4-inch Stainless Steel Submersible Pumps (50/60 Hz)

Our 4-inch stainless steel submersible pumps are perfect for agricultural, residential & industrial sectors. They are made with high-quality AISI-304 grade stainless steel and are designed as per the NEMA standards.

The 4″ stainless steel submersible pumps from Unnati Pumps are very effective since they have an energy-efficient hydraulic design, are easy to install, and also provide a cost-effective operation. The impellers and diffusers of this pump are built of stainless steel to maximize their efficiency, minimize loss, and achieve corrosion resistance.

The pump is protected from extreme water hammering by the built-in non-return valve. Moreover, there are strainers built into the input to refrain large particles from getting into the pump. High-grade rubber, such as NBR, is used in the construction of the intermediate bush and wearing ring.

The pumps are examined at each stage for quality assurance, and their flow, pressure, power consumption, and leaks are measured. This 4-inch stainless steel submersible pump can be used for irrigation, sprinklers, fountains, residential water supply, and more.

Stainless Steel Submersible Pumps
Performance Range Description / Moc Downloads

Performance Range

Flow range:- Max. 18.8 M3/h

Head range:- Max. 547m

Special Construction on request

Also available in stainless steel AISI 316 Material (for Sea water application)

Also available with NPT thread pipe connection.


Submersible Pumps for deep wells of 4″(DN100mm).

Size for connection to the motor accorinding to NEMA Strandards.

Delivery Casing with built-in return valve.

All standard pumps are completely manufactured out of stainless steel AISI 304 Sheet Metal.

Impeller : Radial Flow Impellers – USP 2, USP 3, USP 5

Mixed Flow Impellers – USP 8, USP 14

Connection: Screwed pipe Connection with BSP Thread as standard


Post. Component Material
1 Bowl/Diffuser Stainless Steel AISI 304
2 Impeller Stainless Steel AISI 304
3 Neck ring NBR
4 Shaft Stainless Steel AISI 316
5 Couple Stainless Steel AISI 316
6 Delivery Casing Stainless Steel AISI 304
7 Suction Case Stainless Steel AISI 304
8 Bearing Bush NBR
9 Strainer Stainless Steel AISI 304

Operating Conditions

Liquid temperature : 0’C to +45’c

Max. Sand content into the water : 50 g/m3

Max. Start per Hour: 30 at regular intervals

Direction of rotation : Clockwise as seen from the pump coupling side.

4” Stainless Steel Submersible Pumps 50 Hz


4” Stainless Steel Submersible Pumps 60 Hz