Technical Brochure LTG Air Distribution Highly-tight shut-off damper KLB
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 12020-2. The actual specifications are available as a word document at your local distributor or at www.ltg-ag.com. E Grenzstraße 7 70435 Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 2 of 6
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 224 14 000 17 000 19 000 250 11 000 13 700 14 900 315 6000 7500 8100 355 4400 5500 5900 400 3200 4000 4300 500 1300 1600 1700 630 1900 2300 2500 710 1300 1600 1700 800 1000 1200 1300 Table 1: Maximum permissible differential pressures [Pa] when opening the damper E Grenzstraße 7 70435 Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 3 of 6
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 224 250 315 355 400 500 630 710 800 K [db] -8-7 -4.5-3 0 +8 +19 +24 +29 E Grenzstraße 7 70435 Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 4 of 6
Dimensions B B from size 630 with 2 actuators Belimo: SF230A-S2, SF230A ØD au ØT Kreis ØD licht 600 500 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] 1051590 224 229 259 25x4 7 6 200 12.7 1051595 250 256 286 25x4 7 6 220 13.5 1051597 315 322 356 30x4 9.5 8 264 15.9 1051599 355 361 395 30x4 9.5 8 287 17.3 1051601 400 404 438 30x4 9.5 12 312 18.9 1051603 500 507 541 30x4 9.5 12 330 23.0 1051605 630 638 674 35x6 11.5 16 402 41.3 1051607 710 715 751 35x6 11.5 16 442 46.0 1051609 800 801 837 35x6 11.5 24 488 51.0 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 7 70435 Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 5 of 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 = 224 250 = 250 315 = 315 355 = 355 400 = 400 600 = 500 630 = 630 710 = 710 800 = 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 7 70435 Stuttgart Deutschland KLB-eng-TP (04/13) Printed in Germany Former editions are invalid Subject to technical modifications page 6 of 6
Product overview LTG Air Distribution Flow rate controllers Pressure controllers Special products and accessories Engineering Services
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 7 70435 Stuttgart Germany Tel.: +49 (711) 8201-0 Fax: +49 (711) 8201-720 E-Mail: info@ltg-ag.com www.ltg-ag.com LTG Incorporated 105 Corporate Drive, Suite E Spartanburg, SC 29303 USA Tel..: +1 (864) 599-6340 Fax: +1 (864) 599-6344 E-Mail: info@ltg-inc.net www.ltg-inc.net KLB-eng-TP (04/13) 429-27 E Former editions are invalid Subject to technical modifications