Waukesha Cherry-Burrell Brand W71/W72RS Sch. 5 Mix Proof Valves
Maintenance
08/2018
95-03091
Page 31
Upper Stem Tef Flow
®
P Seat Installation
W71 Upper Stem Tef Flow
®
P Seat Installation
1. Place the PTFE installation base (Figure 31, item 1; Figure
32, item B) over the stem, making sure that the chamfered
side rests on top of the stem plug and the flat side of the base
faces away from the stem plug.
2. Take the aluminum seat installation tool (Figure 31, item 2;
Figure 32, item A) and install the aluminum locator pin
(Figure 31, item 3) by threading it into the seat installation
tool, orienting it so that the locator pin fits into the seat plug
and the correct size shoulder matches the seat that is being
installed.
3. Place the new Tef Flow
®
P Seat in the aluminum seat
installation tool (Figure 31, item 2; Figure 32, item A),
orienting the seat so that the side with the chamfered edge is
facing into the installation tool as shown in Figure 32.
4. Carefully set the stem on the seat and installation tool so that
the locating plug fits into the plug stem.
5. With the stem facing down, carefully set the stacked
components onto an arbor press.
6. Set the protective installation tool puck (Figure 31, item 5)
over the top of the locating pin and installation tool.
7. With the arbor press, apply even pressure to the top of the
installation tool puck (Figure 31, item 5) until the seat snaps
into place on the stem plug.
8. Carefully remove the stem stack from the arbor press,
removing the installation tools in reverse order.
9. Inspect the seat for correct orientation. The seat ring should
spin freely on the plug if it is installed correctly.
10. Inspect the stem and stem plug for damage. Clean up any
minor scratches with an emory cloth, if needed.
Figure 31 - Upper Stem Tef Flow
®
P
Seat Installation (Kit # )
* for 2" W71 ODT valves only
VA100-810
4*
5
3
1
a
2
Figure 32: Tef Flow
®
P Seat
VA100-381a
A
B
Summary of Contents for W71
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