News

Home > News >

Company News About Negative Pressure Isolation Rooms And Theatres Engineered With H14 Exhaust And Interlocked Pressure Cascade

Negative Pressure Isolation Rooms And Theatres Engineered With H14 Exhaust And Interlocked Pressure Cascade

2026-11-13

Negative Pressure Isolation Rooms: Engineering The Air Path That Stops An Outbreak Spreading

When a patient with a suspected airborne infection is admitted, the room's pressure differential is the only barrier between their aerosol and the corridor. YANING builds negative pressure isolation rooms and negative pressure operating theatres as complete packages: airtight envelope, dedicated exhaust with H14 filtration, anteroom, interlocked doors and the alarm logic that makes a pressure failure visible within seconds.

The Pressure Chain

Corridor at ambient pressure, the reference point for the whole suite
Anteroom at -10 Pa, the buffer where PPE is donned and doffed
Isolation room at -20 to -30 Pa, the contaminated zone
Ensuite bathroom at -35 Pa, the most negative point

Air always flows from clean to dirty. Every door in the chain is interlocked so two cannot open at once, and the differential between adjacent zones is monitored rather than assumed.

Technical Specification

Item	Specification
Envelope airtightness	Under 0.3 air changes per hour at 50 Pa leakage
Exhaust filtration	H14 HEPA, 99.99% at 0.3 micron, bag-in bag-out option
Air change rate	12 ACH minimum, 15 ACH for high risk procedures
Pressure monitoring	Room and anteroom gauges, 0-50 Pa, 1 Pa resolution
Alarm logic	Visual and audible at door, repeated at nurse station, pushed to BMS
Door type	Hermetic sliding or swing, interlocked, vision panel
Sealing	Continuous gasket, sealed penetrations, no ceiling tile gaps

Three Failure Modes We Design Out

First, unsealed penetrations: a cable tray hole the size of a fist destroys a 30 Pa differential, so every service entry is gasketed and inspected with a smoke pencil at handover. Second, exhaust recirculation: if the exhaust discharge sits near an intake or an openable window, filtered air returns to the building, so discharge location is part of our design drawings. Third, alarm blindness: a gauge in an empty corridor protects nobody, so the signal is repeated at the point where staff actually stand.

From Isolation Room To Whole Department

The same engineering is applied to negative pressure operating theatres for infectious cases, to PCR and microbiology laboratories, and to pharmaceutical containment suites where potent compounds must not escape. Panels, doors, filters and controls come from one production line, which is why the pressure chain holds together at the joints where separate suppliers usually meet.

Send us the room plan and the required pressure cascade and we will return an isolation suite design with airflow balance calculations and an alarm schedule.

Events

News

Cases

Contacts

Contacts: Miss. Viola

Tel: 86--18373128025

Fax: 86-0769-85419534

Contact Now

Mail Us

Cleanroom Air Shower

Clean Room Booth

Cleanroom Pass Box

Operating Room Products

FFU Fan Filter Unit

Laminar Clean Bench

Medical Hand Wash Sink

Laminar Air Flow System

Clean Room Hepa Filter Box

Clean Room Garment Cabinet

Stainless Steel Medical Cabinet

HEPA Air Filter

Pocket Air Filter

Pre Air Filter

Clean Room Ventilation

Negative Pressure Isolation Rooms And Theatres Engineered With H14 Exhaust And Interlocked Pressure Cascade

News

Cases

Cleanroom Air Shower

Clean Room Booth

Cleanroom Pass Box

Operating Room Products

FFU Fan Filter Unit

Laminar Clean Bench