Deep well pumps & accessories

Guide to Deep-Well Pumps and Accessories for Drilled Wells

Extracting drinking water from a drilled well places high demands on the system's components. Because a deep-well pump is lowered deep into the bedrock and operates under demanding conditions, correct sizing and compatible installation accessories are absolutely crucial for trouble-free operation, year after year.

Key Components of a Complete Pump System

A complete borehole system consists of more than just the submersible motor and the pump hydraulics. A stable and compliant installation relies on the interaction of several essential components:

• Wellhead and well cap: These seal tightly around the casing above ground, preventing dirt, insects, and surface water from entering the drinking water supply.
• Adapter solutions: These facilitate a frost-free connection between the vertical riser pipe in the well and the horizontal underground pipeline leading to the property.
• Centralizers and guides: These keep the pump centered, stabilize the installation during startup, and prevent cables and pipes from rubbing against the borehole wall.
• Pressure tanks and control equipment: Pressure tanks, pressure switches, and pressure gauges manage the pump’s start/stop cycles, ensuring consistent pressure at the taps and protecting the motor from excessive start-stop frequency.
• Check valves and cabling: These ensure that the water column remains intact when the pump is switched off, and that the electrical supply is delivered via approved, watertight submersible cables.

Benefits of Specialized Installation Accessories

Using purpose-built deep-well pumps and accessories from the outset minimizes the risk of costly downtime and frequent maintenance. Airtight seals help preserve water quality, while proper pressure regulation reduces both energy consumption and mechanical wear. Components made from corrosion-resistant materials—such as stainless steel, brass, and dezincification-resistant alloys—can withstand harsh, mineral-rich well water over the long term.

Factors to Consider Before Purchase

Before selecting a deep-well pump and its associated installation package, consult the well driller’s report to determine the borehole depth, groundwater level, and inflow rate. The pump’s power and head (lifting capacity) must correspond to the distance from the pump’s location to the highest water outlet in the property, accounting for pressure losses within the piping system. The volume of the pressure tank should be sized based on the household’s peak simultaneous water demand, which helps extend the intervals between motor starts. Additionally, verify the dimensions of the casing and connection threads to ensure that all caps, adapters, and pipe fittings are compatible, avoiding the need for unnecessary transition components.