How large a household booster pump should be used to solve the problem of insufficient household tap water pressure? In fact, it cannot be generalized and must be determined based on the existing water pressure situation. There are three main situations:

1. The water heater cannot be used normally. If the water pressure of the water heater is not enough to work properly, there is no need to pressurize the entire household water pipe network. It only needs to be partially pressurized in the cold water inlet pipe of the water heater to solve the problem. This kind of special booster pump for water heaters is small in size, has low power consumption, and is low in cost. Usually a 50-150 watt pump is enough, and the cost ranges from 200 to 400. Generally, the flow rate can meet the 9L/min of the shower head, and the pressure can be increased by approximately 1-1.3 kg, which can fully ensure the normal operation of the water heater.

2. The water pressure is low and the water flow is too small. Low water pressure and low water flow will also seriously affect daily life, such as washing vegetables too slowly and being unable to flush the toilet. This solution is more expensive than the solution introduced in item 1 above, because the flow rate of the booster pump is much larger, and noise issues must be considered. The water pump flow rate is generally at least 1-1.5 tons/hour, and the lift should be about 15 meters (that is, it can generate 1.5 kilograms of water pressure) to have a good experience. The power of the water pump motor with this parameter ranges from about 0.37-0.55 kilowatts. The water pump The water inlet and outlet interface is usually a 1-inch threaded opening, and a 1-inch opening needs to be added to change it to a 4-point opening (household water pipes are generally 4-point). If you don’t care about noise or water pressure stability, just buy a water flow pressure differential automatic booster pump that costs 300-500 yuan; if you mind noise and water pressure stability, then a variable frequency automatic booster pump that costs about 1,500 yuan. The pump is specially designed for you.

3. No water is available during peak periods. This situation is more expensive and complicated to solve because no water enters the network during peak periods, and even if you install a booster pump, it will be ineffective. Therefore, in this case, the booster pump must be installed outdoors on the first floor to ensure a continuous boosting effect. The water pump flow rate should also be 1-1.5 tons/hour, and the head should be 15-20 meters (that is, it can generate 1.5-2 kilograms of water pressure) to have a good experience. The power of the water pump motor of this parameter is about 0.55 kilowatts, and the water pump inlet and outlet The interface is usually a 1-inch wire opening, and a 1-inch opening needs to be added to change it to a 4-point opening (household water pipes are generally 4-point). It is not recommended to buy a cheap booster pump that costs 300-500 yuan for this kind of installation outdoors, because you have to consider the impact of noise on neighbors.