3-way control and shut-off valves

3-Way Control and Shut-Off Valves - Versatile Solutions for Hydraulic Systems

3-way control and shut-off valves are key elements of modern installations.   They enable precise control of the flow of liquids and gases. They are used in many industrial sectors. We often come across questions about the selection of these valves. That is why we have prepared a comprehensive review of this product category. Our team has many years of experience in advising customers. We are happy to share this knowledge.

Onninen's offer includes valves from renowned manufacturers. These include Afriso, Honeywell Home and Imi Heimeier. Each of these brands has unique technological solutions. They guarantee the reliability and precision of the valves. We recently used Afriso valves in a project for a large production plant. They have proven themselves in a demanding industrial environment.

Types of 3-way valves - control and shut-off

Our offer includes a wide selection of 3-way valves. Regulating and shut-off models are available.   Control valves enable smooth control of the medium flow.   They are used in heating and cooling systems. Shut-off valves, on the other hand, are used to close or open the flow. They are often used in industrial installations.

The most popular types of 3-way valves in our offer are:

• 3-Way Zone Valves
• 3-way split valves
• 3-way changeover valves

Each of these types has its own unique features and applications. Zone valves work well in underfloor heating systems. Split valves are often installed in solar installations. Switching valves are used in systems with solid fuel boilers.

Selection criteria for 3-way control and shut-off valves

Choosing the right 3-way valve is a key issue. It affects the efficiency and safety of the entire system.   In our daily practice we see how important an individual approach is.   Every installation has its own unique requirements. That is why we consider many factors when selecting a valve.

The most important criteria for selecting 3-way valves are:

• Type of medium (water, glycol, oil, etc.)
• Working temperature and pressure
• Required bandwidth
• Control method (manual, electric, pneumatic)
• Material of construction (brass, stainless steel)

In our experience, it is worth paying attention to the Kvs coefficient. It determines the valve capacity. The higher the Kvs, the greater the possible flow. For heating systems, we often recommend valves with a Kvs in the range of 6-10 m³/h. In the case of industrial installations, higher values may be required.

Many customers ask us about the differences between control and shut-off valves. Control valves allow for a smooth change of flow. They are used where precise control is needed. Shut-off valves have a simpler design. They are used to close or open the flow.

Practical applications of 3-way valves in various industries

3-way control and shut-off valves are widely used in industry.   In heating systems, they are often used to mix water. This allows the supply temperature to be maintained at a constant level. In cooling, 3-way valves regulate the flow of the refrigerant. This ensures optimum system efficiency.

In the case of reorganization of production lines, we most often use switching valves. They allow for a quick change of the flow direction of the medium. This is especially useful in processes requiring frequent switching. We recently installed such a system in a cosmetics factory. This allowed for a significant increase in production flexibility.

3-way dividing valves are often used in solar systems. They enable efficient management of solar energy. When the temperature in the collectors is high enough, the valve directs the medium to the storage tank. Otherwise, the medium returns to the collectors. This solution maximizes the use of renewable energy.

In the food industry, hygiene is key. That is why we recommend stainless steel valves there. They are corrosion-resistant and easy to clean. We recently equipped a dairy production line with such valves. The customer appreciated their reliability and ease of maintenance.

Onninen recommends the use of 3-way valves in building automation systems.   They enable effective management of heating and cooling. In intelligent buildings, these valves often work with temperature sensors. This allows for automatic adjustment of parameters to changing conditions. Such solutions significantly increase user comfort and energy efficiency.

In fire protection systems, 3-way valves play a key role. They enable quick redirection of water to extinguishing systems. In emergency situations, every second counts. That is why we rely on reliable products from renowned brands. Honeywell Home valves have proven themselves in many critical applications.

The pharmaceutical industry places special demands on fittings. Valves must be resistant to aggressive chemicals. We often recommend models with PTFE seals. They are extremely durable and resistant to most substances. In one of the projects for a pharmaceutical company, we used Imi Heimeier valves. They met strict industry standards.

At Onninen we offer comprehensive support in selecting valves. Our specialists will help you analyse your system requirements. They will advise you on the optimal technical solution. We also provide full after-sales support. This includes training in operation and warranty service. Please contact our technical department. We will help you select the perfect valve for your application.