Vertical Turbine Pumps
Deep-well, booster, and can-mounted turbines sized to your flow, head, and setting depth and backed by Midwest field service.
What is a vertical turbine pump and when do you need one?
A vertical turbine pump is a multi-stage centrifugal pump whose bowl assembly hangs below the liquid level on a vertical shaft, with the driver mounted at grade. You need one when the water sits deep, when high head must come from a small footprint, or when a wet pit or cooling-tower basin has no room for a horizontal pump. Tell us the flow, total head, and setting depth and an engineer will size the bowl assembly and column before quoting.
How the pump is built and why that matters
The working end is a stack of bowls, each holding one impeller. Liquid enters at the suction bell, passes stage to stage, and rises through the column pipe to the discharge head at grade. Adding stages raises head in near-linear proportion, so a turbine develops high pressure at a chosen flow without growing the casing diameter. Two shaft arrangements are common: the open lineshaft with product-lubricated bearings, and the enclosed lineshaft with an oil or clean-water lube tube. Short-set booster turbines can also drop into a fabricated can when there is no well or pit to work from.
Because the impellers run submerged, the pump is self-flooded and does not rely on suction lift or priming. That is the core advantage over a surface pump: the available NPSH is set by the setting depth, not by a struggling suction line. The cost is a taller assembly, thrust that the vertical hollow-shaft motor must carry, and a longer column that has to be straight and well supported.
Sizing a vertical turbine, step by step
- Flow and head first. Fix the design flow and total dynamic head, including column friction and the lift from pumping water level to discharge. Bowl diameter and stage count follow from there.
- Setting depth and NPSH. Set the bowls far enough below the lowest pumping level to keep NPSH available above NPSH required at design flow, with margin for drawdown. In a well, keep the suction well above the screen.
- Column and shaft. Long columns need intermediate bearings on correct spacing and a shaft sized for the thrust and torque. Straightness at assembly is not optional.
- Materials for the water. Clean water tolerates bronze-fitted bowls; sand, chlorides, or aggressive water calls for harder bowls, coatings, and bearing materials chosen for the grit.
- Driver and thrust. The vertical hollow-shaft motor or right-angle gear must be rated for down-thrust and set with correct impeller lateral adjustment.
Service and common failure modes
Most turbine problems trace to three causes: worn lineshaft bearings from poor lubrication, lost impeller lateral clearance that drags efficiency down or contacts the bowls, and abrasive wear from sand. Rising vibration, falling head at the same speed, and thrust bearing heat are the early signals. A proper rebuild checks shaft runout, replaces bearings and wear rings, resets lateral, and confirms the driver thrust rating. Our factory-trained technicians service turbines in the shop and pull deep-set units in the field.
Lines available through Brabazon
For vertical turbine pumps we supply the Peerless line, covering deep-well, booster, and can-mounted lineshaft turbines across a wide range of flows and heads. An engineer selects the bowl assembly, column, and driver for your duty rather than pushing a catalog number.
Industries we serve with turbine pumps
Vertical turbine pump questions, answered first
When should I specify a vertical turbine pump instead of a horizontal centrifugal?
Specify a vertical turbine when you need high head from a small footprint or when the supply level sits below the pump floor. Because the bowl assembly hangs below the liquid surface, the pump is self-flooded and avoids the priming and suction-lift limits that constrain a surface-mounted horizontal pump. Deep wells, wet pits, and cooling-tower basins are the classic fits. When the source is above the pump and floor space is not tight, a horizontal centrifugal is usually simpler to service.
How does adding stages change a vertical turbine pump?
Adding bowl stages raises total head in nearly direct proportion while flow stays governed by the impeller and bowl diameter. Each stage is a bowl and impeller in series, so a multi-stage turbine develops high head at a given flow without a larger casing. This is why turbines suit deep settings and high-pressure booster duty. The tradeoff is a longer assembly, more thrust on the driver, and more parts to inspect at rebuild.
What controls reliability on a lineshaft turbine?
Shaft straightness, bearing lubrication, and correct impeller lateral set control reliability on a lineshaft turbine. The long shaft rides on lineshaft bearings that need clean lubrication, water or oil depending on the design, and any bend or misalignment shows up as vibration and accelerated wear. Setting impeller lateral clearance at installation, and holding it, keeps efficiency and prevents bowl contact. We check shaft runout and lateral on every rebuild.
Can a vertical turbine handle water with sand or grit?
Yes, within limits, if the bowls, wear rings, and bearings are selected for it. Well water carrying fine sand accelerates wear on bronze-fitted bowls, so abrasive service usually calls for hardened or coated bowls, product-lubricated bearings sized for the grit, and a conservative setting depth above the well screen. Tell us the sand content and we match materials to the duty rather than guess.
Talk to a Pump Engineer
Send your flow, head, and setting depth and an engineer will size the bowl assembly, column, and driver, then quote the Peerless line for your duty.
Request a vertical turbine quote
Tell us the flow, total head, setting depth, and water quality and a pump engineer from your nearest branch will size and quote the right turbine. Or call 800.825.3222, answered 24/7.
Request a Vertical Turbine Quote
Request received. If you need someone now, call 800.825.3222.
Please fill in all required fields (name, company, email, phone, preferred contact method, ZIP, and city), or call 800.825.3222.