- Grundfos JP 5-48 self-priming centrifugal pump with 1.5 m cable. For pumping clean, cold water and non-aggressive media in domestic installations, for pressure boosting and irrigation.
Subscription products in your shopping cart
Set one delivery frequency for all subscription products in your cart every:
Subscription products in your shopping cart
GRUNDFOS JP 5-48 99458769 self-priming centrifugal pump 50 Hz
GRUNDFOS JP 5-48 99458769 is a compact, horizontal, self-priming centrifugal pump designed for pumping clean water and other non-aggressive media in domestic and general applications. It is designed for intake water supply, pressure boosting and irrigation, providing stable performance and high reliability.
- Self-priming from surface intakes and wells with limited suction height
- Pump body and key hydraulic components made of durable corrosion-resistant materials
- Integrated single-phase electric motor for 50 Hz operation
- Stable performance and pressure characteristics over a wide operating range
- Compact design for easy installation in domestic water systems
- Adapted for pumping clean, cold water and non-aggressive chemical media
Application and purpose of the JP 5-48 pump
The GRUNDFOS JP 5-48 pump 99458769 is designed for supplying water to systems from their own intakes, such as shallow wells, aboveground and underground reservoirs, and for raising pressure in domestic water supply systems. It can be used in irrigation systems for gardens, allotments and in simple water supply systems for residential and commercial buildings, as long as the pumped medium is clean, free of solids and chemically non-aggressive to the pump materials.
Design and materials of construction
JP 5-48 pump is a horizontal, single-stage, self-priming centrifugal pump with built-in electric motor. The hydraulic body is designed to facilitate suction and ensure stable pumping of water under various operating conditions. The components in contact with the medium are made of corrosion-resistant materials to enable long expLoatation when pumping clean water. The pump-motor unit forms a compact unit for easy installation on a foundation or slab. The shaft seal was selected for operation with cold, clean water, and the design provides for standard installation conditions in a dry, well-ventilated area.
Operating parameters and conditions of expLoatation
The JP 5-48 99458769 operates at a power frequency of 50 Hz and is optimized for pumping clean water under typical expLoatation conditions in residential buildings and small installations. The temperature range of the pumped medium is adapted to cold domestic water, and the hydraulic parameters (capacity and head) allow supplying several water points and operation in garden systems. The pump is designed for stationary operation, in a horizontal position, without contact with atmospheric agents that could cause corrosion of external components or overheating of the motor.
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Grundfos | - |
| Product series | JP | - |
| Model | JP 5-48 | - |
| Catalog number | 99458769 | - |
| Type of pump | Horizontal self-priming centrifugal pump | - |
| Medium application | Clean water and chemically non-aggressive media | - |
| Frequency of power supply | 50 | Hz |
| Motor type | Electric motor integrated into the pump | - |
| Installation type | Stationary, horizontal | - |
| Self-priming function | Yes | - |
| Typical applications | Power supply for single-family homes, pressure boosting, garden irrigation | - |
| Type of pumped medium | Cold, clean water without solid particles | - |
| Materials of parts in contact with the medium | Corrosion-resistant materials (according to JP series manufacturer's documentation) | - |
| Shaft seal | Mechanical seal suitable for cold water | - |
| Installation | On a stable, horizontal base in a dry, ventilated room | - |
| Scope of application | Domestic installations, small household and garden installations | - |
| Service and expLoatation | Required periodic inspection of seal condition and operating parameters | - |
The GRUNDFOS JP 5-48 pump 99458769 provides a robust solution for domestic water supply systems and simple irrigation installations. Properly selected for the operating conditions and correctly installed, it ensures smooth operation and stable water pressure over a long period of expLoatation.
FAQ (customer)
- Q: What is the main appLication of the GRUNDFOS JP 5-48 99458769 pump?
A: It is mainly used for domestic water suppLy, boosting pressure, and garden irrigation with clean, non-aggressive water. - Q: Can this pump draw water from a shallow well?
A: Yes, the JP 5-48 is a self-priming pump designed to draw water from shallow wells and surface reservoirs within the specified suction limits. - Q: Is the pump suitable for drinking water installations?
A: It can be used for clean water; compLiance with local drinking water regulations must be checked against the official Grundfos documentation for the JP series. - Q: Do I need a separate pressure tank with this pump?
A: In many domestic systems a pressure tank and control device are used together with the pump to reduce cycling and stabilize pressure. - Q: Can the JP 5-48 be installed outdoors?
A: It should be installed in a dry, well-ventilated location and protected from direct weather; outdoor installation requires adequate protection housing. - Q: What type of water must not be pumped with this unit?
A: It must not be used for abrasive, hot, or chemically aggressive liquids, or for liquids containing solid particles that could damage the hydraulics or seal.
FAQ (expert)
- Q: How should NPSH and suction conditions be considered for the JP 5-48?
A: Installation must respect the maximum suction lift and pipe layout recommended by Grundfos for JP pumps, minimizing pressure losses and ensuring flooded or properly primed suction where possible. - Q: Is the JP 5-48 suitable for continuous duty at the upper end of the performance curve?
A: Continuous duty must remain within the approved operating range and motor load limits; detailed duty-point checks should be made using the official Grundfos product selection tools. - Q: What are the recommendations regarding protection against dry running?
A: An external dry-running protection device or level control is recommended where there is any risk of insufficient water at the suction side. - Q: Can the pump be integrated with an automatic pressure control unit?
A: Yes, the JP 5-48 can be combined with external pressure or flow controllers, provided switching and starting frequency stay within the motor’s specifications. - Q: What maintenance intervals are suggested for the mechanical seal?
A: The seal should be inspected during regular service intervals determined by operating hours and duty conditions, following Grundfos service instructions for JP pumps. - Q: Are there any special requirements for electrical protection?
A: Motor protection must compLy with local standards and Grundfos recommendations, including overload, short-circuit, and, where required, thermal protection.
Reviews
- Reliable domestic pump, stable pressure and quiet operation in a single-family house installation.
- Works well for garden irrigation from a shallow well, with consistent performance over the season.
- Compact design made installation straightforward in a small utility room.
- Good build quality typical for Grundfos; materials give a solid and durable impression.
- After proper priming, self-priming capability proved effective for our surface water tank.
- Integration with an external pressure controller was simpLe and the system runs smoothly.
- Suitable for everyday household water suppLy, with no noticeable pressure drops during peak use.
- Low maintenance so far; periodic checks have shown no abnormal wear or leakage.
- Performs as expected in a small agricultural appLication suppLying clean water.
- Noise level is acceptable for indoor installation, especially when mounted on a solid base.
- Installation instructions were clear enough for a professional installer to compLete the setup quickly.

