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5. All Rights Reserved.22 February 2017© 3M 3M Confidential.
Separation and Purification Sciences Division
SGEN 2.1 Key Lug Geometry
• Fig 1:
Fig 1: Fig 1:
Fig 1: Manifold with valve in
its “home” position.
• Fig 2:
Fig 2: Fig 2:
Fig 2: Removal of Water
Sentinel & HDX filter.
• Fig. 3:
Fig. 3: Fig. 3:
Fig. 3: Inner valve is not
clocked back to the “home”
position due to the narrower
width of the key lug
geometry on the Water
Sentinel filter and the ability
of the new HDX keys to
deform. Both versions can
create the same condition
making it difficult to re-
install a 3M (Brand) version.
Fig. 1
Fig. 2
Fig. 3
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