The item No.of ball bearing 608ZZ and 6202ZZ are widely used at water purify RO pump to get higher purified water all over the world.

Bearing is one of the critical component parts to work for the life of water pump.
The pump can have either two rows of ball bearings or one row of ball bearings and one row of roller bearingsHerein we discuss about one row ball bearing water pump especially.
The bearing is pre-lubricated with special grease which eliminates the need for maintenance, and is wrapped with anti-rust oil before ship-out from its bearing factory.
Booster pump to help you get clean and pure water.
What is a self-priming pump?
Self-priming pump refers to installing the self-priming pump at a position higher than the liquid level. After filling the pump body with water for the first time, starting the self-priming pump, pumping up and discharging the water, we call it a self-priming pump. The self-priming pump not only has the function of a self-priming pump, but also has the function of a booster pump, so we can also call it a self-priming booster pump.

The self-priming pump belongs to the self-priming centrifugal pump, that is, the pump is installed at a place higher than the liquid level. When the pump body is filled with water for the first time, the self-priming pump can pump up the water and drain it away. We call it self-priming. The self-priming pump can start running without refilling water when it is used again in the future. Whether the self-priming pump is self-priming depends on whether the impeller is soaked in water after shutdown. The self-priming pump has a unique pump cavity structure, which can ensure that the impeller can be immersed in water after each shutdown. It is guaranteed to be self-absorbing.

This kind of pump not only has the function of self-priming pump, but also has the function of booster pump, so we can also call this self-priming pump a self-priming booster pump. It has compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life and strong self-priming ability. There is no need to install a bottom valve in the pipeline, just make sure that there is a quantitative priming liquid in the pump before work. Various liquids can use self-priming pumps of different materials.
The difference between self-priming pump and booster pump
1. The self-priming pump has the functions of self-priming and boosting. The booster pump only has the function of boosting. It has no self-priming ability. Water must flow into the pump to play the role of boosting.
2. The pump can be pressurized, and the booster pump is also included in the self-priming pump, but the booster pump is not necessarily a self-priming pump. In layman's terms: the self-priming pump is a booster pump, but the booster pump is not necessarily a self-priming pump. One of them is that the water level in the middle section is higher than the pump body (booster pump), and the other is that the water level in the middle section is lower than the pump body (self-priming pump). It is best not to install the self-priming pump directly in the water pipe to avoid damaging the water meter. The glass shattered.
3. If the water flow is not cut off, the booster pump can be operated. If the water flow is not cut off, a container (pool, water tank, etc.) can be prepared. A drain pipe can be installed on the container to make the booster pump run. If the drain pipe cannot be installed, only self-priming can be installed. Pump.
4. The booster pump is a constant pressure device installed on the basis of the self-priming pump. That is to say, it can keep the water pressure in the water pipe relatively uniform, but due to the simple structure, it is not easy to control, and it is easy to burn the water pump.
When is it better to choose a self-priming booster pump?

The booster pump with self-priming structure should be selected as much as possible in the following situations to increase practicality and safety:
The pump is located above the sink (a device used to store liquids);
The pumped liquid is poisonous or smelly;
High temperature (too high temperature will affect the suction height).





