Page 152 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

TASK 4 : Seat Valve
1 Close the seat valve by turning the hand wheel clock wise.
2 Remove the nut with a spanner and lift the wheel.
3 Remove the gland nut from the bonnet by turning it in the anticlock wise direction.
4 Remove the stuffing gland.

5 Clean out the old packing in the stuffing box.
6 Cut a standard asbestos rope to make a new packing.
7 Assemble and spindle gate to the bonnet.
8 Assemble the hand wheel and tighten the hand wheel nut.
9 Open the seat valve and tighten the gland nut until the packing is compressed sufficiently to stop the water
escaping from the gland nut.
Removal of spindle set and gate part
1 Hold the spanner at bonnet neck.

2 Loosen the bonnet two or three turn, again loosen the bonnet 2 or 3 turn.
Note
• Dont over tight the gland nut.
• Filling the gasket should not be too much.

• Clean the disk gate with emery sheet.

TASK 5 : Non return value

1 Shut off the water by closing the main valve.
2 Remove the cap from the valve body. (Fig 1)

3 Remove the hinge pin and take out the disc.
4 Separate the disc from the hinge. (Fig 2)

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CITS : C G & M - Fitter - Exercise 85