The KGRR damper is installed in general industrial ventilation systems and is designed to reliably isolate one room from another or from the outside environment. It is intended for moving air in ventilation systems free from mechanical impurities, sticky, or fibrous substances. The damper serves as a shut-off device and is not intended for airflow regulation.
Hermetic valve KGRR with reducer
Hermetic valves



Round Airtight Damper KGRR
The KGRR damper is installed in general industrial ventilation systems and is designed to reliably isolate one room from another or from the outside environment. It is intended for moving air in ventilation systems free from mechanical impurities, sticky, or fibrous substances. The damper serves as a shut-off device and is not intended for airflow regulation.
Operating temperature range: from -45°C to +40°C. Climate version – U2 according to GOST 15150.
Produced in three drive options: manual drive, manual gearbox, or electric drive with manual override. The body is made of carbon steel with a powder coating.
Technical Specifications of KGRR
Parameter | Value |
Working medium | Ventilation system air |
Temperature, °C | -45…+40 |
Working pressure, MPa (kgf/cm²) | 0.005 (0.05) |
Connection | Flanged |
Flow direction | Towards the disc (to enhance gasket sealing) |
Overall and Connection Dimensions
Model | D | Dn | d, mm | n, pcs | A, mm | B, mm | C, mm |
KGRR-100 | 200 | 100 | 11 | 8 | 338 | 495 | 205 |
KGRR-150 | 250 | 150 | 11 | 8 | 388 | 520 | 205 |
KGRR-200 | 300 | 200 | 11 | 8 | 445 | 545 | 205 |
KGRR-225 | 325 | 225 | 11 | 8 | 470 | 560 | 205 |
KGRR-250 | 350 | 250 | 11 | 8 | 500 | 580 | 205 |
KGRR-300 | 400 | 300 | 11 | 12 | 540 | 605 | 290 |
KGRR-315 | 400 | 315 | 11 | 12 | 540 | 605 | 290 |
KGRR-400 | 500 | 400 | 11 | 12 | 640 | 630 | 290 |
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