Light Vertical Multistage Centrifugal Water Pump

Product Item：XRICDL2-2
Technical parameters: Flow range: 0.5m³/h~240m³/h 
Lift range: 4m~305m Power: 0.37kw~110kw
Application: water plant filtration and conveying, secondary water supply, flow water system, high pressure flushing system, fire protection system, boiler water supply, air conditioning system, ultrafiltration system
Application: water supply industry pressurized HVAC water treatment
Material: Stainless steel

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Description

Light Vertical Multistage Centrifugal Pump

CDL/CDLF is a kind of vertical non-self primingmultistage centrifugal pump, which is driven by a stan-dard electric motor. The motor output shaft directly con-nects with the pump shaft through a coupling. The pres-sure-resistant cylinder and flow passage components arefixed between pump head and inlet &outlet section withstay bolts. The inlet and outlet are located at the pumpbottom at the same plane. This kind of pump can be equ-ipped with an intelligent protector to effectively preventit from dry-running, out-of-phase and overload.

Motor

●Full-enclosed air-blast two-pole standard motor

●Protection class: IP55

●Insulation class: F

●Standard voltage:60Hz: 3 X 200-230/346-400V

3x220-255/380-440V

3x220-277/380-480V

Application

CDL /CDLF is a kind of multifunetional products.It can be used to convey various medium from tap waterto industrial liquid at different temperature and with di-fferent flow rate and pressure. CDL type is applicable toconveying non-corrosive liquid, while CDLF is suitablefor slightly corrosive liquid.

●Water supply: Water filter and transport in Waterwor-ks, boosting of main pipeline, boosting in high-rise bu-ildings.

●Industrial boosting: Process flow water system, cleani-ng system, high-pressure washing system, fire fightingsystem.

●Industrial liquid conveying: Cooling and air-conditio-ning system, boiler water supply and condensing system,machine-associated purpose, acids and alkali.

●Water treatment: Ultrafiltration system, reverse osmo-sis system, distillation system, separator, swimming pool.

●Irrigation: Farmland irrigation, spray irrigation, drip-ping irrigation.

Operation Conditions

●Thin, clean, non-flammable and non-explosive liquidcontaining no solid granules and fibers.Liquid temperature:

●Normal temperature type: -15°C~+70°C,Hot water type: -15°C~+120°C

●Ambient temperature: up to +40°C

●Altitude:up to 1000m

Curve illustration

Performance curve

Following conditions are suitable for the performa-nce curves shown bellow:

1, All curves are based on the measured values of 60Hz:constant motor speed 3500 rpm or 3540rpm.

2, Curve tolerance in conformity with ISO9906 Annex A.

3, Measurement is done with 20°C air-free water, kinematic viscosity of Imm2/sec.

4, The operation of pump shall refer to the performanceregion indicated by the thickened curve to prevent over-heating due to too small flow rate or overload of motordue to too large flow rate.

Minimum inlet pressure NPSH

In case that the pressure in pump is lower than thesteam pressure used to convey liquid, the cavitations willoccur. To avoid cavitations, a minimum pressure at theinlet side of the pump shall be guaranteed. The maximumsuction stroke can be caleulated with following formula:H=PbX10.2-NPSH-Hf-Hv-HsPb-atmosphere pressure [bar]

(can be set as lbar)

In a closed system, Pb means system pressure [bar]NPSH-Net 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 rununder the max. Suction stroke H.In case the caleulated result H is negative, a deliveryhead of min. Inlet pressure is necessary.

Operation in parallel

●Connecting several pumps in parallel running will ben-efit much more than running a single large pump.Applicable to different working states necessary in avariable flow system.

●Increasing the possibility of water supply when thepump is in failure. Because in case of pump failure, onlypart of the system flow is effected.

Section drawing