Intumescent Internal Fire Clamp - for Internal Metal Trunking Trade Name: ASTRO NT CLAMP
	Allows free air flow through trunking Easy to install with no maintenance Perfect solution for retrofit of cables Continuity of protection removal not necessary for cable alteration
The intumescent fillers contained within the ASTRO Clamp will intumesce (expand) at about 125°C to form an insulating char. BS476 Part 20: 1987, AS 1530.4 and AS 4072.1
Areas Of Use Suitable for all metal trunking where it breaches fire compartment floors and walls. Under raised access floors where cabling is often abundant, i.e. computer, switch and security rooms. Retrofit: Perfect for installations where frequent cable alterations occur.
Availability SIZES PRODUCT CODES & RATINGS INTERNAL CLAMP SIZE 120 mins Fire Rating 240 mins Fire Rating 50 x 50mm* (2" x 2") ANT 2/120 ANT 2/240 50 x 75mm (2" x 3") ANT 23/120 ANT 23/240 75 x 75mm (3" x 3") ANT 3/120 ANT 3/240 100 x 100mm (4" x 4") ANT 4/120 ANT 4/240 150 x 150mm (6" x 6") ANT 6/120 ANT 6/240 * This model has a slide fit retaining devise replacing the twist and lock mechanism. Sizes other than the above are available, consult ASTROflame.
Description COMPARTMENTATION: The sub-division of compartments in a building, if effectively fire-stopped, will prevent the spread of fire and smoke through fire-resisting and separating elements, thereby reducing the risk of and fire damage to the primary building structure. Electrical penetrations, such as metal trunking, by necessity breach these elements. It is therefore essential that fully tested products/systems are installed to maintain the integrity and insulation of the compartment wall or floor whilst providing adequate thermal insulation to the internal cabling. With metal trunking being such an excellent medium for heat conduction and coupled with the flammability and conductivity of cables, the need to fire stop metal trunking internally is paramount in containing a fire’s spread. PVC cable sheaths contain about 50% chlorine which when submitted to temperatures exceeding 140°C will start to vaporize, emitting highly corrosive hydrogen chloride gas. If water vapour is present and combines with the gas forming hydrochloric acid, the corrosive effect on the cabling and metal trunking could cause irreparable damage to a building’s power and communication systems, which may continue well after the fire itself has been extinguished. ASTRO Internal Clamp consists of 2 or 4 steel fins (depending on whether 2 or 4 hour fire resistance is required) which are welded at equidistant centres to a steel plate. The inner and outer surfaces of the fins are lined with an intumescent sheet. The ASTRO Internal Clamp is mechanically restrained within the trunking by means of a twist and lock mechanism which is riveted through the top of the ASTRO Internal Clamp and partially lined with intumescent graphite sheet. Packing Available to order in any quantity, To Order & Specify Please quote- Quantity/ Trade name /Product Code Typical wording- 10/ASTRO NT CLAMP/ ANT 2/120 Fire Test or Assessment Reports BS476 Part 20: 198, AS 1530.4 and AS 4072.1 International Fire Consultants and Warrington Fire Research ASTRO Internal Clamp has achieved integrity and insulation ratings up to 4 hours Installation To install the ASTRO Internal Clamp insert into the metal trunking either before or after the cables have been pulled. Once in place, rotate the twist and lock mechanism, thereby retaining the ASTRO Internal Clamp in place. If required and with some pressure it can slide along the trunking to suit site application requirements. ASTRO Internal Clamps must always be contained within the fire resisting and separating elements. Maintenance Unlike intumescent pillows which are the most common methods of fire protection, ASTRO Internal Clamps do not require renewal in the event of cable alteration. Thus ensuring this protection is permanent without the potential loss or damage which effect other system types Health and Safety The product does not present any known health hazards during or after installation. Normal good industrial and personal hygiene practises should be observed. As part of our policy of ongoing improvements, we reserve the right to modify, alter or change product specifications without giving notice. Product illustrations are representations only. All information contained in this document is provided for guidance only, and as ASTROFLAME FIRESEALS LTD has no control over the installation methods of the products, or of the prevailing site conditions, no warranties expressed or implied are intended to be given as to the actual performance of the products mentioned or referred to, and no liability whatsoever will be accepted for any loss, damage or injury arising from the use of the information given of products mentioned or referred to herein. The above information to the best of our knowledge is true and accurate and based upon current test data and is supplied for your guidance only. Customers should satisfy themselves to the suitability of the product in its intended use and no guarantee is given or implied since the conditions of actual use are beyond our control. ASTROflame (Fireseals) Ltd, disclaim any liability for loss, damage or other expense arising from the use of information, data or products mentioned or referred to and reserve the right to change any details or specifications without notice.
Astroflame (Fire Seals) Ltd. Intumescent House Unit 8, The IO Centre, Stephenson Road, Segensworth FAREHAM, ENGLAND PO15 5RU tel 0800 023 2482 (01329 844500) fax 0800 023 2483 (01329 844600) intl tel +44 1329 844500 fax +44 1329 844600 email sales@astroflame.com
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