STjh round-duct safe-change filter housing main product view

STJH-SAFE-CHANGE-HOUSING-ROUND-DUCT

Safe-Change Filter Housing Round-Duct

A contained HEPA section with circular duct connections for compact process-vent and exhaust lines.

Round inlet and outlet
Side-access BIBO service
Gasket or gel filter seal

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Product Introduction

Round inlet and outlet transitions distinguish this safe-change housing from rectangular AHU sections. The welded stainless cabinet retains a side-access bagging ring while adapting the filter cell to circular ventilation ductwork. Gasket or gel sealing can be selected to match the HEPA element. Because the transition geometry affects face distribution, the inlet diameter and available straight length must be coordinated with the filter airflow.

Key Features

Circular duct integration

Factory transitions connect a rectangular HEPA face to round process or exhaust ductwork.

Compact containment section

A single side-service cabinet reduces field transition work on small vent lines.

Selectable seal interface

The internal frame can be arranged for a compressed gasket or gel-trough filter.

Technical Parameters

Inlet Connection	Round duct transition
Outlet Connection	Round duct transition
Housing Material	Fully welded stainless steel
Filter Seal	Gasket or gel by configuration
Change Method	Side-access bag-in/bag-out
Filter Capacity	Single containment filter cell
Service Interface	Door with ribbed bagging ring
Flow Duty	Containment ventilation
Transition Design	Sized to selected duct diameter and airflow
Customization	Available based on the intended application and operating environment.

Applications

For compact nuclear support vents, biocontainment exhaust branches and process ducts that use round connections but require contained HEPA replacement.

Solutions for Your Application

A short round transition creates a high-velocity jet across only part of the HEPA face.Size the transition angle and straight length for uniform distribution and verify filter-face velocity at design flow.

The bagging port collides with nearby circular duct supports.Coordinate door swing, bag extension and hanger positions on the installed layout before fabrication.

Available Options

Confirm duct diameters, airflow, transition lengths, stainless grade, filter seal, access side, test ports and support brackets.

Planning a Safe-Change Filter Housing Round-Duct specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

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