STJH-CONSTANT-AIR-VOLUME-CONTROLLER-DN250

Constant Air Volume Controller DN250 Self-Powered

A large circular regulator for a selected higher-volume operating band.

The larger connection suits substantial branches without a small-bore transition.
The external setting mechanism remains accessible outside the airstream.

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Introducción del producto

The broad DN250 passage houses a mechanical blade and damping system that respond to duct pressure. This selection uses a conservative portion of the available flow envelope for substantial constant-volume supply or extract duties.

Características clave

The larger connection suits substantial branches without a small-bore transition.
The external setting mechanism remains accessible outside the airstream.

Parámetros técnicos

Nominal Connection Diameter	250 mm
Selected Flow Range	522–1692 m³/h
Minimum Pressure Difference	50 Pa
Maximum Pressure Difference	1000 Pa
Air Temperature	10–50 °C
Scale Accuracy	±4%
Casing	Galvanized steel
Power Source	Self-powered by airflow forces
Regulating Assembly	Blade, damping bellows and leaf spring
Customization	Available for the intended large-branch duty and operating environment.

Applications

Large constant-volume supply branches
Substantial extract headers

Solutions for Your Application

The branch needs more volume than smaller controllers provide.

The DN250 casing accommodates the selected higher-flow operating band.

A fixed balancing blade cannot compensate for pressure variation.

The mechanical regulating assembly changes the blade angle in response to the duct condition.

Opciones disponibles

Flanged connections
Secondary silencer
Stainless steel casing

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