Siemens Valves

Control and isolation valves for HVAC and building automation. Precise flow and temperature control with Siemens electric and electro-hydraulic actuators.

Siemens valves for plant control

Siemens valves are the industry benchmark for building automation and HVAC control. Designed for precise regulation of hot water, chilled water, glycol and steam, they are used in central plants, district heating substations, air handling units (AHU), fan coils and zone systems.

Every Siemens valve is engineered to pair seamlessly with Siemens actuators from the same family, ensuring mechanical compatibility, optimal performance and easy installation. The Siemens valve-actuator system is designed for integration with modern Building Management Systems (BMS), supporting protocols such as BACnet, Modbus and KNX.

Roffia distributes the complete range of Siemens valves and actuators for HVAC applications, with in-stock availability from our Cremona, Italy warehouse and fast delivery throughout Italy and Europe.

Siemens valves for HVAC and building automation — Roffia srl

Motorised ball valves

  • VAI61, VBI61 series
  • DN 15–50, PN 16/PN 25
  • On-off isolation and zone switching
  • Stroke time 10–15 seconds
  • Tight bi-directional shut-off
  • Ideal for fan coils and terminal circuits

Globe valves

  • VVF, VXF, VVG series — 2 and 3 way
  • DN 15–150, PN 6/PN 16/PN 25
  • Precise modulating control
  • Linear or equal-percentage characteristic
  • For heat exchangers, AHUs, central plants
  • Kvs from 0.25 to 250 m³/h

Butterfly and mixing valves

  • VKF series — wafer and lug
  • DN 50–300 for high flow rates
  • 3-way mixing valves
  • For district heating and zone plants
  • Ductile iron body
  • Temperature up to 200 °C

Electric actuators

  • SAS series — rotary actuators for ball and butterfly valves
  • SSP series — linear actuators for small globe valves
  • On-off, 3-point or modulating control (0-10 V, 4-20 mA)
  • 24 V AC or 230 V AC supply
  • IP54 protection standard
  • Optional BACnet, Modbus, KNX communication

Electro-hydraulic actuators

  • SKB, SKC series — high closing force
  • For large globe valves (up to DN 150)
  • Silent, vibration-free operation
  • Ideal for district heating substations
  • 20 or 40 mm stroke
  • Force up to 2800 N

Typical applications

Central heating and cooling plants

Siemens 2-way and 3-way globe valves for modulating temperature control on heat exchangers, boilers and chillers. Proportional water flow control to maintain temperature set-point with maximum energy efficiency.

District heating and cooling

High differential pressure globe valves with electro-hydraulic actuators for building substations connected to district heating networks. Temperature up to 200 °C, ΔP up to 600 kPa. Perfect for plate heat exchanger control in residential substations.

Air handling units (AHU)

Globe and butterfly valves for pre-heat, heating and cooling coil control in AHUs. Direct integration with Siemens DDC controllers and BMS for indoor comfort in commercial buildings, hospitals and industrial facilities.

Fan coils and zone systems

Motorised ball valves for on-off switching of individual circuits in fan coil or radiant systems. Fast stroke time, low power consumption, silent operation. Zone management via room thermostats or centralised BMS.

Siemens valve range available

Ball valves
VAI61, VBI61, DN 15-50
2-way globe valves
VVF, VVG, DN 15-150
3-way globe valves
VXF, DN 15-150
Butterfly valves
VKF, DN 50-300
Rotary actuators
SAS, SAX
Linear actuators
SSP, SQS
Electro-hydraulic
SKB, SKC, up to 2800 N
Accessories
Fittings, adapters, mounting kits

Domande frequenti

Which Siemens valves are available from Roffia?
Roffia distributes the Siemens HVAC and building automation valve range: motorised ball valves (VAI61, VBI61 series), globe valves (VVF, VXF, VVG series), butterfly valves (VKF series), 3-way mixing valves, and zone valves. All models can be paired with Siemens electric and electro-hydraulic actuators (SAS, SAX, SKB, SKC, SSP series). In-stock availability from our Cremona warehouse for fast delivery.
How to choose the right Siemens actuator for the valve?
Actuator selection depends on: valve type (ball, globe, butterfly), required torque/force (determined by DN and differential pressure), control signal (on-off, 0-10 V, 4-20 mA, 3-point, bus communication), stroke time required, and supply voltage (24 V AC, 230 V AC). Siemens provides valve-actuator pairing tables ensuring mechanical and electrical compatibility. Roffia technical team assists you in the correct selection.
Are Siemens valves suitable for district heating?
Yes. Siemens globe valves VVF and VXF series are specifically designed for district heating and cooling: high differential pressure (up to 600 kPa), operating temperature up to 200 °C, ductile iron or steel body. SKB and SKC electro-hydraulic actuators deliver high closing forces and silent operation, ideal for building substations and thermal distribution networks.
What is the difference between Siemens globe valves and ball valves?
Globe valves offer precise modulating control with linear or equal-percentage flow characteristics — ideal for proportional temperature and flow control on heat exchangers and central plants. Motorised ball valves are better suited for on-off isolation and fast switching in zone circuits, fan coils and split systems: typical stroke time 10-15 seconds, tight bi-directional shut-off. Choose globe for fine modulation; choose ball for fast on-off.
Do Siemens valves integrate with BMS systems?
Yes. Siemens actuators support all major building automation protocols: BACnet, Modbus, KNX and LON. Bus-communicating actuators enable remote diagnostics, position feedback and direct integration with Building Management Systems (BMS) — Siemens Desigo and third-party systems. This enables real-time monitoring and energy optimisation of the entire HVAC system.

Siemens valve and actuator quotation

Tell us your system type, fluid, DN, ΔP and required control type (on-off or modulating). We'll recommend the optimal Siemens valve-actuator pairing with a quotation within 24 hours.

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