AG & BG Series Solenoid Valves for Data Center Cooling
Gems Sensors AG and BG Series miniature solenoid valves are compact, continuous-duty valves used in data center and server cooling loops where OEMs need coolant-compatible fluid control with strong flow in a small footprint. With MOPD up to 1000 PSI and Cv as high as 0.43, they support high-pressure, high-flow server cooling designs and leave room for redundant valve paths that protect uptime.
Compact High-Flow Valves for Data Center Cooling
Modern data centers pack dense compute into rows of servers that generate substantial heat. To keep equipment in an optimal operating band, between 64°F and 81°F, cooling systems must move coolant reliably through tight mechanical envelopes.
For cooling OEMs and system designers, the valve problem is rarely “any valve will do.” The requirement is a compact yet high-flow solenoid valve that is compatible with coolant fluids, supports the pressure differential of the loop, and can stay energized for long periods without duty-cycle limitations.
The Challenge for Server Cooling Valves
Finding a compact yet high-flow solenoid valve that is compatible with coolant fluids, while still meeting server cooling pressure and flow targets and enabling redundant architectures in limited space.
Gems
AG and BG Series solenoid valves
Gems AG Series and BG Series solenoid valves are miniature valves built for applications that need power in a small package.
- Maximum Operating Pressure Differential (MOPD) up to 1000 PSI
- Flow coefficient (Cv) as high as 0.43 for server cooling valve requirements
- Compact body that helps OEMs design in redundancy for data center cooling uptime
- Continuous-duty rating so valves can remain energized for extended periods
That combination matters because cooling loops must hold pressure and deliver flow without consuming rack or manifold real estate that could otherwise host backup fluid paths. According to Statista, hourly downtime of critical servers can cost as much as $400,000, which is why redundancy-friendly valve packaging is a design priority, not a convenience.
Browse the broader miniature solenoid valve portfolio for related configurations.
Manifold Mount and Operator Interface Options for Tight Spaces
AG and BG Series valves can be configured with a manifold mount body so OEMs can design and install the valves into their own manifolds. Integrating into a custom manifold can reduce overall package size, lower assembly cost, and cut potential leak points by eliminating unnecessary plumbing fittings.
When size is especially constrained, Gems also offers these server cooling valves as an operator interface. In that configuration, the traditional valve body is effectively eliminated: the assembly includes the coil and internal mechanical components (plunger, plunger housing, spring), while the customer’s manifold serves as the body. Removing body turns from the flow path can free space and help improve flow rate.
Key Features of AG and BG Series Cooling Valves
- 2-way or 3-way configurations
- Encapsulated coils for moisture intrusion protection
- Bubble-tight sealing capability; designed for millions of cycles
- Configurable orifice sizes, body materials, wattages, and coil constructions
- Manifold mount and operator-interface options for OEM packaging
- Continuous-duty operation for long energized periods in cooling systems
Key Takeaways
- Data center / server cooling needs coolant-compatible solenoid valves that combine compact size with meaningful flow and pressure capability.
- AG and BG Series valves deliver up to 1000 PSI MOPD and Cv as high as 0.43 in a small footprint suited to redundant OEM designs.
- Continuous-duty rating supports valves that must stay on for extended cooling cycles.
- Manifold mount and operator-interface options reduce fittings, leak points, and flow-path turns in dense cooling hardware.
- Gems flow and level sensors round out cooling monitoring alongside the valve package.
Additional Sensors and Instruments for Data Center Cooling Systems
Solenoid valves control the coolant path; sensors confirm that level and flow remain within design limits. Related Gems options called out with this application note include:
- ELS-1100 solid-state electro-optic point level sensor
- FT-110 turbine flow sensor, continuous low flow measurement
- RFO / RFA RotorFlow sensors, continuous flow sensing with visual indication
For broader sensing context, see sensors for liquid cooling in data centers and the Gems data centers industry overview.
FAQ
What solenoid valves are used for data center cooling?
This application note highlights Gems AG and BG Series miniature solenoid valves for server and data center cooling loops. They are positioned for compact installations that still need meaningful flow (Cv up to 0.43) and high MOPD (up to 1000 PSI), including continuous-duty operation.
What is MOPD on a solenoid valve, and why does it matter for cooling?
MOPD (Maximum Operating Pressure Differential) is the highest pressure difference against which the valve can open or operate as rated. In pressurized coolant loops, adequate MOPD helps the valve perform reliably under the system’s differential pressure. AG and BG Series valves in this note are specified up to 1000 PSI MOPD.
Why choose a manifold-mount solenoid valve for server cooling?
A manifold-mount body lets OEMs integrate the valve into a custom manifold. That can shrink the package, reduce fitting count and cost, and remove leak points that come with extra plumbing, important in dense rack and CDU-style cooling hardware.
What is a solenoid valve operator interface?
In Gems’ operator-interface, the traditional valve body is omitted. The coil and internal mechanical parts are supplied so the customer’s manifold acts as the body, saving space and reducing turns in the flow path that can restrict flow.
Are AG and BG Series valves rated for continuous duty?
Yes. The original application note states these cooling valves are rated for continuous duty, so they can remain energized for extended periods without the limitations of intermittent-duty coils.
What Cv do AG and BG Series valves offer for server cooling?
Cv can be as high as 0.43, enough, with the stated pressure capability, to meet strict flow and pressure requirements called out for a server cooling valve in this use case.
What other sensors pair with cooling solenoid valves in data centers?
Gems commonly pairs fluid control with level and flow sensing, for example, ELS-1150 point level, FT-110 turbine flow, and RotorFlow sensors with visual indication.
