DP SELF-PRIMING JET PUMP

Component

Pump Body: Cast Iron
Pump Support: Cast Iron
Motor Housing: Aluminum Alloy
Impeller: Brass
Motor Shaft: Carbon Steel, 304SS weld if request
Venturi Pipe: PPO
Diffuser: PPO

Operating Condition

Liquid Temperature up to 60 ℃
Ambient Temperature up to 40 ℃
Total Suction Lift up to 9 m
Function: Self-Priming

Motor

1~220V/50Hz, 110V/60Hz, 220V/60Hz on request
Insulation Grade: Class B
Cooling: External Ventilation
Protection: IP44
Build-in with Thermal Protector
Continuous Work S1

Model Parameters

Product Summary

DP self-priming deep well jet pumps are surface-mounted pumps for clean-water supply from deeper sources, domestic distribution, garden irrigation, and storage tank feeding. The range includes JETDP225, JETDP370, DP505A, and DP750A models from 0.55 kW to 1.5 kW. Depending on the selected ejector, the published table shows maximum head values from 30 m to 70 m and flow values from 1.8 m³/h to 3.0 m³/h. Cast iron hydraulic parts, brass impellers, and ejector options provide practical specifications for deep well water lifting.

Detailed Description

A deep well jet pump uses an ejector installed below the surface water level. The DP self-priming deep well jet pump is installed above ground while the ejector is placed in the well. This arrangement supports deeper water lifting than a typical surface suction installation when the system is selected and installed according to the published parameters. The DP range can suit homes, small distribution systems, garden irrigation, and tank filling where a submersible pump is not the preferred configuration. Pipe layout, ejector selection, water level, check valves, and pipe sealing affect the operating result.

Key Features

Each DP self-priming deep well jet pump uses a cast iron pump body and support, an aluminum alloy motor housing, and a brass impeller. The listed venturi pipe and diffuser use PPO material. Motor information includes Class B insulation, external ventilation, IP44 protection, a built-in thermal protector, and S1 continuous work. E25 and E30 ejector choices are shown in the model table, giving installers a configuration reference for different working conditions. The stated connections are 1 inch × 1¼ inch × 1 inch, supporting the suction and delivery arrangement of the jet system.

Technical Parameters

The table provides core data for DP self-priming deep well jet pump selection. JETDP225 is rated at 0.55 kW / 0.75 HP and lists 2.1 m³/h at 30 m or 1.8 m³/h at 40 m, using E25 or E30 ejectors. JETDP370 is rated at 0.75 kW / 1.0 HP. DP505A is rated at 1.1 kW / 1.5 HP and lists values up to 60 m. DP750A is rated at 1.5 kW / 2.0 HP and lists values up to 70 m. Liquid temperature is listed up to 60 ℃ and ambient temperature up to 40 ℃.

Engineering Advantages

The ejector is a key part of a deep well jet pump system. It uses recirculated water through a venturi principle to create low pressure at the intake and lift water from the well. Ejector choice affects the balance between flow and head, so a DP self-priming deep well jet pump should be selected from model and ejector data rather than motor power alone. The brass impeller supports the intended clean-water duty, while the cast iron section provides a rigid mounting base. The thermal protector responds to abnormal motor heat conditions, and external ventilation assists motor heat management.

Applications

DP self-priming deep well jet pumps can be considered for domestic water supply from deep wells, small and medium water storage distribution, garden irrigation, tank filling, and clean-water transfer. They are relevant where the source water level is below the practical suction range of a standard surface pump and where an ejector-based solution fits the installation plan. The DP pump is not intended for abrasive solids, sewage, or fluids chemically aggressive to the stated materials. Installation should be enclosed or sheltered from severe weather, and well piping should be sized and sealed for the selected ejector configuration.

Commercial Value

For B2B buyers, the DP self-priming deep well jet pump family provides four motor sizes and E25 or E30 ejector options within one range. This helps distributors serve several deep well lift requirements while maintaining consistent component materials and motor features. Published flow, head, ejector, connection, gross weight, and dimension data support selection, installation planning, and inventory comparison. CGO presents the DP deep well jet pump range with transparent model data for evaluation against actual water level, pipe layout, and required delivery pressure.

FAQ

Q:What is a DP self-priming deep well jet pump used for?
A:It is used for clean-water supply from deeper sources with an above-ground pump and submerged ejector.

Q:What do E25 and E30 mean?
A:They identify the ejector options in the table.

Q:How should a model be selected?
A:Compare water level, required flow, total head, piping losses, ejector selection, and electrical supply with the data.

Q:Can the DP pump handle dirty water?
A:It is intended for clean water and should not be used with abrasive solids or sewage. Use an enclosed or sheltered installation and follow local electrical and plumbing practices.