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Reliable water pressure is essential in homes, farms, workshops, commercial buildings, water towers, and small-scale irrigation systems. In many installations, the water source is not positioned at the same level as the point of use. Air may enter the suction line, the supply pressure may fluctuate, and the pump may need to restart automatically after periods of inactivity. These conditions require more than a basic centrifugal pump. They require a compact, durable, and responsive pumping solution capable of self-priming, maintaining pressure, and operating consistently in demanding everyday applications.
The EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-priming Pump with Tank is designed for these requirements. It combines an automatic pressure-control system, an integrated tank, a self-priming pump structure, corrosion-resistant water-contact components, and a single-phase motor with thermal protection. The result is a practical pressure-boosting and water-transfer unit for domestic and civil water systems.
Available in models from 0.25 kW to 2.20 kW, the series provides a broad operating range for different installation requirements. Depending on the selected model, the pump can deliver maximum flow rates from 30 to 115 liters per minute, maximum heads from 30 to 65 meters according to the technical model data, and suction heights of up to 9 meters. The product is suitable for clean water and liquids with physical and chemical properties similar to water, with a maximum liquid temperature of 60°C.
The EPS-AZ Series is a self-priming peripheral pump equipped with an automatic control arrangement and a pressure tank. Its design is intended to provide water automatically when a tap, irrigation outlet, or household appliance requires flow. Instead of requiring the user to start and stop the motor manually, the pressure-control system responds to changes in the water system and activates the pump when pressure falls.
The integrated tank helps reduce unnecessary motor starts during short or intermittent water demands. This is especially useful in domestic systems where a small amount of water may be used repeatedly throughout the day. By supporting pressure stability and reducing rapid cycling, the tank contributes to smoother operation and can help reduce mechanical and electrical stress on the pump.
The pump is suitable for drawing water from storage tanks, shallow wells, and other sources where the pump must lift water before delivering it to the distribution system. Its self-priming capability is particularly valuable when air is present in the suction pipe or when the pump has been emptied after maintenance. Compared with a conventional non-self-priming pump, a self-priming design can simplify installation and improve convenience in systems where perfect suction-line conditions are difficult to maintain.
The series is also designed for both cold-water and moderately hot-water applications. The stated maximum liquid temperature is 60°C. This makes the pump suitable for certain warm-water transfer tasks, although the actual application should always consider the temperature rating of the complete installation, including pipes, seals, fittings, control components, and the electrical environment.
The EPS-AZ range covers eight motor sizes. This allows a buyer, installer, or project engineer to select a pump according to required flow, vertical lift, pipe size, and operating conditions rather than using one oversized pump for every application.
| Model | Power | Power | Inlet/Outlet | Maximum Flow | Maximum Head | Maximum Suction |
|---|---|---|---|---|---|---|
| EPS250-AZ | 0.25 kW | 0.34 HP | 1 inch × 1 inch | 30 L/min | 30 m | 9 m |
| EPS370-AZ | 0.37 kW | 0.50 HP | 1 inch × 1 inch | 40 L/min | 35 m | 9 m |
| EPS550-AZ | 0.55 kW | 0.75 HP | 1 inch × 1 inch | 50 L/min | 40 m | 9 m |
| EPS750-AZ | 0.75 kW | 1.00 HP | 1 inch × 1 inch | 55 L/min | 45 m | 9 m |
| EPS900-AZ | 0.90 kW | 1.20 HP | 1 inch × 1 inch | 50 L/min | 50 m | 9 m |
| EPS1100-AZ | 1.10 kW | 1.50 HP | 1.5 inch × 1.5 inch | 100 L/min | 60 m | 9 m |
| EPS1500-AZ | 1.50 kW | 2.00 HP | 1.5 inch × 1.5 inch | 110 L/min | 60 m | 9 m |
| EPS2200-AZ | 2.20 kW | 3.00 HP | 1.5 inch × 1.5 inch | 115 L/min | 65 m | 9 m |
The performance values in the table are maximum reference values. Actual flow and pressure will depend on the system curve, pipe length, pipe diameter, elevation, fittings, water temperature, suction conditions, and operating point. A professional selection should therefore compare the required duty point with the pump performance curve rather than relying only on maximum flow or maximum head.
The model range can be divided into two practical groups. The smaller models, from EPS250-AZ through EPS900-AZ, use 1-inch connections and are appropriate for many domestic pressure-boosting, garden irrigation, and small water-transfer systems. The larger EPS1100-AZ, EPS1500-AZ, and EPS2200-AZ models use 1.5-inch connections and are intended for higher flow requirements, larger distribution systems, and more demanding civil or agricultural applications.
A major advantage of this product is its combination of self-priming performance and automatic control. In an ordinary centrifugal pump, air in the suction pipe can prevent the impeller from developing the pressure needed to move water. The operator may need to fill the pump casing and suction pipe manually before every start. This can be inconvenient and can lead to dry running if the procedure is not performed correctly.
A self-priming pump is designed to remove or manage air within the pumping chamber during startup, allowing water movement to begin after the casing has been properly prepared. The stated maximum suction height of 9 meters provides useful capability for lifting water from a lower source, although actual suction performance is affected by altitude, water temperature, pipe condition, foot-valve quality, air leakage, and the distance between the pump and water source.
The automatic operating arrangement is intended to recognize demand within the water system. When an outlet is opened, pressure drops and the pump starts. When the outlet is closed and the required pressure is restored, the pump stops. This is more convenient than manual switching and supports consistent water availability for household taps, garden hoses, small irrigation networks, and water tower distribution.
The pressure tank provides an additional operational benefit. Without a tank, even a brief opening of a tap may cause the motor to start immediately. Repeated starts can increase wear on the motor, bearings, switchgear, and pressure-control components. A correctly sized tank provides a small reserve of pressurized water and helps reduce unnecessary cycling during low-volume demand.
Automatic operation also improves user safety and convenience. The pump can be installed in a system where the water demand changes throughout the day, eliminating the need for constant supervision. This is useful in homes, guesthouses, small farms, workshops, and buildings supplied by a storage tank or water tower.
EPS-AZ Series Automatic AISI304 Shaft Hot and Cold Water Self-priming Pump with Tank
The pump body and support are manufactured from HT200 cast iron and receive special anti-rust treatment. A treated cast-iron structure provides a robust foundation for the pump assembly. It helps the unit resist mechanical stress, vibration, and the pressure changes associated with automatic starting and stopping.
Cast iron is widely used in pump construction because it offers a practical balance between strength, machinability, dimensional stability, and cost. The anti-rust treatment is important because the pump may be installed in humid utility rooms, outdoor pump shelters, agricultural environments, or areas where condensation is common. Proper installation and maintenance remain necessary, but the treated housing provides a stronger defense against surface corrosion than untreated cast iron.
The impeller is made from brass. Brass is well suited to many clean-water pumping applications because it provides good resistance to corrosion and maintains dimensional stability during operation. It also offers a durable surface for the flow passages and supports reliable restart after periods when the pump has not been used.
The shaft is made from AISI 304 stainless steel. This is an important feature because the shaft is located in a water-contact area and is exposed to mechanical rotation, sealing forces, and moisture. AISI 304 stainless steel provides corrosion resistance and helps protect the shaft from rust-related surface damage. A clean and stable shaft surface can also support longer mechanical-seal life and smoother rotation.
The mechanical seal uses a carbon and ceramic combination. Mechanical seals must prevent water from reaching the motor while allowing the shaft to rotate. Carbon and ceramic are commonly used in water-pump sealing systems because they provide suitable sliding properties and wear resistance for clean-water service. Seal performance depends on correct installation, adequate water lubrication, proper alignment, and avoiding dry running.
The motor case is made from aluminum, while the motor cover is identified as cast iron in the materials information. Aluminum can help reduce housing weight and support heat dissipation, while the cast-iron cover contributes to structural durability. The fan is made from PP, a polymer material selected for its lightweight characteristics and suitability for motor-cooling applications.
Other listed components include the pressure sensor, tank, shaft and rotor, ball bearing, stator, capacitor, terminal cover, fan cover, and capacitor holding box. Together, these elements form an integrated automatic pumping package rather than a basic bare pump. The package approach simplifies system design for users who require pressure control and an automatic water supply function in one unit.
The motor uses durable copper wiring. Copper windings provide good electrical conductivity and efficient transfer of electrical energy into mechanical power. The use of copper wiring is especially relevant in a motor that may operate repeatedly during the day, as in domestic booster service or automatic irrigation.
The motor is fitted with high-efficiency C&U bearings. Bearings support the rotating shaft and help maintain alignment between the rotor and stator. Smooth bearing operation contributes to lower vibration, reduced mechanical noise, and stable shaft rotation. It also helps protect the mechanical seal from unnecessary movement caused by shaft runout or excessive vibration.
Single-phase models include a built-in thermal protector. The thermal protector is intended to disconnect or protect the motor when overheating occurs. Overheating may result from overload, insufficient ventilation, blocked flow, low-voltage conditions, repeated starting, high ambient temperature, or mechanical problems. Thermal protection is a valuable safeguard, but it should not be treated as a substitute for correct pump sizing, electrical installation, and routine maintenance.
The insulation rating is Class F. This provides a defined thermal capability for the motor insulation system and supports reliable operation when the motor is exposed to normal operating heat. The protection rating is IP44, which indicates protection against solid objects of a specified size and water splashing from different directions. IP44 is appropriate for many protected indoor or sheltered installations, but the pump should not be submerged or exposed to direct high-pressure water jets.
The stated maximum ambient temperature is 40°C. When the pump is installed in a hot mechanical room, enclosed cabinet, greenhouse, or outdoor shelter, ventilation must be considered carefully. Excessive ambient temperature can reduce motor cooling capacity and shorten component life. The pump should be mounted where air can circulate freely around the motor and where the electrical components remain protected from rain, flooding, and condensation.
Many conventional small pumps are sold as standalone units. They require the installer to purchase and assemble a separate pressure switch, pressure vessel, check valve, and control arrangement. This can increase installation time and create compatibility issues between components.
The EPS-AZ Series integrates the pump, pressure sensor, and tank into one automatic package. This simplifies procurement and reduces the number of separate components that must be selected. It also offers a more compact solution for installations where space is limited.
Some basic booster pumps are sensitive to air in the suction line and require frequent manual priming. The self-priming configuration of the EPS-AZ Series provides an advantage in applications drawing water from tanks, shallow wells, or water towers where air may enter the suction system.
This feature can make the pump more forgiving during startup and after service work. It does not remove the need for correct installation, but it can reduce operational inconvenience compared with a standard non-self-priming design.
Low-cost pumps may use a standard steel shaft that can develop corrosion when exposed to moisture or aggressive water conditions. The AISI 304 stainless-steel shaft in this series offers improved resistance to rust in the water-contact area. This contributes to better long-term reliability and cleaner internal operation.
A brass impeller is a durable choice for clean-water service. It can resist corrosion more effectively than certain low-grade ferrous materials and can maintain its geometry over repeated operating cycles. Its use supports stable hydraulic performance and reliable restarting after inactivity.
The eight available power ratings provide more flexibility than a narrow product range. Users can select a lower-power unit for a small household system or a larger model for high-flow water distribution without changing to an entirely different product family. This is useful for distributors and project contractors who want to standardize procurement while serving different customer requirements.
With a stated maximum liquid temperature of 60°C, the series can serve selected warm-water transfer applications as well as ordinary cold-water duties. A conventional cold-water-only pump may not be suitable for elevated temperatures. However, the installer must confirm that all system components are also rated for the intended temperature.
The pump is designed for practical water systems rather than only specialized industrial installations. Its compact automatic configuration can be applied to houses, small apartment buildings, gardens, allotments, water towers, and civil water-supply systems. This broad application range gives it an advantage over products designed for only one narrow operating environment.
The product is specifically suited to water tower applications. It can draw water from a low-level storage source or support distribution from a tower to points of use. Automatic control helps maintain water availability when demand changes during the day.
For water tower installations, the installer should assess the static elevation, pipe length, required pressure at the highest outlet, and expected simultaneous flow. The selected pump must be able to overcome the total dynamic head, which includes vertical lift and friction losses through pipes, elbows, valves, filters, and other fittings.
In homes, the pump can improve pressure at showers, kitchen taps, washing areas, and other outlets. It is especially useful where municipal pressure is low or where water is supplied from a roof tank, ground tank, or private storage vessel.
The automatic tank arrangement supports convenient household operation. When a tap is opened, the pump responds to pressure demand. When water use stops, the pump stops automatically after restoring system pressure. This provides a more user-friendly experience than a manual pump switch.
Garden irrigation often involves intermittent water use and variable outlet arrangements. A pump may be required to supply sprinklers, hoses, drip systems, or several irrigation zones. The EPS-AZ Series can provide pressure for these applications when the water source is clean and the system is correctly sized.
For drip irrigation, a filter should normally be installed upstream to prevent particles from entering the pump and emitters. For sprinkler systems, the designer should consider the pressure required by the selected sprinkler heads and the flow demand when multiple zones operate simultaneously.
The self-priming design can support shallow-well water lifting up to the stated maximum suction height under suitable conditions. The suction pipe must be airtight, correctly sized, and fitted with an appropriate foot valve or non-return valve where required. The pump is not a replacement for a deep-well submersible pump when the water level is beyond practical suction limits.
The unit can transfer clean water from one tank to another or deliver water from a storage tank to a pressurized distribution network. Its automatic control is useful when the downstream demand is not constant.
Small shops, workshops, guesthouses, offices, and civil facilities may require more pressure than the incoming supply can provide. The larger models in the series can support higher flow rates and larger connection sizes, subject to professional pump selection and local installation requirements.
Taizhou Edwin Electric Co., Ltd., operating under the Edwin Pump name, was founded in 2008. The company is described as an integrated manufacturing enterprise specializing in independent research and development, mass production, and global export. This integrated structure is important because it connects product design, manufacturing, quality management, order coordination, and export service within one business system.
Independent research and development enables the manufacturer to adapt product structures to changing market requirements. The EPS-AZ Series reflects this approach by combining several functions that are often purchased separately: self-priming performance, automatic pressure control, a tank, a single-phase motor, and corrosion-resistant internal components.
Mass-production capability supports consistent availability for distributors, contractors, and international project buyers. A manufacturer with experience in volume production can organize procurement of castings, copper wire, stainless steel shafts, bearings, seals, electrical components, and packaging materials around repeatable product models.
The production process for a pump of this type involves multiple stages. Metal pump bodies and supports must be formed, machined, treated, and inspected. Impellers must be manufactured with accurate geometry so that hydraulic passages are consistent. Shafts must be dimensionally controlled to support bearing fit, rotor alignment, and mechanical-seal operation. Motors require winding, insulation treatment, rotor and stator assembly, capacitor installation, terminal connection, and electrical testing.
Assembly quality is particularly important in an automatic self-priming pump. The pump chamber, impeller, shaft, seal, pressure sensor, tank, and motor must work together as one system. Incorrect alignment or an improperly installed seal can cause leakage, noise, vibration, or premature failure. A structured manufacturing process helps reduce these risks.
The stated use of special anti-rust treatment on the cast-iron body and support demonstrates attention to the service environment. The specified brass impeller and AISI 304 stainless-steel shaft demonstrate a materials strategy focused on durability in water-contact areas. Copper motor winding, C&U bearings, thermal protection, Class F insulation, and IP44 protection further show that the product is designed as a complete electromechanical system rather than simply a hydraulic casting.
The company has also established related import and export service organizations to support procurement planning, order tracking, cross-border delivery, and foreign-trade services. For international buyers, this is a practical advantage. A pump purchase often involves more than technical selection; it also requires production scheduling, documentation, packaging coordination, shipping arrangements, and after-sales communication.
The company's wider product portfolio includes deep-well pumps, submersible pumps, domestic booster pumps, circulation pumps, solar water pumps, intelligent booster pumps, and other water-treatment peripheral products. This broad portfolio allows customers to source different pump types from one supplier and may support more consistent technical communication across a complete water project.
Since 2018, the company has invested in new energy and intelligent technology, including solar water pumps and intelligent booster pumps. This development direction is relevant to the EPS-AZ Series because automatic pressure control and integrated sensing are part of the broader movement toward more responsive, energy-conscious water systems.
The pump should be installed on a firm, level foundation capable of supporting the equipment and resisting vibration. A stable base helps maintain alignment and reduces noise transmission into nearby structures.
The suction pipe should be as short and direct as practical. Excessive bends, undersized pipe, sharp restrictions, and poorly sealed threaded joints can increase friction loss and allow air to enter. Because suction-side air leakage may prevent successful priming even when no water leak is visible, all connections should be sealed and checked carefully.
The suction pipe should not be smaller than the pump inlet unless the hydraulic design specifically permits it. For the larger models with 1.5-inch connections, using an undersized suction pipe can restrict flow and increase the risk of cavitation or unstable operation.
A foot valve or suitable non-return valve may be required depending on the water-source arrangement. The valve should be installed below the minimum water level and kept clear of sediment. A strainer can help prevent debris from entering the pump, but it must be sized correctly and cleaned regularly to avoid excessive suction loss.
The discharge line should include appropriate isolation valves so the pump can be serviced without draining the entire system. Where pressure surges may occur, the system designer should evaluate the need for additional protection such as a pressure-relief arrangement, expansion control, or water-hammer mitigation.
The electrical supply must match the motor requirements and local regulations. Wiring should be carried out by a qualified professional. The pump should be properly grounded, protected by suitable overcurrent equipment, and installed in a location where the terminal area cannot be exposed to flooding or direct water spray.
Before initial operation, the pump should be filled or prepared according to the installation instructions. The suction line should be checked for air leaks, and the motor rotation should be verified where applicable. The pump should never be operated dry because the mechanical seal depends on water for cooling and lubrication.
Routine maintenance begins with observation. Operators should monitor unusual noise, vibration, leakage, frequent starting, reduced pressure, overheating, and changes in flow. These symptoms can indicate a blocked filter, worn seal, suction leak, bearing problem, electrical issue, or incorrect pressure-control setting.
The suction strainer and any inlet filter should be inspected regularly, particularly when water is drawn from an open tank, pond, shallow well, or agricultural source. Sediment can obstruct the impeller passages and reduce flow. Although the pump is intended for clean water or similar liquids, the definition of clean water should be applied carefully in real installations.
The tank and pressure-control components should be checked if the motor starts and stops too frequently. Rapid cycling may result from incorrect pressure settings, insufficient tank pre-charge, a leaking check valve, a system leak, or a tank problem. Correct diagnosis is important because repeated starting can increase motor temperature and electrical wear.
Mechanical-seal leakage should be addressed promptly. A small amount of visible water near the shaft area may indicate seal wear or installation damage. Continued operation with a leaking seal can allow water to reach motor components and may increase repair costs.
The motor should be kept clean and adequately ventilated. Dust, leaves, insulation material, and other debris should not block the fan cover or cooling passages. The IP44 protection rating does not mean the motor can be exposed to immersion, heavy rain, or high-pressure cleaning.
For seasonal installations, the pump should be protected from freezing. Water that freezes inside the pump casing, pipes, or tank can expand and damage components. Where the pump is shut down for a long period, the system should be isolated, drained where appropriate, and protected according to the local climate.
Model selection should begin with the required flow rate. Estimate the number of outlets that may operate simultaneously and determine the flow required by each outlet. For irrigation, use the combined demand of the active zone rather than the total number of emitters in the entire property.
Next, calculate the total head. This includes the vertical distance from the water level to the highest discharge point, the pressure required at the outlet, and friction losses in the suction and discharge pipes. Valves, filters, elbows, tees, meters, and other fittings also contribute to the total requirement.
The maximum head listed for a model is not normally the head at maximum flow. As head increases, flow generally decreases. Therefore, the required duty point must be checked against the manufacturer's pump curve. A pump that is selected only by its maximum head may deliver insufficient flow, while a pump selected only by maximum flow may fail to provide adequate pressure.
Suction conditions must also be reviewed. The 9-meter maximum suction specification is a reference limit under suitable conditions, not a guarantee that every installation at 9 meters will perform identically. Atmospheric pressure, water temperature, altitude, pipe diameter, air tightness, and water-level fluctuation all influence practical suction performance.
For domestic systems, the smaller 1-inch models may be suitable where the flow requirement is moderate. For larger households, irrigation networks, water towers, or civil systems, the 1.5-inch models may be more appropriate. The selection should balance performance, energy use, purchase cost, and future expansion.
The EPS-AZ Series is intended for clean water and liquids with physical and chemical properties similar to water. It should not be used for abrasive slurries, heavily contaminated water, corrosive chemicals, flammable liquids, or liquids containing large solids unless the manufacturer has specifically approved the application.
The stated maximum liquid temperature is 60°C, and the maximum ambient temperature is 40°C. These limits should be respected. Operating outside the specified range can damage seals, reduce motor insulation life, increase thermal stress, and compromise automatic-control components.
The product should not be confused with a deep-well submersible pump. Its maximum suction height is intended for surface-mounted lifting applications. If the water level is substantially deeper or if the well diameter and water conditions require a submerged motor, another pump category should be selected.
Automatic operation does not eliminate the need for system protection. Dry-run conditions, blocked suction lines, closed valves, leaking distribution pipes, and unstable electrical supply can still cause trouble. Where the application is critical, additional water-level protection, overload protection, pressure relief, or backup equipment may be appropriate.
For wholesalers and distributors, the product range offers a useful balance between standardization and model variety. Eight power levels cover a broad selection of domestic and civil applications, while common construction features simplify product training and technical support.
For contractors, the integrated design can reduce the number of separate components that must be specified and installed. The tank, pressure sensor, automatic control, and pump are supplied as part of a coordinated product concept. This can make quotations clearer and reduce the possibility of mismatched pressure-control components.
For original equipment manufacturers and project integrators, the combination of cast iron, brass, stainless steel, copper winding, thermal protection, and multiple connection sizes provides a practical technical platform. The product can be incorporated into water-tower systems, storage-tank packages, garden irrigation units, and small pressure-boosting assemblies.
For end users, the key advantages are automatic operation, self-priming convenience, suitable pressure performance, broad application capability, and reduced need for manual supervision. These benefits are particularly valuable when water demand changes frequently or when the pump is installed in a location that is not constantly attended.
The pump is designed for clean water and liquids with physical and chemical properties similar to water. The water should not contain excessive abrasive particles, large solids, or aggressive chemicals unless the manufacturer confirms compatibility.
The stated maximum suction height is 9 meters. Actual performance depends on altitude, water temperature, pipe diameter, suction-line length, valve condition, and whether the suction line is completely airtight.
Yes, the stated maximum liquid temperature is 60°C. The complete installation must also be suitable for the selected temperature, including pipes, seals, valves, fittings, and control components.
Yes. The series includes an automatic pressure-control arrangement with a pressure sensor and tank. The pump is designed to start when system pressure falls due to water demand and stop when pressure is restored.
The tank provides a reserve of pressurized water and helps reduce unnecessary motor starts during small or intermittent water demands. It can support smoother pressure control and reduce cycling-related stress.
The AISI 304 stainless-steel shaft offers improved resistance to rust in water-contact areas. It supports reliable rotation and can help protect the shaft and mechanical seal from corrosion-related damage.
The pump is suitable for surface-mounted suction applications up to the stated limit of 9 meters. A deep well with a water level beyond practical suction height generally requires a submersible or deep-well pump.
The correct model depends on the required flow, total head, pipe size, number of outlets, and water-source conditions. Smaller houses with moderate demand may use a 1-inch model, while larger homes or systems with greater simultaneous demand may require a 1.5-inch model. Selection should be based on the duty point and pump curve.
Yes. The series is recommended for gardens and allotments. The irrigation system should include suitable filtration where necessary, and the pump should be selected according to sprinkler, hose, or drip-system flow and pressure requirements.
IP44 indicates protection against specified solid objects and water splashing from different directions. It does not mean the motor is waterproof for immersion or suitable for direct high-pressure water cleaning.
Check for system leaks, incorrect pressure settings, a damaged check valve, insufficient tank pre-charge, or a pressure-control problem. Frequent cycling should be investigated because it can increase motor temperature and reduce component life.
No. Dry running can damage the mechanical seal and overheat the pump. The suction line and pump chamber should be properly filled, and the water supply should be maintained during operation.
The EPS-AZ Series is manufactured by Taizhou Edwin Electric Co., Ltd., also known as Edwin Pump, in Zhejiang Province, China. The company provides pump research and development, mass production, export, procurement coordination, and related water-pump product services.
The EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-priming Pump with Tank is a versatile pressure and water-transfer solution for domestic, agricultural, water-tower, and small civil applications. Its principal strengths include self-priming capability, automatic pressure control, an integrated tank, a brass impeller, an AISI 304 stainless-steel shaft, treated cast-iron construction, copper motor winding, C&U bearings, thermal protection, Class F insulation, and IP44 motor protection.
Compared with a basic standalone pump, the integrated design can simplify installation and improve user convenience. Compared with lower-cost products that use less resistant internal materials, the stainless-steel shaft and brass impeller provide a stronger approach to long-term water-contact durability. The availability of eight motor sizes also makes it easier to match the product to different flow and head requirements.
The manufacturer's experience in research and development, mass production, global export, intelligent pump technology, and one-stop procurement support further strengthens the product's position for international customers. With correct model selection, professional installation, proper electrical protection, and regular maintenance, the series can provide dependable automatic water supply for a wide range of clean-water systems.
1. Product technical data and application information for the EPS-AZ Series Automatic AISI 304 Shaft Hot and Cold Water Self-priming Pump with Tank.
2. Manufacturer-provided materials table for pump body, support, impeller, mechanical seal, shaft, motor case, motor cover, fan, and electrical components.
3. Manufacturer-provided company information concerning product development, mass production, export services, intelligent pump technology, and water-pump applications.
4. General engineering principles for centrifugal pump selection, total dynamic head calculation, suction-line design, and automatic pressure-boosting systems.
5. General electrical and mechanical safety practices for surface-mounted single-phase water pumps.
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edwina@edwin-pump.com
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