Negative-pressure containment pass box with stainless body and exhaust filter module

Equipos de descontaminación de personal y material

Caja de contención de presión negativa

Una cámara de transferencia mantenida por debajo de la presión de las salas adyacentes, de modo que las fugas se dirijan hacia el interior y se conduzcan al escape filtrado.

Negative Chamber Bias
Filtered Exhaust
Controlled Make-Up Air
Pressure-Gated Interlocks

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Introducción del producto

The negative-pressure containment pass box moves dusty, potent or odorous material without allowing a passive leak towards the support space. A variable-speed exhaust fan maintains the selected negative pressure, while a controlled make-up path avoids excessive suction at the door seals. A pressure signal controls the interlock logic and indicates when the chamber has recovered after a transfer.

Características clave

Closed-loop fan control responds to the measured chamber pressure.

A deliberate make-up air path limits high-velocity leakage through random gaps.

The clean-side door can remain inhibited until pressure recovers.

A sealed final-filter service panel separates captured material from the corridor.

Smooth welded internal surfaces support wipe-down after transfer.

Soluciones para su aplicación

The chamber needs to keep leakage inward without making doors difficult to operate or disrupting adjacent spaces.

Exhaust force makes a door difficult to unlatch.Controlled make-up air and an adjustable setpoint limit the differential pressure.

Filter loading reduces extraction and reverses the leakage direction.Pressure-responsive fan control adjusts airflow as resistance changes.

Captured powder is exposed during routine filter service.A gasketed service housing keeps handling on the designated dirty side.

The next door opens before the chamber recovers.Pressure-gated interlocks delay release until the selected negative bias returns.

Aplicaciones típicas

Potent compound transferPowder dispensing roomsHazardous sample handlingOdour-controlled process suites

Parámetros técnicos

Typical pressure-containment construction ranges for a negative-pressure pass box are listed below.

Materiales Core	Welded SUS 304 or SUS 316L chamber with variable-speed exhaust, make-up inlet and HEPA final filter
Panel de espesor	80-150 mm sealed plenum and double-wall construction
Ancho efectivo	500-1200 mm clear chamber width
Longitud máxima	Hasta 1500 mm de profundidad de la cámara
Acero frente a espesor	1.2-1.5 mm stainless-steel facing
Densidad Core	35-40 kg/m³ polyurethane insulation around pressure and filter plenums
Conductividad térmica	0.022-0.028 W/(m·K) para el aislamiento de poliuretano del plenum
Superficie acabada	Brushed or electropolished stainless chamber with smooth coved internal corners
Tipo conjunto	Pressure-tight welded body with gasketed interlocked doors and sealed filter-service panel
Customization	Disponible según la aplicación prevista y el entorno operativo.

Opciones disponibles

Typical -10 to -50 Pa pressure rangeSafe-change exhaust filterRemote alarm contactsRoom-specific pressure setpoint

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