QWX Large Diameter Fire Collars

Quelfire QWX Fire Collars prevent the spread of fire through large diameter pipes where they penetrate fire compartment walls and floors.

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Features & Benefits

· Tested to BSEN 1366-3: 2009
· Suitable for concrete floors and blockwork walls
· Up to 4 hour fire rating
· Available for 200—400mm pipes
· Can be retrofitted


Building Regulations impose limitations on all pipes passing through fire compartment walls and floors. Quelfire QWX Fire Collars allow plastic pipes to meet the requirements of the Building Regulations. Quelfire QWX Fire Collars have been tested according to BSEN 1366-3: 2009 where pipe diameters of up to 400mm have met insulation and integrity criteria for this standard for up to four hours.


The Quelfire QWX Fire Collars consist of a continuous pressed stainless steel flexible shell containing high performance graphite based intumescent material which reacts under the influence of heat to exert pressure on the pipe as it softens to form a carbonaceous char which provides an effective insulation plug thus preventing smoke and fire passing through to the adjoining compartment. The QWX Fire Collar has built in fixing lugs which are used to secure it to the structure.


Quelfire QWX Fire Collars are expected to last the lifetime of the building.

Application / Installation

Quelfire QWX Fire Collars should be used where a large diameter plastic pipe penetrates a fire rated wall or floor.
For vertical pipework, one unit should be installed to the underside of the floor, and for the QWX350 and QWX400 one units should be fitted on both sides of the concrete floor. For horizontal pipework one unit should be fitted to each side of the wall.

The soffit of the floor or the face of the wall must be smooth and where there are irregularities in the surface, the space between the flange of the unit and floor or the wall should be made good using Quelfire GM Intumescent Acoustic Acrylic Sealant.

The Quelfire QWX Fire Collar should be fed around the plastic pipe, securing the ends together by passing the tongues on one end through the slots on the other end. The tongues should then be bent back and the unit secured to the structure using the integral fixing lugs.

The QWX Fire Collar must be secured to concrete and masonry construction using steel sleeve anchors.

Technical Support & Guidance

Should you require any further information regarding this product, please don’t hesitate to contact one of our specialists.


Product CodePipe Size (mm)Recommended hole diameter (mm)QWX length (mm)Fire Rating (Walls)Fire Rating (Floors)
QWX200200Ø202Ø1904 Hours3 Hours
QWX225225Ø227Ø1904 Hours3 Hours
QWX250250Ø252Ø1904 Hours3 Hours
QWX315315Ø317Ø1903 Hours2 Hours
QWX350350Ø352Ø1902 Hours3 Hours
QWX400400Ø402Ø1902 Hours3 Hours
*QWX350 and QWX400 achieve 3 hours only when installed on both sides of the floor.