Reliable Flow Control for Heating, Cooling & HVAC Applications
Siemens offers a comprehensive range of valves and actuators designed for precise control and reliable operation in energy generation, distribution and consumption applications. These solutions are a key component of modern HVAC installations, Building Automation systems, Building Management Systems (BMS) and Building Energy Management Systems (BEMS). Siemens valves and actuators are widely used in air handling units (AHUs), heating and cooling networks, boiler rooms, heat pumps, chillers and numerous other applications where accurate flow and temperature control are essential.
Designed for Performance, Reliability & Easy Installation
The latest generation of Siemens valves and actuators delivers faster product selection, simplified system design and reduced installation time. Full compatibility with previous product generations helps protect existing investments, while the advanced design ensures safe operation and long-term reliability. Thanks to an innovative mounting concept, actuators can be installed quickly, easily and correctly, reducing labour requirements and lowering installation and maintenance costs.
Technical Specifications
- Nominal pressure ratings from 6 to 40 bar.
- Operating temperatures from -40°C to +350°C.
- Sizes from DN10 to DN600.
- Kvs values from 0.025 to 29,300 m³/h.
- Suitable for differential pressures up to 16 bar.
- Closing pressures up to 40 bar.
- Actuators with or without spring return.
- Operating times from 2 to 180 seconds.
Applications
Siemens valves are suitable for controlling:
- Chilled water.
- Hot water.
- Steam.
- Oil.
- Water-glycol mixtures.
- Refrigerants.
- Deionised water and other specialised media.
With high control accuracy, long service life and seamless integration into building automation systems, Siemens valves and actuators are an ideal solution for modern HVAC installations, energy management projects and facility management applications.
Siemens Valve and Actuator Categories:
Siemens offers a comprehensive portfolio of valves and actuators for HVAC, Building Automation, BMS and energy management applications. These solutions are designed to meet the requirements of heating, cooling, air conditioning and energy distribution systems, delivering precise control, long-term reliability and high operational efficiency.
Siemens electrohydraulic actuators and globe valves are ideally suited for central plant control and high-capacity energy distribution applications. The range includes actuators with 20 mm and 40 mm stroke lengths, together with a wide selection of threaded and flanged valves to accommodate various system requirements.
Featuring robust construction, high actuating force and optional spring-return functionality, these solutions provide dependable operation even in the most demanding HVAC environments.
Siemens electromechanical actuators and globe valves offer a cost-effective and proven solution for a wide range of HVAC applications. With millions of valve-actuator combinations installed worldwide, they are recognised for their reliability, performance and ease of operation.
They are ideal for:
- Heating systems.
- Cooling systems.
- Air conditioning applications.
- Commercial buildings.
- Hospitality and industrial facilities.
Siemens ball valves are designed for heating and cooling applications requiring accurate flow control, durability and reliable performance.
Key features include:
- Medium temperatures from -10°C to +120°C.
- Sizes ranging from DN15 to DN50.
- PN40 nominal pressure rating.
- Chrome-plated ball design for extended service life.
- Reduced actuator torque requirements.
- Tight shut-off performance up to 14 bar differential pressure.
- Quick and simple actuator mounting.
Available actuators operate on 230 VAC or 24 VAC and can be supplied with auxiliary switches and spring-return functionality, providing maximum flexibility for building automation and energy management applications.
Optimised Hydraulic Performance for HVAC Systems
Siemens Combi pressure independent and constant flow balancing valves are designed to simplify the design and operation of heating, cooling and air conditioning (HVAC) networks. They maintain a constant flow rate regardless of pressure fluctuations within the system, helping improve overall efficiency and reduce energy consumption.
By eliminating common over-flow and under-flow issues, Combi valves ensure accurate flow control throughout the installation. This results in a greater temperature differential between supply and return water, improving the efficiency of chillers, boilers and heat pumps while reducing operating costs.
Simple Commissioning and Improved Energy Efficiency
Siemens balancing valves can be combined with a wide range of actuators, including the cost-effective Siemens STA thermal actuators, providing flexibility for HVAC, Building Automation and Building Management System (BMS) applications.
Their key advantage is ease of adjustment:
Simply set the required flow rate for each valve and the system automatically maintains the correct hydraulic balance.
Key Benefits
- Constant flow independent of pressure variations.
- Elimination of over-flow and under-flow conditions.
- Improved system energy efficiency.
- Enhanced performance of boilers, chillers and heat pumps.
- Faster system design and commissioning.
- Compatible with Siemens thermal and electromechanical actuators.
- Quick and easy adjustment.
Siemens pressure independent control valves provide an ideal solution for modern HVAC installations requiring accurate flow control, hydraulic balancing and energy-efficient operation.
Reliable Flow Control for HVAC & Building Automation Systems
Siemens rotary actuators and rotary control valves provide a reliable and energy-efficient solution for heating, cooling and HVAC applications. Designed for small and medium-sized installations, they deliver accurate flow control, low pressure loss and dependable long-term performance.
Siemens butterfly valves are suitable for both open and closed hydraulic circuits, ensuring safe operation and excellent shut-off performance in demanding energy management and building automation applications.
The direct connection between valve and actuator simplifies installation, reduces commissioning time and enhances overall system reliability.
Key Features
- Ideal for HVAC and Building Automation applications.
- Low pressure loss and improved energy efficiency.
- Butterfly valves for open and closed circuits.
- Direct valve-to-actuator mounting.
- High reliability and long service life.
- Tight shut-off performance for rotary valves up to DN600.
- Suitable for BMS and BEMS integration.
- Ideal for office buildings, hotels, hospitals and industrial facilities.
Siemens rotary actuators and control valves integrate seamlessly with modern Building Management Systems (BMS), Building Energy Management Systems (BEMS) and KNX Building Automation solutions, helping optimise building performance and energy efficiency.
Siemens small valves and actuators provide reliable and energy-efficient zone and room control for heating, cooling and air conditioning (HVAC) systems. They are ideal for individual heating zones, fan coil units and temperature control applications in homes, hotels, offices and commercial buildings.
Zone & Room Control Applications
Siemens solutions are suitable for:
- Independent heating and cooling zones.
- Individual room heating control.
- Reheating applications.
- Fan coil systems.
- Chilled ceilings.
- Radiator heating.
- Underfloor heating systems.
The extensive portfolio includes low-noise electromechanical, electrothermal and thermostatic actuators designed for dependable operation, efficient room control and reduced energy consumption.
Two-way and three-way globe valves, as well as ball valves, are available to meet different flow-control and installation requirements. Siemens small valves and actuators can be integrated into modern Building Automation, Building Management Systems (BMS) and Building Energy Management Systems (BEMS), helping improve occupant comfort and overall building energy efficiency.
Intelligent Temperature Control for Comfort & Energy Efficiency
Siemens thermostatic radiator valves, control valves and actuators provide precise temperature control for heating and cooling applications, helping improve occupant comfort while significantly reducing energy consumption.
They are ideal for applications including:
- Radiator heating systems.
- Fan coil units (FCUs.
- Chilled ceiling systems.
- Underfloor heating systems.
- Individual heating control systems.
- Zoned temperature control applications.
Siemens thermostatic heads feature high-precision liquid-filled sensing elements that respond quickly to changes in room temperature. This enables accurate temperature regulation and improved energy efficiency across heating and cooling systems.
Reliable Performance & Hydraulic Balancing
Siemens thermostatic valves and actuators offer:
- Robust and durable construction.
- Quiet operation.
- Maintenance-free performance.
- Long service life.
- Easy installation and commissioning.
Siemens thermostatic heads, MCV control valves and actuators help regulate both flow and room temperature more effectively. This reduces thermal losses, improves hydraulic system performance and ensures more consistent, efficient heating and cooling throughout the building.
Energy Efficiency, Comfort & Accurate Flow Regulation
Siemens modulating magnetic valves provide exceptionally fast and precise flow control for demanding domestic hot water, heating, air conditioning, steam and industrial applications. They are particularly suitable for installations requiring high energy efficiency, stable temperature control and exceptional accuracy, including cleanrooms, pharmaceutical facilities and critical HVAC environments.
Certified versions are also available for potable water applications.
Key Features
- Opening time of less than 2 seconds.
- Control range of up to 1:1000.
- 0–10 V DC control signal.
- Highly accurate flow control, even with very small control deviations.
- Suitable for applications requiring temperature accuracy below 0.1°C.
- Improved control-loop stability and easier commissioning.
- Reduced impact of valve oversizing.
- High performance in Building Automation and BMS applications.
Their rapid response and precise modulation help maintain stable temperatures while optimising energy consumption. Siemens magnetic valves are therefore an ideal solution for applications where control accuracy, reliability and energy efficiency are essential.
High-Precision Control for Refrigeration & Air Conditioning Systems
Siemens refrigeration valves with modulating magnetic actuators are designed for applications requiring exceptionally precise flow and cooling capacity control. They provide an ideal solution for refrigeration plants, chillers, precision air conditioning systems and Building Automation applications where temperature stability and energy efficiency are critical.
These valves are suitable for:
- Refrigeration systems and water chillers.
- Chiller capacity control applications.
- Precision air-conditioned environments.
- High-accuracy temperature control systems.
- HVAC and Building Management Systems (BMS).
Key Features
- 100% hermetically sealed design.
- Extremely fast response time.
- High-precision modulating control.
- Reliable operation under demanding conditions.
- Improved energy efficiency.
- Accurate cooling capacity and flow control.
Their fast response and precise modulation enable refrigeration systems to operate more efficiently, reducing energy consumption while maintaining stable operating conditions and optimal cooling performance in critical HVAC and industrial applications.