3HP Submersible Pump for Deep Well Applications in the Philippines

A deep well submersible pump sits below the static water level inside the borehole and pushes water up the riser pipe. It does not try to pull water from the surface, which is the reason it works where a jet or centrifugal surface pump does not.

Suction lift is limited by atmospheric pressure, and in practice a surface pump loses prime somewhere around 7 to 8 metres of vertical lift once pipe friction and fitting losses are counted. Productive boreholes in Luzon, Visayas, and Mindanao commonly sit well below that figure, so the pump has to go down the hole. Three horsepower converts to roughly 2.2 kW of rated motor output. That is the size band where a deep well stops being a household fixture and becomes a commercial asset: the point at which buyers start asking about duty cycles, motor protection, and spare parts availability rather than just price. JOHOB Hardware Trading supplies pumping and pressure systems, including booster, transfer, and submersible units, to commercial, industrial, and institutional buyers across the Philippines. We source from PH and China factories and deliver with local warranty and after sales support, which is the practical difference between a pump that gets serviced and a pump that gets replaced. Pricing on this class of equipment is quote based, and we respond to RFQs within one business day.

Horsepower alone does not tell you whether a pump will work. The number that decides selection is total dynamic head, which is the sum of five components. First, the static water level, meaning the depth from the wellhead down to the resting water surface, not the total drilled depth of the borehole. Second, drawdown, which is how far the water level falls once you start pumping at the target flow rate. Third, the vertical rise from the wellhead up to the discharge point, which for a rooftop tank on a mid rise building can be larger than the well depth itself. Fourth, friction loss through the riser pipe, horizontal run, elbows, check valve, and gate valve. Fifth, any residual pressure required at the discharge, converted to head at 10.2 metres per bar or 0.703 metres per psi. Add those five and you have the duty point that the pump curve must satisfy at your required flow. A 3HP unit that is correct for 40 metres of head at high flow is the wrong unit for 90 metres of head at low flow, even though the nameplate is identical. Send us the borehole log, the static water level, the drawdown test result if you have one, the required flow, and the discharge elevation. We confirm the exact curve and model against those figures at quotation stage rather than guessing from horsepower.

Philippine distribution is 60 Hz, and that matters when specifying a submersible motor because a 50 Hz motor run on 60 Hz shifts the entire pump curve. At 3HP you are at the crossover point between single phase 230V service and three phase 380V or 400V service. Single phase is workable, but the starting current is higher, the control gear is bulkier, and the motor runs hotter under the same duty. Where a three phase supply is already available, which is normal on commercial, industrial, and institutional sites, three phase is the better specification at this size. The pump is only half the package. A submersible motor sitting 40 or more metres down a borehole cannot be inspected casually, so the protection has to be built into the panel: overload protection, low water or dry run cut out, phase failure and phase reversal protection on three phase supplies, and a starting method appropriate to the site, whether direct on line, star delta, or a VFD soft start. JOHOB supplies electrical panels including VFD, SDE, star delta, and MCC configurations, built with Inovance VFDs through Chutian, and carrying CE marking on the electrical assemblies, including the VFD duplex control panel. Specifying the pump and the panel together from one supplier removes the finger pointing that follows a motor burnout when the pump and the controls came from two different vendors.

We are a Philippines based industrial equipment supplier serving commercial, industrial, and institutional buyers. On the pumping side we source from established pump brands including Grundfos, DAB, and Speroni, and from CDL for Chinese engineered vertical multistage pumps where the application suits it; the wider range is on our page for commercial booster pumps. Our sourcing runs across both Philippine and China factories, which lets us put more than one option in front of you at different price and lead time positions rather than pushing whatever single line we happen to hold. Equipment we supply carries manufacturer level quality documentation appropriate to the item: ISO 9001 quality management systems at the manufacturer, TUV SUD testing where applicable, and CE marking on electrical assemblies. We ask for and pass through the documentation rather than summarising it, so your engineer or consultant reviews the actual certificates. Every unit is delivered with local warranty and after sales support, which is the reason buyers choose a local supplier over a direct import on equipment that is expensive to pull out of a borehole. Pricing is quote based and we do not publish price lists, because the correct answer depends on head, flow, phase, cable length, panel specification, and delivery point. Send those and we come back within one business day.

Standard lead times run 21 to 35 days for ex stock items and 45 to 90 days for made to order configurations. Which band you land in depends on whether the pump, motor, cable, and panel combination you need is a stocked configuration or a build. If your project has a fixed turnover date, tell us at RFQ stage and we will scope toward the ex stock band where the hydraulics allow it, rather than quoting a made to order build you cannot wait for. On tax treatment, 12 percent VAT applies to VAT registered buyers in the normal case. Zero VAT applies to PEZA and SBMA locators and to registered exporters, so if you are inside an economic zone, say so on the RFQ and we will issue the quotation on the correct basis from the start instead of reissuing it later. We deliver nationwide: NCR, the rest of Luzon, Visayas, and Mindanao, including PEZA, SBMA, and Clark locations, alongside our provincial coverage as a pump supplier in Pampanga and Clark. Zone deliveries carry documentation requirements that a general hardware supplier will not have handled before, and getting the paperwork right the first time is usually worth more to a project schedule than a small unit price difference. RFQs are answered within one business day.

A common and expensive mistake is asking the deep well pump to do the whole job. On most Philippine commercial installations the correct design splits the duty in two: the submersible pump lifts groundwater from the borehole into a storage tank, and a separate booster set pressurises the building from that tank. This is not just a code preference, it is a reliability decision. Sizing one submersible pump to serve peak building demand directly means it cycles constantly against changing draw, and a motor sitting at the bottom of a borehole is the single most inconvenient component on the site to replace. Storage between the two stages absorbs demand variation, gives you buffer capacity during a power interruption or a pump fault, and lets the well pump run at a steady duty point where it is efficient. It also lets you size the well pump to the borehole yield rather than to the building. We write our system designs against the National Plumbing Code of the Philippines and the National Building Code, and we supply the whole chain: submersible and transfer pumps, commercial booster sets, the hydropneumatic pressure tank, complete pump system packages, and modular water storage such as the FRP modular water tank through our TankSmith sister brand. If you are unsure which part of that chain your 3HP requirement actually belongs to, send the site details and we will scope it.

• Pumping and Pressure Systems
• Commercial Booster Pumps
• Pressure Tank Sizing Calculator
• Guide: How to Size a Booster Pump
• Pump Supplier, Pampanga and Clark

Reviewed: August 2026