintain a Free Flow Valve?

Regular inspection for leaks, checking seals and components, and cleaning the internal parts will help ensure longevity and optimal performance.

Are these valves suitable for potable water applications?

Yes, bronze is commonly used in potable water systems. However, always confirm compliance with specific industry and regional regulations.

Do Free Flow Valves require frequent maintenance?

No, they are designed for minimal maintenance, thanks to P.T.F.E. discs and fiber packing, which provide smooth operation and long-term durability.

What industries use Free Flow Valves the most?

Industries such as marine, oil & gas, steam & power generation, water treatment, HVAC, and chemical processing commonly use these valves for their efficiency and reliability.

Where can I buy Mariani Bronze Free Flow Valves?

You can purchase Mariani Bronze Free Flow Valves from our website with fast shipping and expert support.

Please feel free to request information and advice using the form below or call us on 0151 547 1221