S4 12/18 T 4GG 4" submersible pump for boreholes and wells - 3,0kW - 3x400V DAB.S4 GG

Product detailed description

Vertical submersible pumps like the IVAR S4 12/18 T 4GG are commonly deployed in deep well and borehole applications where a compact, high-efficiency solution is required. These units are frequently used in municipal water supply, irrigation systems, fire protection, and industrial water circulation. The 4-inch casing allows installation in standard boreholes and ensures compatibility with most down-hole pipe systems. Installers typically handle tasks such as cable management, alignment of the pump body, and integration with surface controls and pressure vessels. The motor’s sealed construction and corrosion-resistant materials make it suitable for long-term deployment in groundwater environments.

The pump is designed for clean, non-aggressive water with minimal particulate content. It is not suited for abrasive or viscous media. The 4GG motor and stainless steel housing ensure durability in corrosive conditions. The pump can be installed vertically or horizontally, though vertical orientation is preferred for optimal hydraulic performance. A cooling jacket is recommended for extended operation in high-temperature environments.

Technical parameters

The technical parameters listed define the pump’s performance envelope and compatibility with system requirements. The 3.0 kW power rating and 3x400V input voltage determine the pump’s suitability for medium to high-flow applications. The maximum head of 427 m and flow rate of 21.6 m³/h indicate the unit’s ability to serve large-scale systems. The 4-inch diameter and stainless steel components ensure robustness in deep well conditions. The IP68 rating confirms full submersion capability, while the class F insulation supports operation in elevated temperatures.

Installation and connection

Installation of the IVAR S4 12/18 T 4GG requires careful alignment of the pump body within the borehole or well. The pump is suspended using the included hanger rings and secured with appropriate lifting gear. The motor and pump assembly should be lowered slowly to prevent damage to internal components. Connection to the power supply must be done via a three-phase 400V system with appropriate circuit breakers and protective devices. The discharge flange size varies depending on the model suffix, with 1¼” or 2” options available for different flow configurations.

Key checks during installation include verifying the integrity of the sealing ring between the pump and motor, ensuring the cable is routed correctly and free of kinks, and confirming the pump is fully submerged before energisation. A cooling jacket is recommended for installations exceeding 300 m depth or in high-temperature environments.

Compatibility and accessories

This pump is compatible with standard 4-inch borehole systems and can be integrated with pressure tanks, control panels and flow meters. Accessories such as check valves, strainers and lifting kits are typically required for complete system functionality. The pump is also compatible with remote monitoring systems for real-time performance tracking. Related products may include additional submersible pumps for redundancy or parallel operation, though specific models are not listed here.

Technical background for designers

The IVAR S4 12/18 T 4GG operates on a centrifugal principle, using multi-stage impellers to generate high head. The motor is a two-pole asynchronous unit with stainless steel components in contact with the fluid, ensuring resistance to corrosion and scaling. The impellers are made of technical polymer, optimised for energy efficiency in line with EU ErP directives. The motor is cooled by a mixture of water and glycol, which circulates through the stator and rotor assemblies to prevent overheating.

The pump is integrated into the system via threaded or flanged connections, depending on the model. The stainless steel casing and internal components contribute to long-term reliability, while the sealed motor prevents ingress of water and particulates. The efficiency of the pump is influenced by the quality of the water, the depth of installation and the condition of the bearings. Regular inspection of the motor seal and impeller wear is essential to maintain performance over time.

Service and operation

Regular service includes visual inspection of the pump casing for signs of corrosion or mechanical damage, verification of the motor’s insulation resistance, and checking the condition of the bearings and seals. The pump should be periodically removed for cleaning, particularly in environments with high particulate content. The maximum allowable number of starts per hour is 20, and exceeding this limit may lead to thermal overload and motor failure.

During operation, key checkpoints include monitoring the current draw, which should remain within the rated range, and ensuring the discharge pressure remains stable. Any unusual noise or vibration should be investigated immediately. The pump should be drained and stored dry if not in use for extended periods. No specific service intervals are provided in the brief, but routine maintenance is advised in accordance with the manufacturer’s guidelines.

Frequently asked questions

Can the IVAR S4 12/18 T 4GG be used in horizontal installations?
Yes, the pump can be installed horizontally, although vertical orientation is recommended for optimal hydraulic performance and ease of maintenance.

Is the pump compatible with non-potable water?
Yes, the pump is suitable for clean, non-aggressive water. It is not intended for use with abrasive or chemically aggressive fluids.

What is the maximum allowable sand content in the water?
The pump can handle up to 150 g/m³ of sand. Exceeding this limit may accelerate wear on the impellers and seals.

How is the motor cooled during operation?
The motor is cooled by a mixture of water and glycol that circulates through the stator and rotor, preventing overheating and extending service life.