Product Overview

The Long-Shaft Pump for Domestic Water Supply is a deep-well long-shaft vertical pump designed for reliable water extraction from underground sources. This pump type is widely used across power plants, steel mills, mines, chemical plants, fire protection water supply, municipal water treatment plants and agricultural irrigation.

The long-shaft configuration enables the pump impeller to be positioned at depth below the water surface while keeping the motor accessible at ground level. Depending on regional terminology, it may also be referred to as a Vertical Turbine Pump, Deep-Well Long-Shaft Pump, Long-Shaft Deep Well Pump for Domestic Water or Long-Shaft Deep Well Pump.

Key Features

• Wide application range covering domestic water supply, industrial cooling, irrigation and fire protection
• Long-shaft vertical design enables deep-well water extraction with ground-level motor access
• Suitable for water temperatures up to 80°C with solid content not exceeding 0.01% by weight
• Compatible with water pH range of 6.5-8.5 and hydrogen sulfide content not exceeding 1.5 mg/L
• Maximum flow capacity up to 1200 m³/h for large-scale water supply applications
• Maximum head up to 250 m for deep-well and elevated water delivery requirements

Applications

• Municipal domestic water supply and water treatment plant intake
• Industrial cooling water supply for power plants and steel mills
• Agricultural irrigation and groundwater extraction
• Fire protection water supply from deep-well sources
• Chemical plant process water supply
• Mine dewatering and industrial water supply applications

Customer Benefits

High-Capacity Water Extraction

With a maximum flow capacity of 1200 m³/h, the pump serves large-scale domestic water supply, industrial cooling and irrigation applications requiring substantial water volumes.

Deep-Well Capability

Maximum head up to 250 m enables reliable water extraction from deep underground sources, making the pump suitable for deep-well installations where the water table is significantly below ground level.

Ground-Level Motor Access

The long-shaft design positions the motor at ground level while the impeller is submerged at depth, enabling straightforward motor inspection and maintenance without accessing the well.

Wide Operating Temperature Range

Suitable for water temperatures up to 80°C, enabling the pump to serve industrial cooling water supply and process water applications where elevated water temperatures are encountered.

Wide pH Compatibility

Compatible with water pH range of 6.5-8.5, making the pump suitable for a broad range of groundwater sources and municipal water supply applications.

Versatile Multi-Industry Application

From municipal water supply to power plant cooling, agricultural irrigation and fire protection, the pump serves a wide range of industries and application types.

Technical Specifications

Parameter	Specification
Product Type	Long-shaft vertical deep-well pump
Maximum Flow Rate	1200 m³/h
Maximum Head	250 m
Maximum Water Temperature	80°C
Maximum Solid Content	0.01% by weight
Water pH Range	6.5-8.5
Maximum H₂S Content	1.5 mg/L
Oil Content	None

Selection Guidance

To select the appropriate long-shaft pump for domestic water supply, please provide the following information:

• Required flow rate (m³/h or L/s)
• Required head (m)
• Well depth and water level (static and dynamic)
• Well diameter and casing configuration
• Water temperature and quality parameters (pH, solid content, H₂S content)
• Available voltage and frequency
• Application type (domestic water supply, industrial cooling, irrigation, fire protection)

Note: When used in deep wells, the well bore must be straight without bidirectional curvature.

Installation and Maintenance

Installation Guidance

The pump should be installed in a straight well bore without bidirectional curvature. The long-shaft assembly must be properly aligned between the motor at ground level and the pump impeller at depth. The discharge piping must be properly supported to prevent load transfer to the pump flanges.

Pre-Start Inspection

Before starting the pump, confirm the following:

• Motor is securely mounted and level at ground level
• Long-shaft alignment is verified and connections are secure
• Well water level meets the minimum submergence requirement for the impeller
• Discharge piping connections are complete and leak-free
• Motor wiring is correct and terminals are secure
• Rotational direction matches the arrow indicated on the pump casing
• Well bore is confirmed straight without bidirectional curvature

Routine Maintenance

Regular inspection should include:

• Monitoring motor bearing temperature and vibration levels
• Verifying that the pump maintains the required flow and head
• Inspecting long-shaft bearings and alignment
• Checking water quality parameters (temperature, pH, solid content, H₂S content)
• Inspecting all pipeline connections for signs of leakage

Available Configurations

• Flow rates up to 1200 m³/h
• Heads up to 250 m
• Various shaft lengths for different well depths
• Multiple impeller stage configurations for varying head requirements
• Electric motor drive with various power ratings
• Integrated control panels with automatic start and monitoring

FAQs

What is a long-shaft pump for domestic water supply?

It is a vertical deep-well pump with an extended drive shaft connecting the motor at ground level to the pump impeller at depth, designed for reliable water extraction from underground sources for domestic, industrial and agricultural applications.

What is the maximum flow rate?

The maximum flow rate is 1200 m³/h, suitable for large-scale water supply applications.

What is the maximum head?

The maximum head is 250 m, suitable for deep-well installations and elevated water delivery requirements.

What water quality parameters are acceptable?

Water temperature up to 80°C, solid content not exceeding 0.01% by weight, pH range 6.5-8.5, hydrogen sulfide content not exceeding 1.5 mg/L, and no oil content.

Can this pump be used for fire protection?

Yes. The pump is suitable for fire protection water supply from deep-well sources in addition to domestic water supply, industrial cooling and agricultural irrigation applications.

What are the well bore requirements?

When used in deep wells, the well bore must be straight without bidirectional curvature to ensure proper pump alignment and operation.

Contact Chaodun

For product selection, technical data, performance information or project quotations, please contact Shanghai Chaodun Machinery Manufacturing Group Co., Ltd.

Website: https://cd-pump.cc

Email: Suzion@cd-pump.com

WhatsApp: +44 751 8050 473