Light vertical multistage centrifugal pump introduced

Application:
The RCDL / RCDLF is a versatile product that delivers a wide range of media from tap water to industrial liquids, adapts to varying temperatures, flow rates and pressure ranges, CDL for non-aggressive liquids and CDLF for mildly corrosive liquids.

â˜… water supply: water filtration and transportation, water district partition, in charge supercharged, high-rise building pressurized.

â˜… industrial booster: process water systems, cleaning systems, high pressure washing system, fire fighting system.

â˜… industrial liquid transport: cooling and air conditioning systems, boiler feed water and condensing systems, machine tools , acid and alkali.

â˜… water treatment: ultrafiltration system, reverse osmosis system, distillation system, separator, swimming pool.

â˜… Irrigation: Farmland irrigation, sprinkler irrigation, drip irrigation.

Working conditions:

â˜… thin, clean, non-flammable and does not contain solid particles or fibers of the liquid.

â˜… liquid temperature: room temperature -15 â„ƒ to +70 â„ƒ hot water +70 â„ƒ to 120 â„ƒ

â˜… maximum ambient temperature: +40 â„ƒ

â˜… Elevation: up to 1000m

Light vertical multistage centrifugal pump

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Pump:

Â Â Â RCDL / RCDLF is a non-self-priming vertical multistage centrifugal pump equipped with a standard motor . The motor shaft is connected with the pump shaft through a pump head coupling. The pull rod bolt fixes the pressure cylinder and the overcurrent unit to the pump head and the water inlet and outlet sections Between the pump inlet and outlet in the same line. The pump can be configured according to the needs of intelligent protection device, the pump dry, lack of phase, overload and other effective protection.

Motor:

â˜… motor is fully enclosed, air-cooled two-pole standard motor.

â˜… protection level: IP55

â˜… insulation level: F

â˜… standard voltage, 50H _z : 1X220-230 / 240V, 3X200-220 / 346-380V, 3X220-240 / 380-415V, 3X380-415V

Minimum inlet pressure NPSH:

Â Â Â Cavitation may occur if the pump pressure is lower than the vapor pressure of the delivered liquid. To avoid cavitation, ensure that there is a minimum pressure on the pump inlet side. The maximum suction H [m] can be calculated as follows:

H = P _b Ã— 10.2-NPSH-H _f -H _v -H _s

Where: P _b = barometric pressure (barometric pressure settable to 1 bar), P _b = system positive pressure in bar in the closed system NPSH = net positive tip [m] (available from NPSH curve On the pump possible to read the maximum flow). Conduit entrance loss H _f = [m]. H _v = steam pressure [m]. = H _s = minimum safety margin 0.5m head. If the calculated H is positive, the pump can be operated at maximum suction. If the calculated H is negative, there must be a minimum inlet pressure H head.

Parallel operation:

Â Â Â It may be more advantageous to replace multiple pumps in parallel with more than one pump

â˜… In the variable flow system, to adapt to the system required operating point.

â˜… increase the possibility of water supply, because the pump failure, only affect the system part of the flow.