4" submersible pump without motor, type: SP-70-18-M4-2" hydraulics (inox)

Efficient Hydraulic Component for Professional Pumping

The hydraulic part of the STAIRS SP-70-18-M4 deep well pump is an advanced solution designed for demanding groundwater pumping tasks from deep wells and boreholes. The device with a diameter of 4 inches to the NEMA standard provides impressive performance up to 300 liters per minute at a maximum head of 111 meters, making it an ideal choice for professional water installations.

AISI 304 Stainless Steel Construction

The solid construction made of high-grade AISI 304 stainless steel guarantees exceptional durability and corrosion resistance in all environmental conditions. All key components - pump housing, discharge and suction nozzles, cable guard, impeller hubs, impellers, pump shaft and coupling - have been made from the same noble material. Additionally, the shaft sleeve has been made from a carbon/graphite/PTFE composite, and the sliding bearing from durable NBR, ensuring long-lasting and trouble-free operation even under intensive use.

Operating Parameters and Environmental Resistance

The pump has been adapted to work with media at temperatures up to 30°C and can handle water containing up to 50 grams of sand per cubic meter, which significantly extends its range of applications. The check valve located in the discharge nozzle provides additional protection against reverse flow of the medium, protecting the installation from damage. Advanced technologies used in the construction increase the device's efficiency and ensure its long-term functionality even in the most demanding working conditions.

Applications and System Compatibility

The STAIRS SP-70 hydraulic part is perfect for water supply systems in single-family homes, agricultural farms and professional industrial installations. Thanks to the NEMA standard, the device is compatible with a wide range of electric motors available on the market, making it easier to select the appropriate drive for a specific application. The simple construction and ease of operation mean that even people without specialized experience will be able to handle the pump installation and maintenance, and the solid construction guarantees years of trouble-free operation in all environmental conditions.