A half-horse-power pump is made for regular municipal water pressure of about 30psi. This is what is found in a backyard spigot at a residential home. If this ½ HP pump is used on a water main - running at 70 or more psi - the pump will be drowned.
0.5 HP - 2 HP Domestic Pressure Pump, Pressure: 0.7 PSI - 4.5 PSI.
A 1/2 horsepower submersible pump can lift water from your lake to a height of 35 ft but you may need a more powerful pump depending on the flow rate in gallons per minute that you require. @Anthony, First we need to know what is limiting the well's output.
Kirloskar V Flow Water Pump 0.5 HP (Max Pumping Height - 34 M, Max Flow Rate - 2400 LPH)
3/4 HP - 1 HP Submersible Sump Pumps
In addition, if you have an installation where you need a high vertical lift or head (20-30 feet) and/or a long horizontal run (150-250 feet), 3/4 - 1 HP pumps provide the additional power needed to pump that water.
Normal psi for a home pipe system is between 30 and 80 psi. While you don't want the psi to be too low, it violates code to be above 80. Instead, you should aim for a psi that's between 60 and 70.
The ideal water pressure for a house will be somewhere in the range of about 45 to 65 psi. Anything higher than 80 psi can cause damage, and anything much lower than 45 psi may result in issues when you use your shower, toilet, dishwasher and other water-consuming appliances.
According to statistics, water pressure above 80 psi (pounds per square inch) causes the failure of water fixtures. The most common signs are spitting or leaking faucets, especially if it's out of the cold tap.
With an open impeller, flow rate of up to 2800 GPH and max lift up capacity of 25FT, this 1/2 HP submersible water pump can make standing water disappear quickly, eliminating the danger of flooding.
We can say that 1HP water pump can ideally lift ranging from 15-50 meters and maximum flow can be calculated in litres per minutes i.e., 100-500 LPM. This is the whole difference between 0.5HP and 1 HP. So, one must choose the water pump depending upon the requirements.
Residential water pressure tends to range between 45 and 80 psi (pounds per square inch). Anything below 40 psi is considered low and anything below 30 psi is considered too low; the minimum pressure required by most codes is 20 psi. Pressures above 80 psi are too high.
Water pressure over 80 psi can cause damage to your home's plumbing fixtures, including anything with a rubber gasket. Common problem areas include: water heaters.
Normal water pressure range
In general, residential water pressure ranges between 45-80 psi (pounds per square inch). If your water pressure is under 40 psi, it's considered low. A psi between 20-30 is considered very low, and under the minimum water pressure required by most building codes.
Expensive Water Bills: If your water bills seem a lot higher than expected, you're using more water than usual. This can be a sign that your pressure is too high. Clanging Pipes: As high-pressure water moves through your plumbing, it doesn't have enough room to move evenly.
Normal well water pressure should fall between 40 and 60 psi, so if your pressure is outside the normal range, adjust the pressure switch.
If the pressure of the water entering your house is 100 psi or above, it can damage the plumbing. The pressure will cause dripping faucets and leaks in the pipes. It's also harmful to water-using appliances, such as water heaters, dishwashers, and laundry machines.
The pressure level can vary, but 60 PSI (pounds per square inch) is recommended for most residential homes. Water pressure should not be higher than 80 PSI. Anything higher can cause major appliances, including water heaters and toilets, to stop working properly because of the stress on plumbing and other parts.
Pressures above 80 psi are too high. Whereas low water pressure is more of a nuisance than a serious problem (some fixtures, like washing machines, have minimum pressure requirements), high water pressure carries with it a significantly increased risk of damage to pipes, joints, fixtures and seals.
High pressure inside the pump stresses the impeller unit and thus increases pressure on the motor bearings. In the extreme case, this will cause damage to the pump and motor. If the flow rate is below the minimum flow rate required for the pump, the pumped medium may also overheat and damage the pump.
The maximum recommended water pressure for homes is 80 psi; any pressurization exceeding this amount will result in thousands of wasted gallons of water each month.
A 1 hp submersible pump can typically pump 4 to 40 gpm - depending on several variables - see the table at the end of the article above. There you'll see that a 1/2 hp pump at 125 ft. is able to deliver about 7 gpm and is at the upper limit of its capacity.
Kirloskar Mega 54S 1.5 HP Water Pump (Max Pumping Height - 52 M, Max Flow Rate - 4500 LPH)
If the depth of your well is between 25 and 110 feet, you should use a deep well jet pump. If the depth of your well is between 110 and 400 feet, use a four-inch submersible pump.
Water has the unfortunate quality of being heavier than air. In fact, it weighs 62.4 pounds per cubic foot. This mass requires a pressure of 0.433 psi to lift water one foot (62.4 lbs/144 in in ft). To put it another way, one psi will lift water 2.31 feet (1/0.433).