2014 hot sale cost-effective CDL-A light vertical centrifugal pump

Specifications

2014 hot sale cost-effective CDL-A light vertical centrifugal pump 

Pump Features

1,Low energy consumption

   pumps have an extra-high efficiency obtained by the most up to data technical       designs,moulding and accurate set up

2,Steady operation

   A steep flow curve allows large head changes with minimal rate of flow changes

3,Noiseless operation

  Material used,low tip speed of the rotating parts and its ample supports,insure noise and vibration free running

4,Safety

  A coupling safety screen avoid accidents

5,Cose-effective

    PPO impeller

APPLICATIONS

 Water filter and transport in Waterworks, boosting of main pipeline, boosting in high-rise buildings. 
Industrial boosting: Process flow water system, cleaning system, high-pressure washing system, fire fighting system 
Industrial liquid conveying: Cooling and air-conditioning system, boiler water supply and condensing system, machine-associated purpose, acids and alkali 
Water treatment: Ultrafiltration system, reverse osmosis system, distillation system, swimming pool, separator 
Irrigation: Farmland irrigation, spray irrigation, dripping irrigation 

OPERATING LIMITS PUMP

Water or liquid pumped must be chemically and mechanically non-aggresive.

Maximum temperature of pumped liquids:60°c(140°F)

Maximum running time with close delivery outlet:2 min

PARAMETERS

Electric motor

1.Full-enclosed air-blast two-pole standard motor.
2.Protection class: IP55
3.Insulation class: F
4. Standard voltage: 60Hz

    3x200-230/346-400V 
   3x220-255/380-440V 
   3x220-227/380-480V

Minimum inlet pressure NPSH
In case that the pressure in pump is lower than the steam pressure used to convey liquid, the cavitations will occur. To avoid cavitations, a minimum pressure at the inlet side of the pump shall be guaranteed. The maximum suction stroke can be calulated with following formula: H=Pb x 10.2-NPSH-Hf-Hs
Pb=atmosphere pressure [bar] (can be set as 1bar)
In a closed system, Pb means system pressure [bar]
NPSH=Nct positive suction head [m]
(It can be read out from the point of possible max. flow rate shown on NPSH curve)
Hf=Pipeline loss at the inlet [m]
Hv= Steam pressure [m]
Hs= Safety margin=Minimum 0.5m delivery head
If the calculated result H is positive, the pump may run under the max. Suction stroke H.
In case the calculated result H is negative, a delivery head of min.Inlet pressure is necessary.

The following figure shows the limitation of pressure and temperature, which shall be in the scope as shown in the figure.

Material CDL/CDLF1,2,3,4