SICCA
19
Annexure I
DO’s
1. Observe the safety instructions.
2. Employ skilled, trained and experienced personnel to handle the valve.
3. Align the pipe correctly in position before mounting a valve on line.
4. Use a correct type of flange gasket.
5. Ensure the correct direction of flow on the valve.
6. Ensure the valve is un-pressurised before any work is carried out.
7. Decontaminate the valves in contact with hazardous fluids, before any work is carried out.
8. Lubricate the valves periodically.
9. Protect the threads with a metal/leather jacket if the working conditions are abrasive.
10. Allow clearance for raising stem type valve to open fully.
11. Flush the valves in fully open condition to remove foreign material like welding flux, spatter, slag, dust etc. to avoid
damage
of seats.
12. Check shut-off function by repeatedly opening and closing before commissioning.
13. Check the frequency and voltage of actuators to match with the line voltage and frequency.
14. If gasket leak is observed, tighten gasket bolts crosswise evenly in a clock wise direction.
15. After attaining the full operating pressure and temperature, check and if necessary, tighten the gland nut / Body-bonnet
nuts.
16. When a gate valve is fully opened, screw it down 1/4 turn to prevent sticking.
17. During storage position the valve such that the stem is upright.
18. For globe valve follow the instructions carefully for direction of installation.
DON’Ts
1. Don’t expose the valves to dust, sand, building material etc. during storage.
2. Don’t use unauthorised spares.
3. Don’t remove end protective covers before installation.
4. Don’t use valve hand-wheels as foot holds.
5. Don’t exceed the limits stated in technical documentation.
6. Don’t store the valve in open condition.
7. Don’t attempt to dismantle the pressurised valve.
8. Don’t use a valve to pull an unsupported and badly aligned pipes into position.
9. Don’t leave a gate valve in crack open condition.
10. Don’t use a gate valve for throttling.
11. Don’t force a gate valve closed with a wrench.
12. Don’t use a flat disc globe valve for start-up / vent application.
13. Once the valve is installed and commissioned do not tamper the torque & limit switches in case of valve with electrical
actuator.
Summary of Contents for SICCA GLS Series
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