+86 13816508465
Aug. 25, 2026
The Stream SJLM is an automatic self-priming booster pump designed for domestic water supply, tap water pressure boosting, hot water pipeline boosting, and garden irrigation. With a compact integrated structure, efficient hydraulic design, built-in flow switch, and support for liquid temperatures up to 80°C, the SJLM provides a practical solution for residential and light commercial water pressure applications.
Low or unstable water pressure can affect everything from showers and faucets to water heaters and irrigation systems. In homes with insufficient municipal pressure, water outlets may deliver weak flow, particularly when several taps are used at the same time. Properties supplied from wells or storage systems may also require a reliable pump to move water and maintain usable pressure.
The Stream SJLM Self-Priming Booster Pump is designed to address these everyday water supply challenges. Combining self-priming capability with automatic flow control, the pump can respond to water demand without requiring users to manually switch the pump on and off during normal operation.
Available across a power range of 130 to 1100 W, with maximum flow ratings from 30 to 100 L/min and maximum heads from 25 to 50 meters depending on the selected model, the SJLM series provides multiple performance options for different residential and light commercial water systems.
The Stream SJLM is an electric automatic booster pump developed for both cold and hot water applications. It combines a self-priming pump design with automatic control to provide convenient water transfer and pressure boosting in domestic and similar installations.
Self-priming capability is particularly valuable where the pump needs to draw water rather than receive water under positive inlet pressure. Once properly installed and initially primed, a self-priming pump is designed to evacuate air from the suction line and establish water flow more easily than a conventional non-self-priming centrifugal pump.
The SJLM is suitable for several common water supply requirements, including drawing domestic water from wells, boosting tap water pressure, increasing pressure in hot water pipelines, and supplying water for gardens and vegetable irrigation.
Its automatic operation is supported by a flow switch, allowing the pump to respond to water demand and reducing the need for continuous manual operation.
One of the defining characteristics of the SJLM series is its self-priming design.
In many domestic water systems, the water source is positioned below the pump. Examples include shallow wells and certain water storage arrangements. In these situations, the pump must be capable of establishing suction before normal water transfer can begin.
The SJLM's self-priming configuration makes it suitable for these applications and expands the range of installation possibilities compared with pumps that require a continuously flooded suction inlet.
For homeowners and installers, this provides greater flexibility when designing water supply systems around existing wells, tanks, pipelines, and building layouts.
The SJLM incorporates a flow switch for precise automatic control.
In a typical domestic water system, water demand changes constantly. A user may open a shower, faucet, or irrigation outlet for a short period and then close it again. A manually controlled pump would require the user to start and stop the pump every time water is required.
The flow switch allows the SJLM to respond automatically to water usage, making everyday operation significantly more convenient.
This automatic control is especially useful for residential pressure boosting, where the pump needs to operate as part of the water supply system rather than as a manually activated standalone machine.
A major advantage of the SJLM is its ability to operate with fluid temperatures up to 80°C.
This expands its potential applications beyond conventional cold-water pressure boosting. The pump can also be used in suitable hot water pipeline boosting applications where the operating temperature remains within its rated working conditions.
This makes the SJLM relevant to residential water systems where insufficient pressure affects hot water delivery as well as cold water supply.
Installers should always confirm that the actual system temperature, pressure, and other operating conditions remain within the pump's specifications before installation.
The SJLM series incorporates an efficient hydraulic design intended to provide practical flow and pressure performance across a range of domestic applications.
Depending on the selected model, the series offers maximum flow ratings from 30 to 100 L/min and maximum head ratings from 25 to 50 meters.
This range allows buyers and installers to select a pump according to the actual water demand and pressure requirements of the installation instead of relying on a single pump size for every application.
Space is an important consideration in residential pump installations. Pump equipment may need to fit into utility rooms, well areas, garden installations, or other locations where available space is limited.
The SJLM is designed with a compact and integrated structure, helping simplify installation while reducing the overall footprint of the pumping system.
For contractors and installers, compact construction can make positioning and servicing the pump easier, particularly in retrofit projects where the existing plumbing layout cannot be substantially modified.
The SJLM combines a cast iron pump body with an aluminum motor housing and brass impeller.
The cast iron pump body provides mechanical strength for everyday water supply applications, while the aluminum motor housing offers a practical balance between durability and weight.
The brass impeller provides good dimensional stability and corrosion resistance for appropriate clean-water applications.
The pump also uses a steatite ceramic and metalized carbon mechanical seal, providing a sealing interface between the hydraulic section and motor assembly during operation.
The SJLM is specified for continuous rated duty.
This is an important consideration in water supply applications where pump operating periods can vary significantly according to household consumption, irrigation demand, or building usage.
When the pump is correctly selected and operated within its specified working conditions, continuous-duty capability provides greater flexibility for applications requiring extended operating periods.
Low municipal water pressure is a common problem in residential buildings. It can result in weak showers, slow-filling appliances, and poor water delivery at faucets located farther from the incoming water supply.
The SJLM can be used to boost tap water pressure in suitable residential systems, helping provide stronger and more practical water delivery throughout the property.
Its automatic flow control makes it particularly convenient for this application because pump operation can respond to actual water demand.
Private houses can have widely varying water supply configurations. Some receive water directly from a municipal network, while others rely on wells or independent water storage systems.
The SJLM combines self-priming capability, automatic operation, and multiple performance options, making it suitable for a variety of private residential water supply installations.
Depending on the selected model and system design, it can support household faucets, bathrooms, kitchens, water heaters, and other everyday water outlets.
The self-priming design makes the SJLM particularly relevant to water supply systems where domestic water needs to be drawn from a well.
In these installations, selecting the correct pump requires consideration of suction conditions, vertical lift, required delivery head, pipe diameter, and expected water demand.
When the installation falls within the pump's operating capabilities, the SJLM can provide a compact solution for transferring well water into a domestic water supply system.
Insufficient pressure is not limited to cold-water systems. Some properties may also experience weak hot water delivery because of pipeline resistance or other system conditions.
With a maximum rated fluid temperature of 80°C, the SJLM can be used for suitable hot water pipe pressure boosting applications.
This capability differentiates it from pumps intended exclusively for cold-water service and gives installers additional flexibility when addressing residential water pressure problems.
Gardens and vegetable plots require sufficient water flow and pressure for hoses, sprinklers, and other irrigation outlets.
The SJLM can be used for garden watering and vegetable irrigation, particularly where water must be drawn from a well or other suitable water source before being delivered to the irrigation network.
The range of available SJLM models allows pump capacity to be matched more closely to different irrigation requirements.
The SJLM is also suitable for appropriate water pressure applications in business buildings.
Small commercial properties may experience many of the same water pressure problems found in homes, particularly where multiple outlets operate at the same time.
A correctly selected booster pump can help improve water delivery while automatic control reduces the need for manual pump management during normal building operation.
Correct pump selection requires both hydraulic performance and operating conditions to be considered. The Stream SJLM series is designed to operate within the following limits:
Parameter
Specification
Maximum Flow Range | 30–100 L/min |
Maximum Head Range | 25–50 m |
Power Range | 130–1100 W |
Maximum Ambient Temperature | 40°C |
Maximum Fluid Temperature | 80°C |
Maximum Pressure | 10 bar |
Duty | Continuous Rated |
Automatic Control | Flow Switch |
The materials used in a booster pump influence durability, hydraulic performance, and suitability for different water supply environments.
Component
Material / Specification
Pump Body | Cast Iron |
Motor Housing | Aluminum |
Impeller | Brass |
Insulation | Class B/F |
Mechanical Seal | Steatite Ceramic / Metalized Carbon |
A conventional surface pump can move water effectively, but the user may still need separate control equipment or manual switching depending on the installation.
An automatic self-priming booster pump combines several useful functions in one solution: the ability to draw water under suitable suction conditions, increase delivery pressure, and respond automatically to water demand.
Conventional Water Pump
Stream SJLM
May require manual operation or separate control | Flow switch provides automatic control |
Not every pump is self-priming | Self-priming pump design |
May be intended only for cold water | Fluid temperature up to 80°C |
Separate configurations may be needed for different demands | Series covers 130–1100 W and 30–100 L/min |
Because the SJLM is a series rather than a single fixed-performance pump, selecting the correct model should be based on the actual hydraulic requirements of the installation.
The most important factors include required flow rate, required delivery pressure or head, suction conditions, pipe length and diameter, elevation difference, water temperature, and the number of outlets that may operate simultaneously.
Choosing a pump simply because it has the highest available power is not necessarily the best approach. An oversized pump may provide more performance than the system requires, while an undersized pump may be unable to maintain adequate flow or pressure during peak demand.
For distributors and project buyers, matching the SJLM model to the actual duty point provides a more reliable basis for pump selection.
The SJLM is designed for applications including domestic water supply from wells, tap water pressure boosting, hot water pipeline pressure boosting, garden watering, vegetable irrigation, private houses, and suitable business building water systems.
Yes. The SJLM uses a flow switch for automatic control, allowing the pump to respond to water demand during normal operation.
Yes. The SJLM is designed as a self-priming booster pump, making it suitable for applications where the pump needs to draw water under appropriate suction conditions.
The SJLM is rated for fluid temperatures up to 80°C and is designed for suitable cold and hot water applications, including hot water pipe pressure boosting.
Depending on the selected model, the SJLM series has maximum flow ratings ranging from 30 to 100 L/min.
The maximum head range across the SJLM series is 25 to 50 meters, depending on the model selected.
The SJLM series covers a power range from 130 to 1100 W, allowing different models to serve different water supply and pressure boosting requirements.
The SJLM is designed for a maximum system pressure of 10 bar.
Yes. Garden watering and vegetable irrigation are among the intended applications of the SJLM series.
The SJLM uses a brass impeller together with a cast iron pump body and aluminum motor housing.
The Stream SJLM Self-Priming Booster Pump combines automatic operation, self-priming capability, hot and cold water compatibility, and a broad performance range in a compact integrated design.
With maximum flow ratings from 30 to 100 L/min, maximum heads from 25 to 50 meters, and power options from 130 to 1100 W, the SJLM series gives installers and buyers the flexibility to select a pump according to different residential and light commercial water supply requirements.
Its flow switch enables convenient automatic operation, while the ability to handle fluid temperatures up to 80°C expands its use from conventional cold-water boosting to suitable hot water pipeline applications.
For private houses, well water supply, tap water boosting, gardens, vegetable irrigation, and appropriate business building applications, the Stream SJLM provides a versatile automatic water pressure solution designed for reliable everyday operation.
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No.17 XeDa Jimei Ind. Park, Xiqing Economic Development Area, Tianjin, China
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+86 13816508465
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