Trạm bơm đôi KRAL DKC / DLC / DS/L
Two pumps provide more than double the advantages.
Cost-effective solution for double the flow rate and for maximum operational reliability.
There are critical applications in which a second screw pump is prescribed for security. With KRAL pump stations you have a cost-effective and space-saving solution with which you can prevent motor standstill, production interruptions and heating failures. Maintenance work can also be carried out during operation without pump standstill.
A further advantage of KRAL double stations is the possibility of parallel operation of the two 3-screw pumps. This means that the flow rate can be doubled, but the space requirement and effort are considerably less than with the installation of two single positive displacement pumps.
Typical applications are booster modules of oceangoing ships, and burner stations in marine and industrial applications. Maximum reliability is required. The most common operating mode is therefore that one screw pump is running and the other is switched off (standby).
- Delivery rate: 5 to 280 l/min.
- Max. differential pressure: 40 bar.
- Temperature range: -20 °C to 180 °C.
- Housing: Nodular cast iron EN-GJS-400.
- Triple screws: Steel, nitrided.
- Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
- ATEX: II 2 GD b/c group II, category 2.
- Heating: Electrical, media or steam.
- Seal type: Mechanical seal standard or hard material.
- Available with magnetic coupling.
In the case of a ship, the failure of the fuel screw pump in the booster module means that the engine comes to a standstill. If the flame goes out in a burner, a production process will be interrupted or a heating system will fail. Such applications require security. For maintenance, the primary screw pump can be switched to the standby screw pump, without interruption.
- Heating variants for heating highly viscous fluids.
- Two-way valve for switching between liquids.
- Pressure-retaining valve for constant feed pressure.
- Pressure switch for monitoring pressure.
- Differential pressure display for monitoring the loading of the strainer.
- Temperature measurement of the fluid.
- Monitoring leaked oil.
- Strainer cover protection to prevent accidents caused by oil being sprayed out.
- Reliable solution for many applications.
- High operational reliability.
- Liquid switching without complex piping.
- Doubling of the flow rate.
- Lower costs for design, piping and control.
- Simple installation.
- Service without pump standstill in the system.
- For different pressure ranges, as required.
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