General
The pumping equipment described in this catalogue is designed to provide a pressurized supply of water for Fire Fighting systems. As a fire-extinguishing agent, water acts by cooling the source of combustion, and can be applied by various methods to ob tain the greatest degree of heat removal. Systems such as sprinklers, water curtains, hydration columns, fire hydrants, etc. all require a water supply permanently available from a pressurized network.
In the event of a fire, either the opening of a fire hydrant or the automatic initiation of a fixed sprinklers installation usually initiates the demand for water. The sudden fall in pressure in the fire system rising main causes the main pumps to automatically start and provide the required flow of water to the points of application.
Most systems have a small, electrically driven auxiliary or jockey pump, which automatically maintains the pressurization of the fire fighting system and compensates for small leakages in the system. The auxiliary or jockey pump operates automatically under pressure switch control. The main pumps are designed to provide the supply of pressurized water to the Fire Fighting System; these can be initiated either manually or automatically as required. A sudden drop in pressure causes the automatic starting of the main pumps to supply water to the fire system rising main. The main fire pumps may only be stopped manually. The types of pump used for this application are mainly:
1. Horizontal end suction pump with a radial discharge.
2. Horizontal axially split case pumps.
3. Vertical, wet well pumps-shaft driven with conventional motors.
For example, we would typically recommend horizontally mounted pumps for installations, which have a positive suction head, and when a suction lift is required (i.e. when the source of the water supply is located below pumping equipment), we would suggest vertical wet well pumps.
Optionally, the equipment can be built to comply with other Standards such as NFPA-20, etc.
The equipment is manufactured under a Quality System certified by Bureau Veritas Quality Imitational (BVQI) to meet the requirements of ISO 9001.
Main Pumps
Equipment
with horizontal pumps
The pumps
are manufactured in accordance with DIN
24255. The wearing parts in contact with the pumped water are manufactured in
corrosion resistant materials the impeller and wear rings are made of bronze
and the pump shaft is stainless steel. The semi-elastic spacer coupling is
fitted to both electric and diesel driven pumps; this allows the impeller
assembly to be removed without the need to move the pump casing or the driver. The
design of the pump casing is such that an air release device is unnecessary.
Equipment with Split Case
pumps
The pumps can be fitted as the main
pump for fire fighting equipment. Their main area of application is for large flows
and operating pressures up to 15 bar. These are horizontal centrifugal pumps
with axially split cases. The suction and discharge flanges are casted as part
of the bottom half of the casing, allowing easy access to the rotating parts
and avoiding disconnecting of the suction and discharge pipes during
maintenance works. Both pump types can be driven by either electric motor or
diesel engine as required. The CEPREVEN and UNE-EN 12845 version is fitted with
a semi-elastic spacer coupling to facilitate maintenance of the pump set. These
pumps are fitted with an automatic air release valve on top of upper half
casing.
Equipment with vertical turbine pumps
Where the water level of the source
supply results in a suction lift, preventing the use of horizontal pumps,
BOMBAS IDEAL can offer a wide range of vertical turbine shaft driven pumps V
type with motors mounted at ground level.
