1000GPM Horizontal Split Case Fire Pump

1000 GPM Horizontal Split Case Fire Pump Centrifugal Water Pump

UL/FM Fire Pump Performance Requirements:

The maximum net pressure for a fire pump shall not exceed 140 percent of rated head.

( Hs ≤ 140% x H)

Inlet pressure less than 047.7 kpa. A pump shall develop not less than 65 percent or rated

total head when discharging at 1-1/2 times rated. (H 1.5 Q ≥ H x 65%)

A test is to be conducted with a positive suction pressure sufficient to achieve the maximum

brake-horsepower(KW input)required by the pump. ( P ≥ BHP)

The shut off head shall not be less than 99% of the maximum head.

UL / FM Pump Focus on safety and reliability (short-time running)

1:Working point is different.

Fire pump :highest efficiency point is near 1.5Q

-- No cavitation, no influence on water absorption performance

-- NPSHr curve is not required

2: Matching power is different

Fire pump :

-- Matching power ensures no overload at any flow rate

3: Hydraulic design is different

Fire pump :

-- The power curve is required to have an inflection point

-- The front end of curve is flat, after 1.5Q, curve fall steep

4: Strength design is different

Fire pump :(Shut off head + 50m) x 2

5: Seal form is different

Fire pump : Soft packing in principle

Service: