Samson GRAPHITE M32 Instrukcja Użytkownika Pobierz pdf (Strona 9)

3. Place the gasket (1.2) onto the valve

body. Then insert the complete bonnet

into the valve body.

4. Align the flange (5.4) and tighten the

nuts (1.1) according to the tightening

torques specified in the table on the

right.

5. Tighten the coupling nut (5.1) accord-

ing to the tightening torques specified in

the table on the right.

6. With nominal sizes DN 15 to 50,

thread the lock nut (6.2) and stem con-

nector nut (6.1) onto the upper end of

the plug stem until there is a 50-mm

gap between the upper edge of the

bel-

lows assembly (5) and the upper edge

of the stem connector nut (6.1) in the

closed valve position.

4.2 Replacing the seat and plug

When replacing the seat and/or plug, it is

recommended that the sealing ring (5.3) at

the top of the bellows housing and the gas-

ket (1.2) at the bottom of the bellows hous-

ing be additionally replaced.



To replace the plug

(3), proceed as follows:

Follow the steps as described in chapter

4.1, except replace the old plug with a

new one.



To replace the seat

(2), proceed as follows:

Follow the steps as described in chapter

4.1, except replace the old seat with a

new one. To unthread the seat (2), use

an appropriate seat wrench (refer to the

table on the right). Lubricate the thread

and sealing cone of the new seat (lubri-

cant order no. 8150-0119) and screw

in.

DN 15 to 25

1/2 to 1"

32 to 50

11/2 to 2"

65 to 80

21/2 to 3"

Seat wrench

order no. 9932-3330 1280-3009 9110-2467

Tightening torque

±

10%

Seat thread M32 x 1.5

120 Nm

M58 x 1.5

500 Nm

M90 x 1.5

1050 Nm

Coupling nut

(5.1)

80 Nm

Body nuts

(1.1)

M10

10 Nm

M12

30 Nm

M16

90 Nm

EB 8131/8132 EN

9

Maintenance  replacing parts

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