| 摘要 |
The shutoff flap assembly is a cartridge insert in a one-piece housing (1), with a seal (2) over the whole housing length. An integrated metal spring (2a) is anchored in the seal for the resetting force. A flap disk (3) is centered at the seal, for rotation to give the opening and closing actions through the keyed switch shaft (4). The shutoff flap assembly is a cartridge insert in a one-piece housing (1), with a seal (2) over the whole housing length. An integrated metal spring (2a) is anchored in the seal for the resetting force. A flap disk (3) is centered at the seal, for rotation to give the opening and closing actions through the keyed switch shaft (4). The seal is coaxial to the shaft (4) and forms a recess (5) at the bearing pin end (4a) through a ring shoulder (2b). The recess (5) depth is set so that the required sealing wall thickness (2c) is maintained. A sealing sleeve (6) is a bridge between the housing (1) and the seal, pressed into place.
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