ST -1 is a square swirl diffuser used to introduce or evacuate air.
The diffuser is recommended for rooms up to 4m high.
The design of the blades, their radial arrangement and the swirl action determine a high level of induction rate.
The diffuser can be used for installations with constant or variable air flow.
The diffuser blades are fixed and arranged radially at the front plate.
Air induction occurs rapidly due to the swirl action, resulting in a rapid change of temperature.
The diffuser has the external dimensions 595×595 mm.
The product is delivered with the following elements: mounting bracket, fixing screw, screw cover cap and sealing gasket.
1 - Masking cap
2 - Fixing screw
3 - ST-1 diffuser
4 - Bracket (mounting crossbar)
5 – Plenum box (optional)
6 - Perforated damper (optional)
The above values are given for a temperature difference of -6K and for horizontal connection to the duct.
Ak [m²] - The free surface
∆Pt [Pa] - Pressure loss
X [m] - The length of the air jet at a speed of 0.25 m/s
NR [dB (A)] - Noise level without room attenuation
The diffuser can be delivered with a connecting plenum to the circular duct, with horizontal or vertical connection.
The plenum is provided with suspension elements (lugs) and bead roll on the spigot, for easy fixing of the flexible duct.
Optionally, a perforated damper can be mounted on the plenum connection to balance the air flow.
Adapter (plenum box)
The adapter is made of Z140 galvanized steel sheet and has 4 suspension lugs.
On request, the plenum can be insulated with 6 mm thick elastomeric rubber.
The perforated damper is mounted on the adapter spigot and has the role of balancing the air flow.
The diffuser can be mounted in 600 x 600 mm T-bar false ceiling, continuous ceiling or suspended.
The fixing of the plenum diffuser is done by using a central screw screwed into the mounting bracket, positioned inside of the plenum box.
Installation in T-bar suspended ceiling
Installation in continuous ceiling
Suspended in the ceiling