Thermal Oil Valves

Thermal oil valves are specifically designed for use in high-temperature heat transfer systems where stable flow control and long-term reliability are essential. Commonly found in industrial heating circuits, power generation plants, and process applications, these valves operate with thermal fluids that transfer heat without the high pressures associated with steam systems.

Isolating Valves

FABA+ Figure 35.040 Bellows Sealed Globe Valve
The FABA+ Figure 35.040 is a high-integrity bellows sealed globe valve designed for reliable shut-off duties in demanding industrial applications. The valve features a robust cast steel body rated PN40, ensuring excellent pressure resistance and long service life. A bellows sealing system provides a hermetic seal to the atmosphere, eliminating stem leakage and enhancing operational safety, particularly in hazardous or high-temperature media.

The valve is equipped with butt-weld end connections for secure, leak-free installation in welded piping systems. A standard isolating plug ensures dependable tight shut-off performance, while handwheel operation allows precise manual control. The FABA+ 35.040 is suitable for steam, thermal oil, gases, and other industrial fluids where safety, durability, and maintenance-free operation are critical.

FABA+ Figure 35.066 Y-Pattern Bellows Sealed Globe Valve
The FABA+ Figure 35.066 Y-pattern bellows sealed globe valve is designed for safe and efficient isolation in high-pressure industrial piping systems. The Y-pattern body design minimizes pressure loss while maintaining excellent flow characteristics, making it suitable for continuous operation in demanding service conditions.

Manufactured with a robust cast steel body and rated PN40, the valve offers high mechanical strength and long-term reliability. The integrated bellows sealing system provides a hermetic stem seal, effectively preventing external leakage and ensuring maximum operational safety. Butt-weld end connections allow for secure, permanent installation in welded pipelines.

Thermal Oil? Choose ARI

ARI valves are engineered to deliver reliable performance and tight shut-off in high-temperature thermal oil systems where consistent heat transfer and long service life are critical.

Control Valves

Stevi® Pro Figure 35.471…4 Bellows Sealed Globe Control Valve
The Stevi® Pro Figure 35.471…4 bellows sealed globe control valve is engineered for precise and reliable control of industrial process media under demanding operating conditions. The robust cast steel body, rated PN40, ensures high pressure resistance and long-term durability in high-performance control applications.

A high-integrity bellows sealing system provides a hermetic stem seal, preventing external leakage and enhancing safety when handling hazardous, high-temperature, or environmentally sensitive media. The valve is equipped with butt-weld end connections for secure, leak-free installation in welded piping systems.

The parabolic equal-percentage control plug delivers accurate, stable flow regulation across a wide operating range, making the valve suitable for throttling and modulating service. The Stevi® Pro 35.471…4 is available with either pneumatic or electric actuators, allowing flexible integration into automated control systems.

Key features:

  • Bellows sealed globe control valve

  • Parabolic equal-percentage control plug

  • Precise modulating control performance

  • Available with pneumatic or electric actuators

  • High operational safety and reliability

Strainers

ARI Y-Type Strainer – Figure 35.080
The ARI Figure 35.080 Y-type strainer is designed to provide effective mechanical protection for downstream valves, control equipment, and piping systems by removing solid particles from flowing media. The Y-pattern design allows efficient filtration with reduced pressure drop and facilitates easy maintenance access.

Manufactured with a robust cast steel body and rated PN40, the strainer is suitable for high-pressure and high-temperature industrial applications. Butt-weld end connections ensure a secure, leak-free installation in welded pipeline systems. The strainer is fitted with a durable stainless steel screen with standard mesh size, offering reliable particle retention and long service life across a wide range of operating conditions.

The ARI Y-type strainer Figure 35.080 is ideal for use with steam, gases, liquids, and thermal oil where dependable filtration and equipment protection are essential.

Key features:

  • Y-type strainer

  • Cast steel body

  • Pressure rating: PN40

  • Butt-weld connections

  • Stainless steel screen

Check Valves

ARI-CHECKO-V Lift Pattern Check Valve – Figure 35.030
The ARI-CHECKO-V Figure 35.030 lift pattern check valve is designed to prevent reverse flow in high-pressure industrial piping systems, ensuring safe and reliable operation of process equipment. The lift-type design with a spring-loaded disc provides fast response and positive closing, minimising the risk of backflow and system damage.

Constructed with a robust cast steel body and rated PN40, the valve offers excellent mechanical strength and durability for demanding service conditions. The metal-seated design ensures dependable sealing performance at elevated temperatures and pressures. Butt-weld end connections allow secure, leak-free installation in welded pipelines.

The ARI-CHECKO-V lift pattern check valve is suitable for steam, gases, liquids, and thermal oil applications where reliable non-return protection is essential.

ARI-CHECKO-V Y-Pattern Lift Check Valve – Figure 35.063
The ARI-CHECKO-V Figure 35.063 Y-pattern lift check valve is designed to provide reliable protection against reverse flow in high-pressure industrial piping systems. The Y-pattern body design offers improved flow characteristics and reduced pressure loss compared to conventional straight-pattern designs, making it suitable for continuous operation.

The lift-type construction with a spring-loaded disc ensures rapid and controlled closing, minimising pressure surges and preventing backflow. A durable metal-seated design provides dependable sealing performance at elevated temperatures and pressures. The robust cast steel body, rated PN40, delivers excellent mechanical strength and long service life in demanding applications.

Frequently Asked Questions

Thermal oil valves are used to control and isolate heat transfer fluids in high-temperature systems such as heaters, heat exchangers, reactors, and energy recovery units.

Thermal oil is often used instead of steam because it allows high-temperature heat transfer at much lower pressures, making systems safer, simpler, and more efficient to operate.

Ball valves are commonly used for isolation, globe valves for flow regulation, and butterfly valves for larger pipe diameters.

Carbon steel, alloy steel, and stainless steel are typically used due to their strength and resistance to high operating temperatures.

No, thermal oil systems require valves specifically designed for high temperatures, with appropriate sealing and materials to prevent leakage and degradation.

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Depending on design and materials, thermal oil valves can typically operate at temperatures exceeding 300°C.

Yes, high-temperature seats and packing are required to maintain sealing performance under continuous heat exposure.

Many thermal oil valves are supplied with fire-safe designs to ensure sealing integrity during extreme temperature or fire conditions.

Yes, thermal oil valves can be supplied actuator-ready or fully actuated for automated control and system integration.

They are engineered to accommodate expansion and contraction without compromising sealing or operational reliability.

They are widely used in chemical processing, power generation, food processing, manufacturing, and renewable energy applications.

Selection depends on operating temperature, pressure, pipe size, flow control requirements, and compatibility with the specific thermal oil used.

FAQ

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Thermal Oil Valves