Assembly Instructions And Tools For Seals; Lower Shaft Seal; Ptfe Seal; Seat Seal - SPX FLOW APV DA4 Instruction Manual

APV
APV_DA4_UK-1_102018.indd
Seal
seal lip
13
14
Assembly tool
assembly mandril
disassembly tip
1)
2)
24

13. Assembly Instructions and Tools for Seals

13.1. Lower shaft seal (pos. 13, 14)
For a simple disassembly and assembly of the lower shaft seal (13,
14) the universal tool (ref.-No. 000 51-13-100/17; H171889) can be
used. This tool is especially recommended for valves of the small
series (DN 40-65, 1,5"-3") as access to the lower shaft seal from the
top is impossible as a result of the narrow seat.
Caution!
!
13.2. PTFE seal (fig. 1, 2)
1. Press the PTFE ring (14) into an oval shape.
2. Introduce the PTFE ring (14) from the top using the assembly
tool, the wide side to the front, through the intermediate ring of the
housing into the lower housing (fig. 1).
3. Pull the PTFE ring (14) into a round shape with the assembly
mandril (fig. 2/I) and press it into the groove. Do not knock or beat
(fig. 2/II)!
13.3. Seat seal (fig. 1, 3, 4)
1. Slightly grease the seal (13).
2. Use the assembly tool to insert the seat seal (13) from the top, the
wide side to the front, through the intermediate ring of the housing
into the lower housing ball (fig. 1).
3. Position the seat seal (13) using the groove of the assembly mandril
(fig. 3/I).
4. Press in the seat seal (13) at one spot between the housing flange
and the PTFE seal (14) (fig. 3/II).
5. Slide the assembly mandril around the seat seal (13) to insert the
seal completely into the groove (fig. 4). Make sure the seat seal (13)
fits evenly in the groove.
3)
Do not damage the seal lip of the PTFE seal during
assembly.
To avoid injuries the disassembly tip must be
covered by the assembly mandril if not used.
4)
UK
Double Seat Mix Proof Valve
APV DELTA DA4
Instruction Manual: UK - rev. 1