L2_WATER SUPPLY EQUIPMENT Flashcards
used whenever the water supply at its natural pressure cannot be directly piped to a building, tank or reservoir
Pumps
3 classes of pumps
a. Lifting water by suction to the level of a pump situated above the source.
b. Raising the water by forcing it to an elevation above a pump situated in the source.
c. Both lifting the water to the pump by suction and in addition forcing the water to an elevation above the pump.
Consist of a piston traveling up and
down within a cylinder
LIFT PUMP
used to deliver water at a point
higher than the position of the
pump itself.
FORCE PUMP
class of pumps in which the piston moves· to and from either horizontally or vertically.
RECIPROCATING PUMP
Types of reciprocating pump
- Power pump
- Direct Acting
• Known as double or single acting
piston pumps. Adapted to all
purposes where the suction lift,
is not over 22 ft. (6. 70 mts) at
sea level.
Horizontal Reciprocating Pumps
for suction lifts of less than 22
feet (6. 70 mts) are composed of
3 vertical cylinders placed side
by side
Vertical Reciprocating Pump
used when the water level of the source is more than 22 feet (6. 70 mts) below the ground
DEEP WELL PLUNGER PUMP
posses moving parts without valves, revolving around an axis and centrifugal action is utilized in delivering the water under pressure
CENTRIFUGAL PUMP
automatic and require no motor since they depend for operation upon water hammer that is the surging back and forth in a pipe when suddenly brought to rest
HYDRAULIC RAMS
e collection of water without consideration
of pressure, or for storing water under air pressure or under a static HEAD for future distribution by pneumatic or gravity means.
TANKS
Materials used for tanks
• wood
• steel
• Galvanized iron (G.I.)
• Reinforced concrete
• polyvinyl chloride(PVC)
vertical distance from the source to the outlet
Head of water
large enough to contain at least one days’ supply for the entire building in
case the City main is temporarily shut off.
Suction Tank
normal water pressure from public water main for low rise buildings.
UPFEED SYSTEM
air pressure from suction tank for tall buildings which cannot be reached by normal water pressure
PNEUMATIC TANK
operates the pump to make up this water when the level has become low enough to actuate the starting switch.
FLOAT VALVE
by gravity from overhead tanks and
are supported either by structural
frames or on the roof decks. Fixtures
are below the gravity Tank.
DOWNFEED SYSTEM