OT Pressure Control Systems
While the AHU generates the airflow, the Pressure Control System acts as the "brain and valves." An Operation Theatre must maintain constant positive pressure so contaminated air from corridors cannot enter when doors open. We manufacture the precise monitors, motorized dampers, and relief valves required to lock in your OT's Class 100 sterility.
- Maintains +15 Pa Pressure
- Digital Micro-Monitors
- Motorized VAV Dampers
- Automated VFD Feedback
Product Configurations
Every configuration is precision-manufactured and modularly designed to fit your exact demands.
Differential Pressure Monitors
These act as the "eyes" of the entire system. Installed flush into the OT wall (or integrated directly into our Surgeon Control Panels), these digital screens provide real-time readings of the air pressure inside the surgical room compared to the outside corridor.
The monitor is programmed to ensure the room stays within the mandatory NABH positive pressure range of +2.5 Pa to +15 Pa. If the pressure drops below the safe threshold, it instantly triggers an audible and visual alarm, warning the surgical staff of a potential cleanroom breach.
Motorized VAV / VCD Dampers
These act as the "muscles." Variable Air Volume (VAV) or Volume Control Dampers (VCD) are mechanical valves installed deep inside the HVAC ducting network just before the air enters the OT ceiling.
They are fitted with electronic actuators. When the Pressure Monitor detects a drop in room pressure, it sends a signal to these actuators, which automatically open the damper flaps wider, allowing a massive rush of supply air from the AHU to re-pressurize the OT instantly.
Pressure Relief Dampers (PRD)
This is the critical "safety valve." If an AHU pumps too much air into a perfectly hermetically sealed room, the pressure builds up excessively. Extreme positive pressure makes it physically impossible to push the heavy OT doors open, trapping the staff inside. Worse, it can cause the false ceiling tiles to pop out.
The PRD is usually installed low on the OT wall. It features precisely calibrated, gravity-weighted louvers. The moment the room pressure exceeds +15 Pa, the louvers automatically swing open, venting the excess sterile air safely into the corridor and maintaining perfect equilibrium.
VFD Automation Logic (AHU Link)
The ultimate communication link. Instead of just relying on duct dampers, our advanced pressure control systems communicate directly with the Air Handling Unit itself via a Variable Frequency Drive (VFD) panel.
If the OT requires more pressure, the system commands the VFD to literally spin the massive AHU blower motors faster. If the room is over-pressurized, it slows the motors down. This automated feedback loop provides the most stable cleanroom environment possible while drastically reducing electricity costs for the hospital.
Anatomy of Safety
Our systems are governed by extreme safety protocols to ensure zero-defect, fail-safe operation.
Micro-Processor Sensors
We utilize high-sensitivity internal diaphragms capable of detecting pressure variances as minute as 0.1 Pascal. This guarantees that your digital displays provide flawless, real-time feedback without lag.
- • 0.1 Pa Sensitivity
- • Real-Time Telemetry
Electronic Actuators
The dampers are driven by swift-response 24V or 230V electronic actuator motors. They continuously modulate the damper louvers open and closed, instantly compensating for any sudden door openings.
- • Swift-Response Motors
- • Continuous Modulation
Isolated Control Wiring
To prevent electromagnetic interference from heavy surgical equipment, all data lines connecting the monitors to the AHU VFDs are heavily shielded. This ensures the communication loop never drops during a procedure.
- • EMI Shielded Data Lines
- • Flawless VFD Integration
Key Applications
Modular OTs
Isolation Wards
Cath Labs
CSSD Cleanrooms
Why Choose MedGenz?
We don't just supply equipment; we engineer and execute complete turnkey hospital ecosystems.
Turnkey Solutions
By providing End to End pressure control solutions, we eliminate delays and ensure strict quality control.
ISO & CE Certified
Our processes and products strictly adhere to ISO 9001:2015, ensuring medical-grade outcomes.
Pan-India Execution
Headquartered in Delhi NCR, our engineering teams travel directly to your hospital site anywhere.
Lifetime Support
Our relationship doesn't end after handover. We provide comprehensive lifetime maintenance.
Fixing the "Jammed Door" Crisis in a Haryana Hospital
A newly built surgical hospital in Haryana called us with a bizarre emergency. Their new OT was so heavily pressurized by their AHU that nurses were physically unable to push the swing doors open to get patients out after surgery. The local contractor had completely forgotten to install a pressure regulation system.
The Solution: Our engineering team rapidly intervened. We cut a precise opening in the modular wall panel and installed a calibrated Pressure Relief Damper (PRD). We then retrofitted a Differential Pressure Monitor linked to the AHU's VFD. Within 24 hours, the room achieved perfect equilibrium. The excess air safely vented into the corridor, and the heavy doors could be opened effortlessly with one hand.
Technical Specifications
| Standard Operating Pressure | +2.5 Pascal to +15 Pascal (NABH / CDC compliance range) |
|---|---|
| Monitor Display type | Digital LED / Touchscreen LCD (Standalone or Integrated in Surgeon Panel) |
| Motorized Damper Type | Extruded aluminum aerofoil blades with 24V / 230V Actuators |
| PRD Flap Material | Stainless Steel SS-304 with gravity-weighted calibration mechanism |
| Alarm Outputs | Audible Buzzer & Flashing Red LED for High/Low pressure faults |
Our Certifications & Compliance
MedGenz is certified and trusted by leading regulatory bodies for healthcare safety.
Udhyam
Government of India recognized MSME Enterprise
CE Certified
European Conformity Standards for Medical Devices
ISO 9001
Quality Management System Certified
Import Export
Registered DGFT Import-Export License
Our Valuable Clients
Trusted by leading healthcare institutions across India. Drag to explore.
Common Questions
Frequently Asked Questions
Technical details regarding our OT Pressure Control Systems.
1Why must an Operation Theatre have positive pressure?
2What is a Pressure Relief Damper (PRD)?
3How does the pressure system communicate with the AHU?
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