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Reliable water pressure, stable suction performance, corrosion-resistant construction, and automatic operation are essential requirements in modern water supply systems. The EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-Priming Pump with Tank is designed to address these needs in domestic, civil, agricultural, and light commercial applications. Combining a self-priming peripheral pump, an automatic pressure-control system, and an integrated tank, this series provides a practical solution for water transfer, pressure boosting, garden irrigation, well-water lifting, and water tower supply.
Available in motor powers from 0.25 kW to 2.20 kW, the EPS-AZ Series covers a broad operating range. Depending on the model, the pump can deliver a maximum flow of approximately 30 to 115 liters per minute, achieve a maximum head of approximately 30 to 65 meters according to the technical table, and lift water from a maximum suction depth of 9 meters. These specifications make the pump suitable for many applications where a conventional centrifugal pump may require additional priming equipment, external pressure controls, or a separate pressure vessel.
The product is manufactured by Taizhou Edwin Electric Co., Ltd., an integrated pump enterprise with experience in research and development, production, export, and one-stop procurement services. The company’s manufacturing background includes deep well pumps, submersible pumps, domestic booster pumps, circulation pumps, solar water pumps, intelligent booster pumps, and related water-treatment products. This broad product knowledge supports the development of a self-priming pump intended for dependable operation in real-world water systems.
The EPS-AZ Series is an automatic self-priming peripheral pump equipped with a tank and pressure sensor. Its design is intended to provide automatic start and stop control according to water demand. When a user opens a tap, activates an irrigation outlet, or creates a pressure drop in the pipe system, the pump can respond automatically. When demand stops and pressure is restored, the control system can stop the motor, helping reduce unnecessary running time and energy consumption.
Unlike a basic manual pump, the EPS-AZ Series is designed to work as part of a complete domestic or small-scale water-pressure system. Its integrated tank helps reduce the frequency of motor starts, while the automatic pressure sensor allows convenient operation without requiring the user to manually switch the pump on and off. This arrangement is especially useful in houses, water towers, gardens, small farms, workshops, and buildings supplied by storage tanks or wells.
The pump is suitable for clean water and liquids with physical and chemical properties similar to water. Typical applications include household water distribution, garden and allotment irrigation, water tower supply, tank-to-building transfer, well-water lifting, and pressure boosting for small water systems. It can also be used where air may be present in the suction line, provided that the installation follows proper priming, piping, and operating procedures.
The series is described as suitable for both hot and cold water. The stated maximum liquid temperature is +60°C. This allows the pump to handle moderately warm water in appropriate applications, although it should not be treated as a high-temperature industrial pump. Water chemistry, installation conditions, operating frequency, and seal compatibility should always be checked before using the pump with liquids other than clean water.
The EPS-AZ Series is available in eight principal models. The lower-power models use 1-inch inlet and outlet connections, while the higher-power models use 1.5-inch connections. The available range enables users to select a pump according to required pressure, flow, suction distance, pipe size, and power supply conditions.
| Model | Power (kW) | Power (HP) | Inlet/Outlet | Maximum Flow (L/min) | Maximum Head (m) | Maximum Suction (m) |
|---|---|---|---|---|---|---|
| EPS250-AZ | 0.25 | 0.34 | 1 x 1 inch | 30 | 30 | 9 |
| EPS370-AZ | 0.37 | 0.50 | 1 x 1 inch | 40 | 35 | 9 |
| EPS550-AZ | 0.55 | 0.75 | 1 x 1 inch | 50 | 40 | 9 |
| EPS750-AZ | 0.75 | 1.00 | 1 x 1 inch | 55 | 45 | 9 |
| EPS900-AZ | 0.90 | 1.20 | 1 x 1 inch | 55 | 50 | 9 |
| EPS1100-AZ | 1.10 | 1.50 | 1.5 x 1.5 inches | 100 | 60 | 9 |
| EPS1500-AZ | 1.50 | 2.00 | 1.5 x 1.5 inches | 110 | 60 | 9 |
| EPS2200-AZ | 2.20 | 3.00 | 1.5 x 1.5 inches | 115 | 65 | 9 |
The horsepower value for the 0.75 kW model is presented above as approximately 1.00 HP, which is the normal conversion of 0.75 kW. The original product data contains a likely typographical inconsistency for this value. Purchasers should confirm the final nameplate information before ordering, especially when preparing electrical protection, replacement parts, or regulatory documents.
The maximum values in the table are performance limits rather than guaranteed operating points under every installation condition. Actual flow and pressure depend on pipe length, pipe diameter, elevation, fittings, valves, water level, suction-line configuration, voltage, frequency, and the operating point on the pump curve. A correct selection should therefore consider the required flow at the required head rather than relying only on maximum figures.
One of the most important advantages of the EPS-AZ Series is its self-priming configuration. A standard non-self-priming pump generally requires the suction pipe and pump chamber to be filled with water before operation. If air enters the suction line, the pump may lose prime and require manual intervention. A self-priming pump is designed to remove air from the suction system more effectively during startup, making it better suited to installations connected to tanks, wells, underground reservoirs, or water towers.
The stated maximum suction height is 9 meters. This figure represents the vertical distance between the pump and the water surface under suitable conditions. In practical installations, the achievable suction height may be lower because of atmospheric pressure, water temperature, pipe friction, air leakage, valve resistance, and the presence of bends or restrictive fittings. A shorter suction line with a large enough diameter normally provides more reliable starting and better flow.
Self-priming capability offers a clear practical advantage over many basic surface pumps. Users do not need to install the pump directly below the water source in every situation. The pump can be positioned near a building, control point, or water distribution manifold, provided that the suction conditions remain within the design limits. This flexibility can simplify installation and reduce the need for additional structures.
However, self-priming does not mean that the pump can operate without water indefinitely. The pump must be installed and initially filled according to the appropriate procedure. The suction pipe must be airtight, and a suitable foot valve or check valve may be required to retain water in the system. Running dry can damage the mechanical seal, increase temperature, and reduce service life.
The integrated tank and pressure sensor make the EPS-AZ Series more convenient than a manually operated pump. The system is intended to recognize pressure changes and respond to water demand. For example, when a tap is opened, the pressure drops and the pump starts. When the tap is closed, the system reaches its pressure setting and the pump stops.
This automatic function is useful in domestic water supply systems where several outlets may be used at different times. It can also support small irrigation networks, greenhouse watering points, garden hose systems, and water tower distribution. Users do not need to reach the pump each time water is required, which improves convenience and reduces the possibility of operating the pump at an unsuitable time.
The tank has an additional system benefit. Without a tank, a pump may start every time a small amount of water is drawn. Frequent starts can increase electrical and mechanical stress, particularly in applications involving small leaks, toilet cisterns, or brief tap operation. A pressure tank provides a limited reserve of pressurized water and can reduce unnecessary cycling. This may help improve motor life and make system pressure more stable.
Automatic pump systems should still be installed with appropriate protective devices. A pressure sensor is not a replacement for dry-run protection, overcurrent protection, surge protection, or correct earthing. Where the water supply is intermittent, a low-water cut-off or additional dry-run controller may be advisable. The final control arrangement should be selected according to the site conditions and local electrical standards.
EPS-AZ Series Automatic AISI304 Shaft Hot and Cold Water Self-priming Pump with Tank
The EPS-AZ Series uses a combination of cast iron, brass, stainless steel, aluminum, polymer, and other selected materials. Each material serves a particular purpose in the hydraulic or motor assembly. This combination provides a balance between mechanical strength, corrosion resistance, manufacturing practicality, and cost control.
The pump body and support are identified as HT200 cast iron components. Cast iron provides good structural rigidity and vibration resistance. A rigid pump body helps maintain the alignment between the motor shaft, impeller, mechanical seal, and bearing system. It also gives the pump a solid foundation for domestic and light commercial use.
The product information specifies special anti-rust treatment for the cast iron body and support. Surface treatment is important because a pump may be exposed to humidity, condensation, splashing water, and outdoor environmental conditions. Although surface treatment does not make cast iron completely immune to corrosion, it can improve resistance when the pump is installed and maintained correctly.
The impeller is made from brass. Brass is widely used in water-pumping equipment because it offers a useful combination of strength, dimensional stability, corrosion resistance, and compatibility with clean-water applications. Compared with some ordinary ferrous impeller materials, brass can provide better resistance to rust in water-contact areas.
The brass impeller also supports smooth restarting after periods of inactivity. Pumps installed in seasonal houses, gardens, agricultural areas, or backup water systems may remain unused for extended periods. A rust-resistant impeller can reduce the risk of sticking and help maintain dependable startup performance when the pump is brought back into service.
The AISI 304 stainless steel shaft is a central feature of the product. The shaft transfers motor torque to the impeller and is exposed to demanding mechanical and environmental conditions. Stainless steel is particularly valuable in areas where the shaft may contact water or moisture.
AISI 304 stainless steel helps protect the water-contact area from rust and supports long-term mechanical integrity. It is a practical material choice for clean-water pumps because it provides good general corrosion resistance without the higher cost associated with more specialized stainless-steel grades. The shaft should still be used within the stated water-quality and temperature limits, since aggressive chemicals, chlorides, or abrasive particles may require different materials.
The mechanical seal is specified as carbon and ceramic. Mechanical seals are critical components because they prevent water from entering the motor while allowing the shaft to rotate. Carbon and ceramic sealing faces are commonly used in clean-water pumps and can provide reliable sealing when the pump is operated with suitable liquids and within the recommended temperature range.
Seal life depends on water quality, pressure, temperature, alignment, operating frequency, and protection against dry running. The maximum liquid temperature is listed as +60°C. Operating above this limit may accelerate seal wear, affect elastomer performance, or cause overheating. Correct priming and adequate water flow are therefore essential.
The motor case is identified as aluminum, while the motor cover is listed as cast iron. Aluminum can help reduce weight and support heat dissipation, making the pump easier to handle during installation. The cast iron cover contributes structural strength in the motor assembly.
The cooling fan is specified as PP, or polypropylene, and is protected by a fan cover. The fan supports motor cooling during operation. Adequate ventilation around the pump is necessary to ensure that heat can escape. Enclosing the pump in a small, unventilated cabinet or placing it close to a hot wall can raise the ambient temperature and reduce motor life.
The motor is designed with durable copper wiring. Copper windings provide good electrical conductivity and are widely used in quality pump motors. Efficient winding design can help reduce electrical losses, support stable motor performance, and improve the relationship between input power and hydraulic output.
The product includes high-efficiency C&U bearings. Bearings support the rotating assembly and reduce friction between moving components. Smooth bearing operation helps reduce vibration, noise, and mechanical wear. Bearing quality is especially important in a peripheral pump because the impeller and shaft rotate at high speed to create the required pressure.
Single-phase models include a built-in thermal protector. This device is intended to interrupt or protect the motor when abnormal temperature conditions occur, such as overload, blocked rotation, poor ventilation, excessive ambient heat, or low-voltage operation. Thermal protection is an important advantage in domestic applications because users may not have industrial motor-control equipment installed.
The motor insulation rating is Class F. Class F insulation is commonly associated with a higher permissible thermal capability than basic insulation classes, although actual operating temperature must remain within the manufacturer’s limits. The stated maximum ambient temperature is +40°C. Operation in hotter surroundings may require derating, improved ventilation, or a different motor specification.
The protection rating is IP44. This means the motor enclosure is designed to provide protection against solid objects of a specified size and against splashing water from various directions. IP44 does not mean that the motor is waterproof or suitable for immersion. The pump should be installed in a dry, protected location where rain, flooding, direct water jets, and severe condensation are avoided.
In homes supplied by low-pressure municipal lines, storage tanks, or rooftop reservoirs, the EPS-AZ Series can be used to improve water delivery. It may supply bathrooms, kitchens, washing areas, outdoor taps, and other household points. The correct model depends on the number of outlets, building height, required pressure, and pipe layout.
The automatic control system is convenient for daily use. Once properly installed, the pump can start when water is needed and stop after demand ends. The tank helps smooth operation when water use is intermittent. For larger homes or buildings with many simultaneous outlets, the required flow should be calculated carefully because a small domestic pump may not supply all outlets at the same time.
The pump is specifically described as suitable for water tower applications. It can transfer water from a lower tank, well, or supply reservoir to a water tower, or it can boost pressure from a tower to a distribution network, depending on the system arrangement. The installer must determine the total dynamic head, including vertical elevation and pipeline losses.
Water tower systems often require reliable automatic control because demand changes throughout the day. A pressure sensor and tank can help manage operation in smaller systems. For larger towers or high-demand installations, additional level controls, float switches, non-return valves, and control panels may be needed.
The pump is suitable for garden hoses, sprinklers, small drip-irrigation systems, and allotment watering. It can draw water from a storage tank or shallow well and deliver it through an irrigation network. The maximum flow and pressure should be compared with the requirements of the selected sprinkler heads and irrigation zones.
For irrigation systems, filtration is important. Sand, leaves, algae, and other particles can obstruct the impeller, wear the mechanical seal, or interfere with the pressure sensor. A suitable inlet strainer or filter can improve reliability, provided that the filter is correctly sized and cleaned regularly.
The 9-meter maximum suction specification makes the pump suitable for certain shallow-well installations. The actual water level must be measured during pumping, not only when the well is static. If the water level falls below the practical suction limit, the pump may lose prime or deliver insufficient flow. Deeper wells generally require a submersible pump rather than a surface self-priming pump.
Small workshops, guesthouses, agricultural buildings, service rooms, and light commercial premises may use the EPS-AZ Series for water transfer and pressure boosting. The pump can support cleaning points, wash stations, utility sinks, and low-volume process-water systems where the liquid is clean and the temperature remains within the rated range.
For commercial installations, a professional assessment is recommended. Important factors include duty cycle, water quality, electrical supply, expected daily operating time, required redundancy, and local safety regulations. The product is a practical surface pump for many small systems, but it should not be used as a substitute for a specially engineered industrial pump when the application involves abrasive, corrosive, flammable, or heavily contaminated liquids.
The EPS-AZ Series offers several practical advantages compared with basic manual surface pumps and conventional non-self-priming peripheral pumps. These advantages should be considered in relation to the actual installation rather than treated as universal benefits for every pumping application.
A basic pump often requires a separate pressure switch, control box, pressure vessel, or manual operator. The EPS-AZ configuration integrates automatic control components with the pump and tank, reducing the number of external parts required for a small domestic water system. This can simplify installation and make the system easier for end users to operate.
Compared with a standard surface pump, the self-priming design is better suited to systems where air may enter the suction line or where the pump is located above the water source. It can reduce the frequency of manual re-priming, although correct piping and initial filling remain essential.
The AISI 304 stainless steel shaft and brass impeller provide a stronger corrosion-resistance profile than many low-cost pumps that rely on ordinary steel in water-contact areas. This is particularly relevant in humid installations, seasonal systems, and applications where the pump may remain unused for periods of time.
The range from 0.25 kW to 2.20 kW enables users to select a relatively small pump for light domestic duties or a more powerful model for higher flow and head requirements. A broad range also allows distributors, installers, and project suppliers to serve different customers using a consistent product family.
Product reliability depends not only on individual materials but also on the manufacturing process used to assemble, test, and control the complete pump. The manufacturer’s experience across submersible pumps, deep well pumps, booster pumps, circulation pumps, and solar pumping systems provides a wider technical foundation than a company focused on only one basic pump type.
Taizhou Edwin Electric Co., Ltd. was founded in 2008 and operates as an integrated manufacturing enterprise. Its stated capabilities include independent research and development, mass production, and global export. These capabilities are important for a pump product because successful international supply requires more than assembly. It involves product design, component sourcing, production planning, inspection, packaging, documentation, and after-sales coordination.
Independent research and development allows the manufacturer to adapt hydraulic structures, motor specifications, control arrangements, and materials to different market requirements. The EPS-AZ Series reflects this integrated approach by combining hydraulic pumping, self-priming performance, automatic control, and a pressure tank in one product platform.
Product development should include hydraulic testing, motor temperature evaluation, pressure testing, leakage inspection, electrical safety verification, and long-duration operation checks. These activities help identify design weaknesses before products enter mass production. They also support continuous improvement when feedback is received from distributors, installers, and end users.
A reliable pump requires consistent control of key components. The pump body must maintain accurate dimensions and sufficient wall thickness. The impeller must be balanced and correctly positioned. The stainless steel shaft must meet dimensional and material requirements. Bearings, seals, windings, capacitors, pressure sensors, and protective devices must be compatible with the motor and hydraulic assembly.
Material selection in the EPS-AZ Series shows attention to common failure points. The brass impeller helps resist rust, the AISI 304 shaft protects the rotating water-contact area, the carbon/ceramic mechanical seal supports leakage control, and the thermal protector addresses motor overheating. Proper incoming inspection is necessary to ensure that these advantages are maintained consistently across production batches.
Mass production can provide advantages in manufacturing efficiency, component availability, process repeatability, and delivery planning. When production procedures are standardized, workers can follow defined assembly steps and inspection points. Repeated production also helps the engineering team identify recurring issues and improve tooling, fixtures, and process controls.
For international customers, mass production capacity is particularly important. Builders, distributors, agricultural suppliers, and project contractors may require repeated deliveries of the same model. A stable production system helps maintain consistent specifications and reduces the risks associated with irregular or small-batch manufacturing.
Pump assembly requires correct alignment between the motor, shaft, bearing, impeller, mechanical seal, pump body, and support. Improper assembly can lead to vibration, noise, leakage, reduced flow, or premature bearing wear. A professional manufacturing process should include controlled tightening, seal inspection, electrical testing, rotation checks, and hydraulic performance verification.
Testing should be matched to the product’s intended application. Hydraulic tests can confirm whether the pump reaches appropriate pressure and flow values. Electrical tests can identify insulation faults, winding problems, and abnormal current. Thermal tests help confirm that the motor and protective system operate safely. Pressure and leakage checks are especially important for automatic pumps because the system may remain pressurized when the motor is stopped.
The company established Taizhou Haipai Import and Export Co., Ltd. and Golden Falcon Industrial Co., Ltd. to support procurement planning, order tracking, cross-border delivery, and foreign trade services. This structure can be valuable for international buyers who require more than a product quotation.
One-stop procurement support may include model selection, packaging coordination, documentation, shipment planning, order communication, and assistance with mixed product requirements. Because the company supplies several pump categories, customers may be able to coordinate domestic booster pumps, deep well pumps, submersible pumps, circulation pumps, solar pumps, and accessories through a broader supplier relationship.
The pump should be installed on a solid, level base capable of supporting the equipment and resisting vibration. The installation location should be dry, ventilated, accessible for inspection, and protected from flooding. Adequate space should be left around the motor and control components so that heat can dissipate and maintenance can be performed safely.
The suction pipe should be as short and straight as practical. Its internal diameter should not be smaller than the pump inlet unless the manufacturer specifically approves a different arrangement. Excessively narrow suction piping can increase friction loss and reduce the achievable suction height. Long horizontal suction pipes, sharp elbows, leaking joints, and undersized filters can all reduce performance.
All suction connections must be airtight. Even a small air leak may prevent proper self-priming and cause unstable flow. Threaded connections should be sealed using appropriate materials, but excessive sealant must not enter the pump or restrict the pipe. A foot valve or check valve may be installed at the suction end to help keep the line filled with water.
Before the first startup, the pump chamber and suction line should be filled according to the operating instructions. The discharge valve may be opened gradually during commissioning. The system should be checked for leakage, abnormal noise, vibration, excessive current, and pressure instability. If the pump fails to prime, it should be switched off and the suction line, water level, foot valve, and air-tightness should be inspected.
The discharge pipe should be properly supported so that its weight is not transferred to the pump casing. A non-return valve may be useful in systems where reverse flow could cause pressure shocks or loss of prime. Isolation valves can make maintenance easier, but they should never be closed while the pump is operating unless the system has been specifically designed for that condition.
Electrical installation should be completed by a qualified person. The voltage and frequency must match the motor nameplate. Correct earthing, a suitable circuit breaker, overload protection, and cable sizing are essential. Outdoor installations require additional protection against rain and water spray, even though the motor protection rating is IP44.
Routine maintenance can extend pump life and preserve performance. The suction filter should be inspected and cleaned at suitable intervals, especially when the water source contains sediment, organic matter, or suspended particles. A blocked filter can create excessive suction loss and cause cavitation or poor priming.
The pump should be checked for leakage around the mechanical seal, flange, threaded connections, and tank assembly. Minor external leakage should not be ignored because it can worsen over time and may allow water to reach electrical parts. Unusual noise, vibration, rapid cycling, reduced pressure, and overheating are signs that inspection may be required.
Seasonal installations should be protected from freezing. Water expands when it freezes and can damage the pump body, tank, seals, and pipes. If the pump will remain unused in freezing conditions, the system should be drained or protected according to the installation design.
The pressure tank and automatic control system should be inspected if the pump starts and stops too frequently. Possible causes include a leaking pipe, an incorrectly adjusted pressure setting, insufficient tank pre-charge, a defective check valve, or inadequate water supply. Electrical components should be disconnected before any service work is undertaken.
Only compatible replacement parts should be used. The mechanical seal, bearing, capacitor, pressure sensor, impeller, and electrical protection components must match the model and operating requirements. Using an unsuitable part may reduce performance or create a safety risk.
Model selection should begin with the required flow rate. Estimate how much water must be delivered at the same time, not simply the total daily water consumption. A house with one tap open requires a different capacity from a building with multiple showers, irrigation zones, and utility outlets operating together.
The next consideration is total head. Total head includes vertical lifting height, required pressure at the outlet, friction losses in pipes and fittings, and any additional equipment such as filters, valves, or water-treatment units. A pump that reaches its maximum head at zero flow may not deliver useful flow at the required operating pressure. The operating point should be checked against the manufacturer’s pump curve whenever available.
Suction conditions are equally important. Measure the vertical distance from the water surface to the pump inlet, and consider whether the water level changes during operation. A suction height close to the 9-meter limit may produce less reliable performance than a shorter lift. For deeper wells, a submersible pump is normally more appropriate.
Pipe size should be selected to match the pump inlet and outlet and the required flow. The EPS250-AZ through EPS900-AZ models use 1-inch connections, while the EPS1100-AZ through EPS2200-AZ models use 1.5-inch connections. Reducing pipe size unnecessarily can increase friction and lower system efficiency.
Finally, check the available electrical supply. Single-phase motors are convenient for homes and small facilities, but the voltage, frequency, starting current, cable length, and circuit protection must be suitable. Buyers should confirm nameplate data, connection standards, tank specifications, and control settings before final purchase.
The pump is intended for clean water or liquids with physical and chemical properties similar to water. It is not designed for abrasive slurry, seawater, fuel, flammable liquids, or heavily contaminated wastewater unless a specific modified version has been approved. Water quality should be checked before use.
It is described as suitable for hot and cold water, with a maximum liquid temperature of +60°C. This makes it suitable for moderately warm water applications. It should not be used for steam, boiling water, or higher-temperature industrial liquids without written confirmation of material and seal compatibility.
Self-priming means that the pump is designed to remove air from the suction system during startup more effectively than a conventional non-self-priming surface pump. The suction line must still be airtight, and the pump normally requires initial filling with water. Self-priming does not permit dry running.
The maximum stated suction height is 9 meters, so the pump is intended for shallow-well conditions within that limit. Actual performance may be lower because of pipe friction, water temperature, air leakage, and changing water levels. Deeper wells generally require a submersible deep-well pump.
Yes. The EPS-AZ Series includes a pressure sensor and tank designed for automatic start and stop operation. The pump responds to pressure changes caused by water demand. Correct adjustment, sufficient water supply, and a properly sealed pipe system are necessary for stable operation.
The tank stores a limited amount of pressurized water and helps reduce unnecessary motor starts during small or intermittent water demands. It can also help stabilize pressure. The tank does not replace correct pipe design or eliminate the need for maintenance.
The product information specifies a built-in thermal protector for the single-phase motor. This protection helps respond to excessive temperature caused by overload or abnormal operating conditions. However, the pump should still be installed with suitable electrical protection and should not be operated with blocked ventilation or inadequate voltage.
IP44 indicates protection against specified solid objects and splashing water. It does not mean that the motor can be submerged or exposed to direct water jets. The pump should be installed in a dry, protected, and ventilated location.
The pump body and support are listed as HT200 cast iron, the impeller is brass, the shaft is AISI 304 stainless steel, and the mechanical seal uses carbon and ceramic materials. The motor case is aluminum, the motor cover is cast iron, and the cooling fan is PP.
Select the model according to the required flow, total head, suction lift, pipe size, operating frequency, and electrical supply. The most powerful pump is not always the best choice. Oversizing may cause excessive pressure, higher energy use, or frequent cycling, while undersizing may lead to insufficient flow and continuous operation.
Yes. It is suitable for many garden, allotment, and small agricultural irrigation systems using clean water. Filters, correct pipe sizing, and zoning are recommended. Sprinkler and drip systems should be checked to ensure that their flow and pressure requirements match the selected pump.
Switch off the pump and check whether the pump chamber and suction pipe contain water. Inspect the foot valve, suction joints, pipe cracks, filter blockage, water level, and valve positions. Do not allow the pump to run dry while troubleshooting.
The EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-Priming Pump with Tank provides a versatile solution for domestic, civil, agricultural, and small commercial water systems. Its main benefits include self-priming operation, automatic pressure control, an integrated tank, brass impeller, AISI 304 stainless steel shaft, carbon/ceramic mechanical seal, copper motor winding, thermal protection, and a broad model range from 0.25 kW to 2.20 kW.
Compared with a basic manual surface pump, the series offers greater operating convenience and a more complete pressure-boosting arrangement. Compared with a conventional non-self-priming pump, it provides improved flexibility for installations connected to tanks, water towers, and shallow wells. Its performance is supported by an integrated manufacturing organization with experience in research and development, mass production, export management, and multiple pump categories.
Correct selection and installation remain essential. Users should evaluate the actual operating point, total head, suction height, water temperature, water quality, pipe dimensions, electrical supply, and required duty cycle. When used within its design limits and maintained properly, the EPS-AZ Series can provide dependable automatic water transfer and pressure support for a wide range of everyday water applications.
1. Product technical information for the EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-Priming Pump with Tank.
2. Manufacturer-provided model, power, flow, head, suction, material, and motor specification data.
3. General principles of centrifugal and peripheral pump selection, installation, priming, and maintenance.
4. General guidance on electric motor insulation classes, enclosure protection ratings, thermal protection, and water-pump safety.
5. General engineering practices for domestic water boosting, shallow-well suction systems, tank installations, and small irrigation networks.
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