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From operating rooms to intensive care units, from laboratories to emergency departments, there is an “invisible” yet life-critical infrastructure running throughout hospitals: the central vacuum station. The copper pipes hidden inside walls and the pumps in the machine room are, in a sense, the silent system managing the hospital’s breathing.

In this article, we explain what medical vacuum stations do, how they work, and why proper design and maintenance are crucial.

What Does a Medical Vacuum System Do?

A medical vacuum system provides a centralized infrastructure throughout the hospital for:

– Performing aspiration during surgical procedures
– Safely removing bodily fluids in intensive care units and patient wards
– Operating certain devices and processes under controlled low pressure

The “VAC” outlets seen on each floor are directly connected to vacuum pumps located in the machine room.

An improperly designed system can cause pressure fluctuations, insufficient flow rates, and hygiene issues, directly affecting patient safety and hospital operations.

Main Components of a Vacuum Station

A typical medical vacuum station consists of the following core elements:

Vacuum Pumps

They are generally configured with redundancy such as 2+1 or 3+1 (N+1).
Depending on requirements, oil-lubricated rotary vane, dry-type, or screw pumps are selected.
The goal is to continuously maintain the vacuum level specified in standards such as EN ISO 7396-1.

Vacuum Tanks

They stabilize the vacuum level by dampening sudden flow fluctuations within the system.
They support efficient pump sequencing and control strategies.
Tank volume is calculated based on building size and usage scenarios.

Copper Piping and Manifolds

Similar to oxygen and other medical gases, the vacuum line is installed using rigid drawn copper pipes and appropriate fittings.
Color coding and labeling ensure that vacuum lines are clearly distinguished from other gas lines on-site.

Filters and Separators

They prevent liquids and particles from entering the system, protecting both pumps and pipelines.
Safe separation of contaminated fluids, especially from operating rooms and intensive care units, is critically important.

Control Panel and Automation

They manage the sequential activation and deactivation of pumps.
In case of failure, they automatically engage the backup pump.
They monitor tank pressure levels.
They transmit alarms and warnings to relevant personnel.

A properly designed automation system plays a key role in energy efficiency and uninterrupted service.