cistern air nipple

Genuine Grohe 43507000 black rubber connecting nipple. This small but vital adapter bridges the pneumatic air hose to the internal bellows inside your Adagio or DAL cistern. Pro Tip: If your air hose keeps slipping off the bellows or your flush feels weak, this rubber nipple may have perished or stretched. Replacing it ensures an airtight seal for a crisp, reliable flush every time.