Circular ceiling diffusers (disc valves) PV have a central disc that is supported by a screw and when it rotates it moves inwards (-) or outwards (+) varying the amount of air passing through the valve.
Depending on the type, they are manufactured from anodized aluminium, aluminium powder painted in RAL color, stainless steel and plastic PVC. They are designed for all types of air conditioning, ventilation, heating or cooling systems and are used in small spaces such as toilets, hallways and small rooms.

They are suitable for installation on a ceiling, wall or air duct, for supply or return air, depending on the type.

The standard dimensions are : Ø100, 125, 150, 160 & 200.

PV1 : Manufactured from aluminium, powder painted in RAL 9010 (white). Suitable for return air.
PV2 : Manufactured from aluminium, powder painted in RAL 9010 (white). Suitable for supply air.
PVI : Manufactured from stainless steel. Suitable for return or supply air.
PVP : Manufactured from plastic PVC. Suitable for return air.