Cast in firestop devices

[anbm]

Did anyone use cast-in fire stop devices / sleeves especially model
#CP 680-M from Hilti, what kind of material do they use to make this devices? Is it PVC? How does it work?

 

[Jraef]

Did anyone use cast-in fire stop devices / sleeves especially model
#CP 680-M from Hilti, what kind of material do they use to make this devices? Is it PVC? How does it work?

It's not PVC. Its a special chemical compound with a property called "in-tumescence". In-tumescent materials, when exposed to flames, create a swollen (tumescent) "char" of ash. This ash char then actually insulates the material below it from the flames until eventually it gets consumed, and the layer below it chars and swells. The process continues until the in-tumescent material is all consumed, but hopefully that has bought enough time for the fire to get under control and not spread through the fire stop. that's why the fire rating is in hours and depends on the depth of the fire stop material; the deeper the fire stop material, the longer it holds off the fire.

The "goop" that carries the in-tumescent materials can be silicon, latex, putty, paint, all kinds of different building materials, but generally not PVC, because PVC is itself too flammable.

 

[weressl]

It's not PVC. Its a special chemical compound with a property called "in-tumescence". In-tumescent materials, when exposed to flames, create a swollen (tumescent) "char" of ash. This ash char then actually insulates the material below it from the flames until eventually it gets consumed, and the layer below it chars and swells. The process continues until the in-tumescent material is all consumed, but hopefully that has bought enough time for the fire to get under control and not spread through the fire stop. that's why the fire rating is in hours and depends on the depth of the fire stop material; the deeper the fire stop material, the longer it holds off the fire.

The "goop" that carries the in-tumescent materials can be silicon, latex, putty, paint, all kinds of different building materials, but generally not PVC, because PVC is itself too flammable.

All those I am familiar with are water based inorganic material and after it dries only the intumescent mortar is left in place.

 

[quogueelectric]

It's not PVC. Its a special chemical compound with a property called "in-tumescence". In-tumescent materials, when exposed to flames, create a swollen (tumescent) "char" of ash. This ash char then actually insulates the material below it from the flames until eventually it gets consumed, and the layer below it chars and swells. The process continues until the in-tumescent material is all consumed, but hopefully that has bought enough time for the fire to get under control and not spread through the fire stop. that's why the fire rating is in hours and depends on the depth of the fire stop material; the deeper the fire stop material, the longer it holds off the fire.

The "goop" that carries the in-tumescent materials can be silicon, latex, putty, paint, all kinds of different building materials, but generally not PVC, because PVC is itself too flammable.

Just a clarification the individual fire prevention materials of a listed system fire/smoke stop has a zero time fire rating. Only the properly installed fire stop SYSTEM contains any kind of time rated fire stop rating. If you put more product down than is required is just a waste of material and time for said system. Follow mfgs instructions carefully as once you are a certified installer you now assume liability for your instalations.

 

[ohmhead]

Did anyone use cast-in fire stop devices / sleeves especially model
#CP 680-M from Hilti, what kind of material do they use to make this devices? Is it PVC? How does it work?

Well yes our company uses all the Hilti sleeves on our projects i like the thur wall new cable type ones they have if you need to go back and add a cable it twists open and you can install a new or added cable thur sleeve then twist back closed nice .

The part i dont like about the floor type conduit hilti sleeves is one way entrance of conduit floor to floor risers installing!!!


Trick with larger Hilti pipe sleeves thur floor the fire sealing ones Hilti has is you must push a conduit thur from bottom to top dont push from top of sleeve down or you will break the seal and its all over its now no good so you must fire seal yourself as the inside fire ring deal falls out of that seat broken .

Electricians never read instructions but after a building is topped out who has the instructions for the sleeves .


But what i like about the conduit sleeves is the inch markings on the sides you can cut and they have a cap to pop on to any height so no more homebru duck taping & resizing of old plastic pipe sleeves meaning time saved .

And the old plastic type sleeves that would get out of plumb do to thin walls and the cheap base styles egging so you cant get a conduit thur .

Hilti has a stronger pipe sleeve IMO.

I like Hilti products but i really like them because this week there feeding our guys a Hilti lunch on our job site just electricians .

 

[Jraef]

Just a clarification the individual fire prevention materials of a listed system fire/smoke stop has a zero time fire rating. Only the properly installed fire stop SYSTEM contains any kind of time rated fire stop rating. If you put more product down than is required is just a waste of material and time for said system. Follow mfgs instructions carefully as once you are a certified installer you now assume liability for your instalations.

Point taken.