Light vertical multistage centrifugal pump introduced
The RCDL/RCDLF is a highly versatile pump designed to handle a wide range of liquids, from tap water to industrial fluids. It can operate under varying temperatures, flow rates, and pressure conditions. The RCDL model is suitable for non-aggressive liquids, while the RCDLF is ideal for mildly corrosive liquids.
**Applications:**
- **Water Supply:** Ideal for water filtration, transportation, district partitioning, booster systems, and pressurizing high-rise buildings.
- **Industrial Booster:** Used in process water systems, cleaning systems, high-pressure washing, and fire protection systems.
- **Industrial Liquid Transport:** Suitable for cooling and air conditioning systems, boiler feed water, condensing systems, machine tools, and handling acids and alkalis.
- **Water Treatment:** Perfect for ultrafiltration, reverse osmosis, distillation, separation processes, and swimming pools.
- **Irrigation:** Effective for farmland irrigation, sprinkler systems, and drip irrigation.
**Working Conditions:**
- The liquid must be clean, non-flammable, and free from solid particles or fibers.
- Liquid temperature ranges from -15°C to +70°C for cold water, and up to +120°C for hot water.
- Maximum ambient temperature: +40°C.
- Operating elevation up to 1000 meters.
*Light vertical multistage centrifugal pump*
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**Pump Features:**
The RCDL/RCDLF is a non-self-priming, vertical multistage centrifugal pump equipped with a standard motor. The motor shaft is connected to the pump shaft via a pump head Coupling. A pull rod bolt secures the pressure cylinder and overcurrent unit between the pump head and the inlet/outlet sections, ensuring alignment. The pump can be customized with an intelligent protection device to safeguard against dry running, phase loss, and overload conditions.
**Motor Specifications:**
- Fully enclosed, air-cooled, two-pole standard motor.
- Protection class: IP55.
- Insulation class: F.
- Standard voltage options: 1X220-230/240V, 3X200-220/346-380V, 3X220-240/380-415V, 3X380-415V.
- Frequency: 50Hz.
**Minimum Inlet Pressure (NPSH):**
Cavitation may occur if the pump’s inlet pressure falls below the vapor pressure of the liquid. To prevent this, ensure a minimum pressure at the inlet. The maximum suction height (H) can be calculated using the formula:
H = Pb × 10.2 – NPSH – Hf – Hv – Hs
Where:
- Pb = Barometric pressure (set to 1 bar).
- NPSH = Net positive suction head (available from the pump’s NPSH curve).
- Hf = Friction loss in the suction line.
- Hv = Vapor pressure of the liquid.
- Hs = Safety margin (minimum 0.5m).
If H is positive, the pump can operate at maximum suction. If negative, a minimum inlet pressure must be maintained.
**Parallel Operation:**
Using multiple pumps in parallel offers several advantages:
- In variable flow systems, it allows better adaptation to system operating points.
- Increases system reliability, as a single pump failure affects only part of the flow.
- Provides flexibility and redundancy, making it ideal for critical applications.
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