Maintenance Waukesha Cherry-Burrell
®
Brand W70 Series Mix Proof Valves
Page 34 95-03087 10/2023
Lower Stem Tef Flow
®
P Seat Installation
W71 Lower Stem Tef Flow
®
P Seat Installation
1. (Applies to 2” valves only) Place the stem sleeve plug (item
3*) into the PTFE installation base (item 1).
NOTE: Item 3* is only required for correct fit on 2" valves.
2. With the lower stem in hand, install the PTFE installation
base (item 1) over the stem, positioning it so that the
chamfered side of the base rests snugly on top of the lower
stem plug. Make sure the flat side of the base faces away
from the stem plug.
3. Invert the stem so that it is oriented with the stem facing
toward the floor, then carefully set the new Tef Flow
®
P seat
onto the stem plug, positioned so that the chamfered angle
faces away from the plug base, and is centered.
4. Carefully place the aluminum Tef Flow
®
P seat installation
tool (item 2) over the seat, so that the matching shoulder
rests snugly over the seat.
5. With the stem facing down, carefully place the stem stack on
an arbor press. Set the protective puck (item 4) on top of the
installation tool.
6. Apply even pressure directly on the protective puck until the
seat snaps onto the stem plug.
7. Carefully remove the stem stack from the press, then remove
the tools in reverse order.
8. Inspect the seat for correct installation. The seat ring should
spin freely on the plug, with the chamfered edge visible.
9. Closely inspect the stem and plug for damage and clean any
small scratches or dings with an emery cloth.
10. Reinstall the lower stem balancer with o-ring seal.
Figure 33 - Lower Stem Tef Flow
®
P
Seat Installation (Kit # 132357+)
* for 2" W71 ODT valves only
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