Typical circuits
- Chilled-water supply and return
- Hot-water and heat-recovery circuits
- Glycol circuits
- Heat-exchanger and cooling-equipment branches
SOLUTION · FLOW CONTROL
Data center cooling flow control
Use GRUNER valves and actuators for project-specific control of chilled water, hot water, glycol and heat-exchange circuits.
DIRECT ANSWER
What problem does this solution address?
Media, size, pressure, torque, shut-off and control method jointly determine valve and actuator configuration. This solution turns those inputs into a reviewable equipment scope and controls interface instead of selecting by nominal size alone.
APPLICABILITY
Applicable facilities and project stages
For project-specific review of two-way butterfly valves and electric actuators in cooling circuits.
Project stages
- Equipment selection and detailed design
- New-build controls design
- Expansion and valve replacement
- Existing-circuit performance investigation
SYSTEM & BOUNDARY
System composition and project boundaries
Available material covers V2..ABV butterfly valves and 910, 920 and 930U actuator ranges.
V2..ABV butterfly valve
Material lists DN50–800 and PN16; media and materials still require exact-model and project-condition review.
Electric actuator
910, 920 and 930U cover different torque, running-time, control and communication configurations.
Control and feedback
Power, control signal, position feedback, fault indication and optional bus capabilities require version confirmation.
Project boundary
Boundary principle
This page does not replace hydraulic calculation, valve-authority analysis, control logic, equipment interlocks or mechanical design. IP, explosion protection, over-torque protection and Modbus / Profibus / HART depend on selected range and configuration.
DELIVERY
Implementation process and deliverables
Start from design conditions and control objectives, not from a single product code.
Capture operating conditions
Confirm media, temperature, design flow, differential pressure, size, pressure class, installation and environment.
Operating-condition sheetPipe and equipment scheduleOpen-condition list
Match valve and actuator
Use valve torque, shut-off, running time, power and control method to frame a configuration.
Selection scheduleActuator match scheduleControl and feedback I/O list
Coordinate controls and verify
Check BMS, power, panel and installation interfaces and execute functional verification using the project method.
Interface matrixFunctional test recordHandover and maintenance information
INTERFACES
Interfaces with other systems
Control authority, fail position and feedback points must align with mechanical operating strategy.
BMS / controller
Binary, analog or bus control and position, fault and status feedback depend on the actuator version.
Equipment and interlocks
Pump, chiller, heat exchanger and terminal-unit sequencing and protection belong to mechanical and controls design.
Power and panels
Voltage, consumption, circuit protection, terminals and cabling must match final actuator configuration and electrical design.
EVIDENCE
Verifiable product and manufacturing evidence
GRUNER material supports product range, manufacturing footprint and display of IATF 16949, ISO 9001 and EMAS documents. Current project names lack scope, quantity and results, so they are not presented as KIRIAST case studies.
View GRUNER capability and certificatesFAQ
Frequently asked questions
Is nominal pipe size enough to select a valve?
No. Confirm media, temperature, flow, differential pressure, pressure class, shut-off, environment, control objective and maintainability.
Do all actuators support Modbus, Profibus or HART?
No such assumption should be made. Protocol, IP, explosion protection and protective functions depend on exact range, version and configuration.
Will KIRIAST provide hydraulic calculations?
The website does not promise unconfirmed professional scope. Consultation must identify whether the consultant, mechanical designer, equipment party or another responsible party performs and reviews calculations.
Last updated28 July 2026
Review note
This page frames solution scope and does not replace professional fire, mechanical, controls or IT design. Project configuration must be confirmed by appropriately qualified teams using current manufacturer documentation.
Project enquiry
Start with operating conditions.
Share media, temperature, flow, differential pressure, size, pressure class, power and control requirements.