The Innovation Company. LTG Aktiengesellschaft. Technical Brochure. LTG Air Distribution. Highly-tight shut-off damper KLB

Transcription

1 Technical Brochure LTG Air Distribution Highly-tight shut-off damper KLB

2 Notes Dimensions stated in this brochure are in mm. Dimensions stated in this brochure are subject to General Tolerances according to DIN ISO 2768-vL. Possible additional details are stated in the drawings. Straightness and twist tolerances according to DIN EN The actual specifications are available as a word document at your local distributor or at E Grenzstraße Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 2 of 6

3 View of unit Application, advantages meets highest isolation/ sanitation requirements, e.g. in cleanrooms, hospitals, labs, fume cabinets etc. With increasing pressure the damper seal becomes more effective. Function The KLB highly--tight shut-off damper is designed to hermetically shut off air flow. The leakage air rate is too low to be reported when tested. The requirements of DIN 1946 Sheet 4 and DIN EN 1751 Class 4 are clearly met or surpassed. A near perfect isolation is achieved using a positive seal technique whereby the blade rotates and then closes onto a peripheral seal. For this purpose a 4-joint link mechanism is used that, from the open position, first rotates the blade by 90_, then after a translation movement pushes it in a longitudinal direction onto the damper housing against a sealing ring. The fully welded damper housing is penetrated only by two pivot shafts, with these places being reliably sealed using a gasket. Range of products The highly-tight shut-off damper KLB is available in a round version with nominal sizes 224 to 800 mm diameter. The standard version is made of galvanized steel. A special version is available made ofa V2A stainless steelespecially for applications that require disinfection. Also available with manual operator, pneumatic or electric actuator. If required, the electric actuator may be equipped with a position switch to indicate the open or closed position. Leak test procedure With the damper blade closed the housing is subjected to a positive pressure of 500 Pa. Bearings and connections are covered with a test liquid in order to disclose leakage points. No bubble formation is allowed. The blade is then repeatedly opened and closed. Again using a pressure of 500 Pa, the closed blade's sealing effectiveness is checked. No bubble formation is allowed. The two procedures are repeated with a pressure of 100 Pa. Each damper is tested individually (100 %). On request, tests may be performed in compliance with relevant standards. Permissible differential pressures when opening the damper with air motor SMC If the highly-tight shut-off damper KLB is to be re-opened after closing the differential pressure present at the closed damper may not exceed the maximum differential pressure [Pa] shown in table 1 to ensure that there is sufficient power to open the damper. Allowed differential pressures for electric actuators on request. If the actual differential pressures are higher than the ones givenintable1atwinactuatormaybeusedsothatthe maximum permissible differential pressures may be 1.8 times the values given in the chart. Size NW Set pressure at function pressureless closed 1.2 bar or function pressureless open 1.5 bar 1.7 bar Table 1: Maximum permissible differential pressures [Pa] when opening the damper E Grenzstraße Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 3 of 6

4 Pressure drop and sound power produced by airflow through the damper with the blade in the open position. Pressure drop p [Pa]( = 1.2 kg/m 3 ) A-weighted sound power level L WA1 [dba] NW 224 NW 250 NW 315 NW 355 NW 400 NW 500 NW 630 NW 710 NW 800 Determination of the A-weighted sound power level for various nominal sizes of the highly-tight shut-off damper. In the present data sheet L WA1 is the A-weighted sound power level for shut-off damper size 400. For the other nominal sizes, the following corrections to the diagram values must be applied: K = L WA -L WA1 Size NW K [db] E Grenzstraße Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 4 of 6

5 Dimensions B B from size 630 with 2 actuators Belimo: SF230A-S2, SF230A ØD au ØT Kreis ØD licht from size 630 with 2 actuators Belimo: SF230A-S2, SF230A n (number of holes) Material No. Size Inside diameter ØD licht Reference circle ØT Kreis Flat bar steel Hole diameter Ød Number of holes n Height Weight B [mm] [mm] [mm] [mm] [mm] [kg] x x x x x x x x x Installation, assembly Perform duct installation of the highly-tight shut-off damper KLB with the damper axis in a horizontal position. Any other installation will require the express permission of. E Grenzstraße Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 5 of 6

6 Nomenclature KLB 224 / S / / Z / SF230A (1) (2) (3) (4) (5) (6) (1) Series KLB = Highly-tight shut-off damper, round (2) Size or Ø 224 = = = = = = = = = 800 (3) Version S = Steel, galvanized E2 = Stainless steel, V2A (1.4301) E4 = Stainless steel, V4A (1.4571) (4) Insulation = Without D = With (5) Stromlos Z = Closed A = Open (4) Actuator = Without M = Manual adjustment SF230A = Belimo SF230A Alternatively, the shut-off damper can also be designed with actuating drives of different makes. 1.Dient zur Identifizierung der letzten Seite E Grenzstraße Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 6 of 6

7 Product overview LTG Air Distribution Flow rate controllers Pressure controllers Special products and accessories Engineering Services

8 Comfort Air Technology Air-Water Systems Air Diffusers Air Distribution Process Air Technology Fans Filtration technology Humidification Technology Engineering Services Air flow tests Thermodynamics Acoustics / Comfort Customised solutions FI NO SE EE RU IE DK LV GB RU LT BY NL DE BE DE PL FR LU CZ SK LI CH LI AT MD HU SI HR RO UA PT ES IT BA ME RS BG AL MK GR TR Grenzstraße Stuttgart Germany Tel.: +49 (711) Fax: +49 (711) info@ltg-ag.com LTG Incorporated 105 Corporate Drive, Suite E Spartanburg, SC USA Tel..: +1 (864) Fax: +1 (864) info@ltg-inc.net KLB-eng-TP (04/13) E Former editions are invalid Subject to technical modifications