Software for the yard running transfer pumps.

A transfer pump is the unit a rental yard sends out by the dozen and rarely thinks about until one comes back seized. Its job is simple and the demand is constant: move water out of a hole, between tanks, or off a flooded site so a crew can keep working. The self-priming design lets the operator set the pump up on the bank above the water and let it pull its own prime, which is why it is the default tool for dewatering a trench, pumping down a sump, or shuttling water between frac ponds on an oilfield pad. That same simplicity is the trap. The unit is cheap, it travels with a kit of hoses and fittings that scatter, and it punishes a single dry run with a ruined seal. EquipFlow runs transfer 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 transfer 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.

A transfer pump earns little on any one rental, so the margin lives entirely in not losing money on the small things. The accessory kit is most of the risk: a pump that goes out without the right suction hose or comes back missing its strainer and fittings is a charge nobody captured and a unit nobody can re-rent. The bigger leak is run-dry damage — one operator who walks away from a pump that lost prime can cost more in a seal and impeller than the rental ever earned. Catching that at return, with a photo, is the difference between a damage charge and a yard write-off. When dispatch, billing, maintenance, and inspection all read from one unit record, the dispatcher sends the right kit, the bookkeeper bills the hose and standby, and the mechanic services against real runtime instead of a guess. For a fleet this cheap and this high-churn, that discipline is the whole game.

Transfer 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.

Max discharge capacity

164-319gpm

Max total head lift

82-92ft

Max suction head lift

25-26ft

Max discharge pressure

36-37psi

Engine displacement

122-163cc

Self-priming time at 16.4 ft

110-150sec

Fuel tank capacity

0.53-0.82gal

How EquipFlow handles transfer pumps on the dispatch board.

Transfer pumps go out in numbers and often as an afterthought on a larger order, which is exactly how they get lost. The dispatch board treats each pump as its own line, so the dispatcher can see which units are on location, which are staged, and which are overdue at any hour on the same responsive screen. The trap with pumps is the accessories: a pump sent without the right suction hose, discharge hose, strainer, or cam-lock fittings is a dead unit on a wet site and a return trip for the driver. The board confirms the hose kit and fittings on the rental record before the truck leaves. Because the same small-pump class is double-booked easily when several dewatering jobs land in the same week, the board surfaces the conflict at the point of assignment instead of at the gate.

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

Transfer pumps rent cheap and move in volume, so the money is made on getting the small charges right, not on a high day rate. In the oilfield, water-transfer and dewatering work usually falls under an MSA, so the negotiated rate lives on the customer record per equipment class and applies the moment the rental is created — the dispatcher never holds a rate sheet in their head. Suction and discharge hose, strainers, and cam-lock fittings are the easy add-ons to forget; EquipFlow rides them on the same invoice as the pump so they are not eaten as yard loss. When a pump is staged on a pad against a frac or a weather hold and runs only intermittently, standby is billed at its own rate separate from active hours, and the dispatcher marks it without rebuilding the timeline at month-end. Tax follows the delivery-site record, so a unit that pumped across more than one county bills the right rate per location. Invoices post to QuickBooks Online on close.

Maintenance on transfer pumps.

Transfer-pump PM is hour-meter driven where a meter exists, because a pump dewatering a trench around the clock burns through a service interval in days while a yard spare sits dry for a month. The runtime is captured at the return inspection and posts to the unit record, and the maintenance module advances the PM clock from that reading. The service itself is short but unforgiving: engine oil and the air filter on the small gas engine, the impeller and wear plate that take the abrasion, the mechanical seal that fails when the pump runs dry, and the gaskets behind the volute cover. The pull-start, recoil, and primer also live on the work order. Parts, meter history, and any damage charge that came off a return inspection all live on the same unit record, so a clogged-and-seized pump turns into a repair ticket without anyone re-keying it.

Transfer Pump return inspections.

Two rhythms apply, but the one the yard controls is the return inspection. Before a transfer pump comes off rent, the driver runs a mobile-web checklist on a phone — no app install — records the runtime, and attaches required photos that cannot be skipped. The pump-specific checks are what catch the expensive problems: whether the impeller spins free or is packed with grit, whether the mechanical seal weeps, whether the suction and discharge hoses came back and came back intact, whether the strainer is crushed or missing, and whether the cam-lock fittings and gaskets are all present. A pump that ran dry shows it at the seal, and the inspection is where that gets caught before it leaves the gate as someone else's problem. The inspection ties to the rental record before the truck leaves the site, so a damage charge has a photo and a timestamp behind it.

Common transfer pump classes in the field.

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

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

Operator guides for running transfer 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 →
• Managing Recurring Rental Customers →

What you give up running transfer 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 at the customer site; most yards run it at the yard on return instead, which means the runtime and photos land later than ideal. Many small transfer pumps have no hour meter at all, so runtime 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 telematics pull for pump runtime or fault data today. 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.