Metso XT/XA Series User Manual

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K seats:
 Place the back seal (63) into the body counterbore.
Then place the seat (7) into the body counterbore,
see Fig. 26.
 Lock the seat into the body using a special tool. See
Section 4.9.3 for instructions.
 Place the back seal (63) in the ball seat (7); see Fig. 26.
Place the seat in the body cap (2). Lock the seat with
a special tool. See Section 4.9.3 for instructions.
H seats:
 Place the back seal (63) into the body counterbore.
Then place the seat (7) into the body counterbore,
see Fig. 27.
 Lock the seat into the body using a special tool. See
Section 4.9.3 for instructions.
 Place the back seal (75), back-up ring (76), spring (62)
and the seat (25) into body cap, Fig. 27.
G seats:
 Place the back seal (63) into the body counterbore.
Then place the seat (7) into the body counterbore,
see Fig. 28.
 Lock the seat into the body using a special tool. See
Section 4.9.3 for instructions.
 Place the back seal (75), back-up ring (76), spring (62)
and the seat (25) with back seal (64) into body cap,
see Fig. 28.
J seats:
 Install back seals (63) as per Table 2 to both body
halves. The seal on top of stack shall always be 1 mm
thick and the others are either 1 mm or 0.4 mm.
 Set back seal pressing tool on top of seal stack as
seen in Fig. 30.
 Compress back seal stack with pressing tool using
forces found on the Table 3. Avoid damaging sealing
faces of the flange during compression. Let the com-
pression of the back seal stack effect about 5 min-
utes. Repeat same procedure to the other body half.
 Set body seat to its cavity.
 Add bearings, spline driver, locking pin, shaft and
key.
 Install the ball.
 Install the gland packing. Use V-ring set (if available)
or graphite packing without any tightening of pack-
ing rings.
 Set the other seat on top of the ball.
 Add body gasket.
Fig. 26 K seats
Fig. 27 H seats
TA
2” - 8”
GA
1” - 8”
63
63
7
7
63
63
BodyInsert / Body cap
TA
1” - 1 1/2”
2” - 8”
GA
1” - 8”
63
63
63
7
7
7
25
62
25
62
25
62
75
76
75
76
75
76
BodyInsert / Body cap
Fig. 28 G seats
Fig. 29 J seat
Table 2 Seal thicknesses
Size 1 mm 0.4 mm
1" 2 pcs. 3 pcs.
1H" 5 pcs. 3 pcs.
2" 7 pcs. 5 pcs.
3" 12 pcs. 5 pcs.
4" 16 pcs. 1 pc.
6" 23 pcs. 4 pcs.
8" 28 pcs. 2 pcs.
BodyInsert / body cap
64
637
76
75
62
25
63725
62
76
75
64
TA
GA
7
63763
Body cap Body

Metso XT/XA Series Specifications

General

Brand	Metso
Model	XT/XA Series
Category	Control Unit
Language	English