Pipe appuretenances, valves and fittings

1. 9.1 Valves
Devices used to control the flow of water, regulate pressures, release air, prevent back flow etc
(a)Sluice or gate or cutoff valve
(b)Reflux or check or non-return valve
(c) Safety or pressure relief valve
(d) Air valve or air relief valve
(e) Drain or scour or blow off valve : Ordinary sluice valve to remove silt deposit
(f) Butterfly valve and globe valveManesh Malla

2. FIRE HYDRANT:
Devices used for tapping water from mains for the fire extinguishing, street washing,
watering gardens, flushing sewer lines etc.
Provided at all road junctions & every 100–300 m apart.
For tapping water, the hose is connected to the hydrant and if necessary the engine is
used to increase head.
It should be cheap, easily connectable & detachable to the hose pipe and able to give
sufficient water. It may be of post type or flush type.Manesh Malla

3. FittingsManesh Malla

4. Manesh Malla

5. Manesh Malla

6. Manesh Malla

7. Manesh Malla

8. Manesh Malla

9. Manesh Malla

10. Manesh Malla