DAB Esybox Variable Speed Water Pressure Booster Pump for Home, 92 PSI Max Boost - 32 GPM Max / 2.1 HP - 230V 1Ph / 60212311

Comprehensive pressurisation system requiring no additional components at installation. Combines a multistage self-priming pump with electronic inverter control, flow and pressure sensors, high-resolution LCD display and an integrated 0.5-gallon expansion tank. Water-cooled motor with sound-absorbing ABS hull produces only 43 dB.

Up to four Esybox units pair wirelessly into one system — no external controller, no panel, no rewiring. Buy one now and add units as demand grows. The group picks a lead pump, stages the others in as flow rises, rotates the starting order so wear is shared, and holds one in reserve if you tell it to. The ESYTWIN dock (60162081) mounts two side by side on a common manifold; ESYDOCK (60150514) gives a single unit four plumbing orientations.

Two pumps hold more pressure at the same flow. Each one carries half the water, so each sits higher on its own curve. Read it off the published curve below: 21 GPM from a single Esybox comes out at 50 psi; split between two units it comes out nearer 81 psi — and four units carry four times the water. The one figure that does not rise is the shut-off ceiling at zero flow, which stays at 85 psi however many units are in the group. One unit that cannot keep up at peak is a reason to add a second identical one, not to buy a bigger pump.

Group figures are read from the published single-pump curve at the flow each pump carries. DAB publishes no combined performance table for grouped Esybox, so size a group against the system curve rather than by multiplying a single-pump maximum.

How to Connect Multiple DAB Boosters

The figures below are the pressure this pump adds. That is what a pump curve measures — the impeller does not know what pressure is already on its inlet.

Pressure added in PSI, by flow

Converted from the head DAB prints in feet (PSI = ft ÷ 2.31). DAB also tabulates 2.6, 7.9, 13.2, 18.5, 23.8 and 29.0 GPM; those points are in the Technical Sheet on the Data Sheet tab.

Drawing from a tank, cistern or well — nothing arrives with pressure, so what the pump adds is what you get. Read the table straight through: set to 60 psi, it delivers about 18 GPM.

Fed by a city main — the pump adds on top of what already arrives, but the controller will not hold more than 85 psi in total. On a 40 psi main set to 60 psi, the pump only has to add 20 — and at 20 psi of added pressure the table gives you roughly 28 GPM instead of the 18 GPM a tank would. Incoming pressure turns into extra flow at the same set point.

Best operating range: 11 to 19 GPM. This is where the pump turns the most electricity into water pressure. Ask for more flow than it can deliver at your setting and it runs at full speed continuously, which is where motors and seals wear out. Sizing a booster to the building rather than to the headline numbers is what makes it last.

Zero flow is the shut-off point — a ceiling, not a working point. DAB gives the maximum flow as 32 GPM; its table ends at 31.7 GPM. These figures are at full speed; the drive holds lower pressures by running the pump slower. Feet of head = PSI × 2.31. Best operating range is derived from the published duty points — DAB does not publish an efficiency curve for this model. Source: DAB E.SYBOX Technical Sheet 60172910-USA.

Parts in contact with the liquid, per the manufacturer technical sheet.

This pump connects to H2D, DAB’s official app, which replaces DConnect.

• Free: guided setup, live status and basic parameters, error overview and alarm alerts.
• Free: Power Shower, Good Night quiet mode and monthly water-use tracking.
• Premium subscription: change settings and manage the pump from anywhere, full alarm and usage history, data-log analysis and PDF reports.
• H2D Desktop opens the same installations on a tablet or computer.