Software for the yard running centrifugal pumps.

A centrifugal pump is the general-purpose unit a rental yard sends when a job needs steady water moved and the liquid is mostly water, not mud. An impeller spins inside the casing and throws the liquid out under pressure, which makes it the default tool for transfer, dewatering relatively clean water, irrigation, and shuttling between tanks and ponds. The catch is that a centrifugal pump has to be primed before it will move anything, and it loses prime the moment it pulls air — so the rental is really the pump plus a kit of suction hose, discharge hose, fittings, and a strainer, every piece of which decides whether the unit works at all. Run it dry, lift it too high above the water, or push it through too much hose, and the pump cooks a seal or pits an impeller. EquipFlow runs centrifugal pumps the way the yard that built it does — dispatch, billing, maintenance, and return inspection on one record per unit.

Built inside Rental King, right now.

Rental King is a heavy-equipment rental yard in Odessa and Midland, TX. They run centrifugal pumps, manlifts, forklifts, light towers, generators, compressors, and water trucks on MSA contracts through the Permian Basin — 24/7, oilfield pace. EquipFlow was designed and first deployed inside that yard. Every feature was tested against their live operation before it shipped. The product runs there today.

Centrifugal pumps are low-ticket units that bleed margin in ways a yard does not see until the books close. A pump committed to a transfer or dewatering job earns nothing extra if the standby time never reaches the invoice, and it loses outright when a dry run or a sand-fed impeller comes back as damage the inspection should have caught and charged. The hose kit is half the value and most of the loss — a split suction line or a missing foot valve walks off and nobody notices until the next renter cannot hold prime. Run hours tie maintenance to billing, so they have to be captured the same way every time: at return, on the inspection, against the rental record. When dispatch, billing, maintenance, and inspection all read from one unit record, the dispatcher sends the right kit, the bookkeeper bills every standby day, and the mechanic services on real run time instead of a guess. That discipline is what keeps a fleet of cheap, hard-used pumps from quietly eating its own margin.

Centrifugal Pump specs the rental record tracks.

Every number below is a sourced specification range. The render layer is the only path these values reach the page — they live on the unit record, not in a dispatcher's head.

Discharge port size

2-6in

Maximum flow rate

187-1700gpm

Maximum total head

82-160ft

Maximum solids handling

0.8-3in

Maximum suction lift

26-28ft

Engine power

4.8-13hp

How EquipFlow handles centrifugal pumps on the dispatch board.

A centrifugal pump is the simple part of the assignment; the hose kit and the prime are where the return trips come from. The dispatch board treats the pump and its kit as one line, so the dispatcher confirms the suction hose, the discharge hose, the cam-lock fittings, the strainer, and a foot valve where the class needs one, on the rental record before the truck leaves. A pump dropped with too little suction hose to reach the water, or a straight centrifugal sent to a job where the supply sits below the pump with nothing to hold prime, is a wasted run and a crew standing around. The board shows which pumps are on location, which are headed back, and which are cleaned and ready, on the same responsive screen at any hour, since water calls come in early and on weekends. Because these are small, easily double-booked units, the board flags conflicts at the point of assignment rather than at the gate.

Billing centrifugal pumps — MSA, standby, and site-level tax.

Most steady pump demand in the oilfield is MSA-contracted, so the rate override lives on the customer record per equipment class rather than in a sheet the dispatcher keeps in their head. A centrifugal pump rental created for that account applies the negotiated rate automatically. When a pump sits primed and ready on a pad through a stage delay or a weather hold, standby is billed at a rate separate from active run time; the dispatcher marks standby and the invoice carries both lines without a month-end rebuild. Delivery and pickup charges and any hose-and-fitting add-ons ride the same invoice. Tax jurisdiction is set on the delivery-site record, so a pump that worked across more than one county still gets the right rate per site. Invoices post to QuickBooks Online on close.

Maintenance on centrifugal pumps.

Centrifugal pump PM is hour-meter driven, not calendar driven, because a dewatering or transfer job runs a unit around the clock while a yard spare sits dry for a season. The hour reading posts when the return inspection records it, and the maintenance module advances the PM clock from that reading so the next service falls on real run time. The wear story on a centrifugal pump is the mechanical seal, the impeller, and the wear ring — abrasive water erodes the impeller and opens up clearances, and a seal that ran dry weeps or fails outright — so PM leans on seal condition and impeller-to-volute clearance alongside the engine and oil service. Work orders, parts, and meter history live on the unit record, which is also where a damage charge from a return inspection becomes a repair ticket.

Centrifugal Pump return inspections.

Two inspection rhythms apply. The operator-facing pre-start check — prime the casing, confirm the suction is sealed, watch the discharge for steady flow — is the customer's responsibility while the unit is on rent. The yard's own control is the return inspection: before a centrifugal pump comes off rent, the driver runs a mobile-web checklist on a phone, no app install, captures the hour-meter reading, and attaches required photos that cannot be skipped. Pump-specific checks matter here — impeller and wear-ring condition through the inspection port, mechanical-seal weep, casing and volute erosion, suction-screen damage, and whether the full hose kit and fittings came back. The return inspection ties to the rental record before the truck leaves the customer site, so a dispute over a pitted impeller or a missing strainer has photos and a timestamp behind it.

Common centrifugal pump classes in the field.

The product, the same way it runs for centrifugal pumps.

The sections below are the EquipFlow modules that matter most when running centrifugal pumps — each links to the full feature detail.

Operator guides for running centrifugal pumps.

Field-tested playbooks that go deeper on pricing, dispatch, billing, and maintenance for fleets like this.

• Dewatering Pump Rental Guide →
• Equipment Rental for Oilfield Operations →
• How to Bill for Equipment on Standby →
• How to Handle Rush and Emergency Rentals →

What you give up running centrifugal pumps in EquipFlow.

EquipFlow is a web app, so the return inspection needs a signal to load. On a remote pad with no coverage, the driver cannot finish the mobile inspection on location; most yards run it at the yard on return, which means the photos and the hour reading land later than ideal. Smaller centrifugal pumps often have no hour meter at all, so run time is recorded by hand at return rather than read off the unit — the PM clock is only as honest as that entry. There is no built-in telematics today, so run time and fault data from a pump's own controller are not pulled automatically. And the rate logic is built around the MSA-and-standby model the oilfield runs on, so a yard with an unusual billing structure should bring it to the demo to be scoped honestly.