S-PRD

The PRD (Pressure Relief Damper) is an automatic damper that acts as a “safety device” to control and maintain stable pressure within ductwork or enclosed spaces. When the pressure exceeds the setpoint, the damper blades automatically open to relieve excess pressure, protecting the system from potential damage. It can operate via a counterweight mechanism or a motorized actuator. It is suitable for installation in square, rectangular, or round ductwork.

Starduct PRDs are manufactured using high-quality materials. The motorized dampers utilize actuators from Belimo (the world’s leading manufacturer of HVAC damper actuators).

Specifications

Frame

Hoa Sen galvanized steel with thickness from 0.75 – 1.5mm.

Material standard: ASTM A653/A653M.

Optional materials: stainless steel and ZAM steel.

Contact us for custom material or thickness requirements.

Blade

Hoa Sen galvanized steel with a thickness from 0.58mm (for counterweight-operated dampers).
Hoa Sen galvanized steel with a thickness from 0.75mm to 1.5mm (for motorized dampers).

Control mechanism

Gravity

Belimo actuator

Actuator specifications

Brand

Belimo

Specifications

Contact NTK

Contact Us