Classification of water supply equipment

1. According to form, they can be divided into vertical, horizontal, ball-shaped, and combination types.

Most pressure water tanks are designed vertically, with a cylindrical body to minimize the contact area between air and water. This reduces the amount of air lost through the water, which is beneficial for replenishing the pressure water tank. The disadvantage is that the tank is relatively tall, requiring a high ceiling if installed indoors. Sometimes, pressure water tanks need to be designed horizontally. Horizontal tanks have a larger contact area between water and air, resulting in more air loss and making them less suitable for replenishing the pressure water tank.

Compared with other pressure water tanks, spherical tanks have advantages such as advanced technology, economic rationality, and beautiful appearance. However, the manufacturing of spherical containers currently generally requires large hydraulic presses and expensive molds to press curved spherical lobes and heads, thus...

Its application range is limited. The manufacturer combines the pressure tank, water pump and electrical controller into a steel frame, which can be used on site by connecting to a water and power source. This is called a modular pressure tank.

2. According to the air-water contact method, it can be divided into two categories: air-water contact type and diaphragm type.

a. Contact type: Compressed air in the pressure tank comes into direct contact with water. Due to leakage and dissolution, air is gradually lost from the tank. For proper operation of the water supply system, timely air replenishment is necessary. Additionally, the tank must be pre-charged to achieve the predetermined P0 or β value before operation. Because contact-type pneumatic water supply equipment continuously dissolves air into the water, there is a potential risk of water quality pollution, and it may cause inaccurate water meter readings. Therefore, its use in domestic water supply systems should be approached with caution.

b. Diaphragm type: The pressure tank contains a rubber bladder-type elastic diaphragm, which divides the tank into an air chamber and a water chamber. The water volume is regulated by the expansion and contraction of the bladder. It can be inflated once and does not require additional air supply for long-term use. There are seven types of bladder-shaped diaphragms: bulbous, pear-shaped, bucket-shaped, tubular, bag-shaped, folded, and gallbladder-shaped. The water volume is regulated by the folding or expansion of the bladder.