STJH-MULTI-STAGE-HOUSING-PRE-MOL-HEPA

Multi-Stage Air Filter Housing Three-Stage Prefilter, Molecular and HEPA

A stainless modular train combining coarse dust control, gas adsorption and final HEPA filtration in sequence.

Prefilter, HEGA and HEPA sequence
304L or 316L stainless options
Modular multi-cell layouts

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Product Introduction

This three-stage architecture addresses two different contaminant classes in one coordinated housing train. A prefilter protects the downstream components, a HEGA carbon adsorber treats the selected gas load, and a final HEPA removes fine particles. Published containment configurations include three-high by two-wide arrangements with 2, 4 or 6 in prefilters and 11.5, 16 or 18 in primary-filter depths. Each stage must be selected and monitored independently because molecular exhaustion and particle loading do not follow the same signal.

Key Features

Particle and gas control

The HEGA stage adds contaminant-specific adsorption between the protective prefilter and final HEPA.

Containment-train scalability

Matched modules can be arranged across several cells while maintaining consistent access and connections.

Independent maintenance logic

Pressure taps and gas monitoring can distinguish dust loading from adsorbent breakthrough.

Technical Parameters

Number of Stages	3
Stage Sequence	Prefilter, HEGA carbon adsorber, HEPA
Reference Configuration	3 filters high x 2 filters wide
Prefilter Depths	2, 4 or 6 in
Primary Filter Depths	11.5, 16 or 18 in
Housing Material	11- or 14-gauge 304L or 316L stainless steel
Access	Side-service modular sections
Contaminant Duty	Particulate plus selected gaseous contaminants
Monitoring	Separate resistance and gas-condition points
Customization	Available based on the intended application and operating environment.

Applications

For semiconductor support air, laboratories and controlled industrial ventilation requiring both molecular contaminant removal and final high-efficiency particle control.

Solutions for Your Application

The carbon stage is replaced based only on pressure drop and breaks through unnoticed.Use a media-life calculation, sampling or downstream gas sensor independently of the particulate-stage pressure readings.

The three-stage train exceeds the available fan static.Add the clean and final resistance of every selected stage and increase face area or fan capacity before final sizing.

Available Options

Define gas species, carbon media, prefilter and HEPA grades, cell arrangement, stainless grade, containment accessories, ports and stage monitoring.

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