Intumescent Fire Collar for Large Diameter Plastic Pipes | Retrofit

Intumescent Fire Collar for Large Diameter Plastic Pipes | QWX

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

Name: Intumescent Fire Collar for Large Diameter Plastic Pipes


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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

Product Information


The 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.


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

Standards & Approvals

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. 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.

Performance Table

Product Code Pipe Size (mm) Recommended hole diameter (mm) QWX length (mm) Fire Rating (Walls) Fire Rating (Floors)
QWX200 200Ø 202Ø 190 4 Hours 3 Hours
QWX225 225Ø 227Ø 190 4 Hours 3 Hours
QWX250 250Ø 252Ø 190 4 Hours 3 Hours
QWX315 315Ø 317Ø 190 3 Hours 2 Hours
QWX350 350Ø 352Ø 190 2 Hours 3 Hours*
QWX400 400Ø 402Ø 190 2 Hours 3 Hours*

*QWX350 and QWX400 achieve 3 hours, only when installed on both sides of the floor.

Installation Information

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 QSS QuelStop CE Marked Intumescent Acoustic Acrylic Sealant.

The 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.

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QWX Large Diameter Fire Collars - Technical Documentation