Build your power unit
Tell us what it must drive. The tool suggests the pump, motor, relief valve and tank, lists the parts, and lets you test the circuit in the simulator before you order. Our engineers cross-check the circuit and parts before we quote or process your order.
1 What does it drive?
2 Options
Accumulator
Cooling and duty
Electrical
Tank fittings, filters and instruments are listed with the parts and can be ticked on or off there.
3 Your sizing and parts list
Lines marked from your duty are specified for you and matched to the right part when we quote. The simulator shows how the circuit behaves. Always confirm the final selection with our engineers.
How it works
How is the unit sized?
We take the force and time you need, work out the pressure and flow, then pick the pump, motor, relief valve and tank from standard rules of thumb: pump efficiency 85%, relief valve set 20% above working pressure, tank about three times the pump flow per minute.
Is the price shown?
No. The page gives you a parts list. Send it and we reply with a quotation, because the pump make and the options change the price.
Can I change the list?
Yes. Optional lines such as the heater, level switch and pressure filter can be ticked on or off before you send it.
© 2026 HLA. The power unit builder and circuit simulator, including their calculations, are proprietary. Copying, scraping or reuse without written permission is not allowed.