🔍 Key Concepts

• Location of sliding piston within a purifier bowl assembly • Difference between bowl gaskets (static seals) and piston seals (dynamic seals) • How the upper vs lower parts of the piston are positioned relative to the water operating chamber

💭 Think About

• Look at where label H is in relation to the moving sliding piston: is it attached to a moving part or a fixed bowl part? • Is the seal at H separating the water-operating space from above or from below the piston? How would that affect whether it is called upper or lower? • Compare H with any other seals or gaskets shown lower down in the water chamber. Which one would logically be the counterpart (upper vs lower)?

✅ Before You Answer

• Verify whether the component at H moves with the piston or stays fixed with the bowl • Confirm if H is the uppermost seal associated with that piston, or if there is another seal below doing the opposite job • Make sure you distinguish between a seal that closes the chamber bowl and one that specifically seals the sliding piston itself