Water Tank Motor Filling Time Calculator

Find out how many minutes your water motor pump takes to fill your overhead Sintex tank with BharatUtility's Water Tank Filling Time Calculator. Calculates discharge rate, delivery head height, and power units per fill.

Interactive Water Tank Motor Filling Time Calculator
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Formula & Calculation Methodology

Filling Time (Minutes) = Tank Capacity (Litres) ÷ [Motor HP × 50 LPM × Height Head Factor × Pipe Factor].

Step-by-Step Worked Example

Tank: 1,000 Litres | Motor: 1.0 HP | Delivery Height: 30 Feet (2nd Floor)

  1. Effective Flow Discharge = ~46 Litres / minute
  2. Filling Time = 1,000 Litres ÷ 46 LPM = ~22 Minutes
  3. Electricity Consumption = 0.746 kW × (22 ÷ 60) = 0.27 Units (~₹2 per fill)
Result: Filling Duration: 22 Minutes | Power Used: 0.27 Units (₹2.00)

Optimizing Overhead Water Tank Filling

Using a 1.0 HP monoblock or submersible pump with standard 1-inch CPVC/PVC delivery pipes fills a 1000-litre tank in approximately 20 to 25 minutes on average 2-3 storey buildings in India.

Frequently Asked Questions

How much electricity does a 1 HP motor use per tank fill?

A 1 HP motor running for 22 minutes consumes only about 0.27 units (kWh) of electricity, costing less than ₹2.50 per fill.

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