Page 151 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Open the gate valve and tighten the gland nut until the packing is compressed sufficiently to stop the water
escaping from the gland nut. (Fig 11)

TASK 3 : Stop cock
1 Clean the pipe joints free from rust and dirt.
2 Loosen the union and separate the pipe joint.

3 Loosen and remove the pipe nipple from stop cock.
4 Loosen and remove the stop cock from the pipe joint.
5 Dismantle the stop cock parts one by one systematically.
6 Clean all the parts properly.

7 Check the parts of thread, if worn out replace with correct one. If it is in good condition clean it properly and
use it.
8 Check the washer, whether it is damaged or in good condition. If damaged, change the washer.
9 Reassemble the parts to ensure in good condition.

10 While assembling the dismantled parts last one should fit first and vice versa sequence.
11 If the stop cock is in damaged condition, change it with new stop cock.
12 Fit the stop cock to one end in lengthy pipe in the dismantled place pipe joint properly.
13 Fit the pipe nipple to other end of stop cock properly.
14 Next fit the union with pipe nipple properly.

15 Apply pressure and test the pipe joints and stop cock. Check for leakage, if any to ensure proper working.
• The arrow, embossed on stop cock is to be in the direction of flow of water
• Check the direction of arrow before fitting stop cock.

• Don't over tighten stop cock, and other pipe fittings.
• Use proper tools for dismantling and assembling pipe fittings.

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CITS : C G & M - Fitter - Exercise 85