4″ ST Submersible Pumps
Floating impeller design for dependable service with sandy water tolerance.
Stairs Pumps
Stairs Industrial
Industrial Pumps for Water Treatment & Process Applications
Stairs Industrial is a world-class manufacturer of submersible, centrifugal, and multistage pumps. AquaLine Services is the authorized representative in Pakistan — supplying Stairs pumps for water supply, RO boosting, HVAC, and industrial process duties.
Since 1981, Stairs has built a reputation for dependable pump quality and complete manufacturing capability. AquaLine provides model selection, spare parts, installation support, and after-sales service from regional offices across Pakistan.
Stairs Pump Technologies
Submersible borehole pumps, vertical multistage in-line boosters, and compact horizontal multistage units — for water treatment, RO, HVAC, and industrial transfer duties.
Submersible Pumps
4-inch ST and SP stainless steel submersible pumps for boreholes and wells.
View detailsVertical Multistage
SB, SBI, and SBN in-line multistage pumps for boosting and RO feed.
View detailsHorizontal Multistage
CB and CBI compact multistage pumps for space-limited installations.
View detailsBooster & HVAC
Pressure boosting, filtration, cooling, and fire-fighting applications.
View details
Deep Well
4″ Submersible Electric Pumps
Stairs 4-inch ST series pumps use high-quality materials and a floating impeller design that reduces starting torque and tolerates sand in the water — delivering years of dependable borehole and well service.
The SP stainless steel range offers corrosion and abrasion resistance for aggressive water sources, developed with efficient hydraulic impeller and diffuser design for high performance.
- 4″ ST submersible electric pumps
- 4″ SP stainless steel submersible range
- Floating impeller for sand tolerance
- Suitable for water supply and irrigation
In-Line Design
SB, SBI & SBN Vertical Multistage Pumps
SB, SBI, and SBN vertical multistage centrifugal pumps are powered by standard electric motors with the pump shaft directly coupled. The in-line suction and discharge ports provide a compact footprint and straightforward installation.
Multiple stages and capacities are available for reverse osmosis feed, filtration, pressure boosting, HVAC, cooling, and general industrial water treatment duties.
- In-line suction and discharge ports
- Head up to 325 m, capacity to 90 m³/h (50 Hz)
- Detachable cartridge mechanical seal
- RO feed, filtration, and pressure boosting
Compact Install
CB & CBI Horizontal Multistage Pumps
CB and CBI horizontal multistage centrifugal pumps mount impellers directly on the motor shaft with the pump housing attached to a base plate — ideal where vertical space is limited.
A high-quality mechanical seal is included as standard. The design suits small plant rooms, skid packages, and auxiliary water systems in industrial facilities.
- Horizontal multistage on motor shaft
- Compact base-plate mounting
- Integrated mechanical shaft seal
- Ideal for confined installation spaces
Applications
Booster, HVAC & Process Pumping
Stairs pumps serve pressure boosting, heat recovery, industrial washing, fire-fighting, swimming pools, cooling towers, and aggressive liquid handling — wherever reliable transfer and consistent head are required.
AquaLine integrates Stairs pump selection with wider water treatment projects — from RO and UF plants through cooling water and boiler feed systems — with nationwide technical support.
- Pressure boosting and HVAC applications
- Water treatment and filtration skids
- Fire-fighting and cooling systems
- Installation and after-sales support nationwide
Key Stairs Pump Series
From deep-well submersibles through vertical and horizontal multistage pumps — AquaLine supplies the Stairs range with genuine spares and technical support.
4″ SP Stainless Steel
Corrosion and abrasion resistant submersibles for demanding water sources.
SB / SBI / SBN Series
Vertical multistage centrifugal pumps with in-line suction and discharge.
CB / CBI Series
Horizontal multistage pumps with impellers mounted on the motor shaft.
HBI Booster Pumps
High-efficiency boosting for water transfer and pressure applications.
Spares & Service
Genuine parts, technical selection, and AquaLine after-sales support.
Pumps Backed by Water Treatment Expertise
Correct pump selection depends on duty point, water quality, and system design — AquaLine brings pumping and water treatment knowledge together.
Stairs Pumps Across Pakistan's Industries
Need a submersible or multistage booster pump?
Speak with our application team for Stairs pump selection, performance curves, and integration with your water treatment or RO plant.