Maintaining stable water level is an important condition for ensuring efficient operation of equipment in cooling tower systems. The Cooling Tower Float Valve, as an automatic water replenishment device, can accurately control the water level inside the tower, prevent insufficient water due to evaporation, floating or leakage, and thus avoid a decrease in circulation system efficiency or equipment damage. This article will comprehensively introduce the working principle, product characteristics, common types, and selection points of cooling tower ball valves, helping you quickly understand the core value of cooling tower ball valves.
What is a cooling tower float ball valve?
Cooling tower float ball valve is an automatic water replenishment valve that uses the buoyancy change of the float to control the opening and closing of the inlet. When the water level in the cooling tower drops, the floating ball descends and pulls the valve stem to open the inlet; When the water level recovers, the float rises and closes the valve, thereby achieving automatic water replenishment and water level control.
Core role:
1. Automatically maintain the water level of the cooling tower water tray
2. Prevent the circulation pump from running dry
3. Reduce manual inspections and water replenishment operations
4. Protect the stable operation of the system
Working principle of cooling tower float valve
Floating ball valve is mainly composed of floating ball, lever, valve body and other parts. The working process includes the following steps:
1.Water level drop:
When the evaporation capacity of the cooling tower increases or the system water consumption rises, the water level drops.
2. Float sinking:
As the water level drops, the float drives the lever to open the valve.
3. Automatic water replenishment:
After the valve body is opened, tap water enters the cooling tower water basin to replenish water.
4. Water level recovery:
After reaching the set height, the float rises.
5. Valve closure:
The float pushes the lever to close the valve and stop replenishing water.
The entire process does not require electric drive, is safe, stable, and easy to maintain.
Main characteristics of cooling tower float valve
1. High degree of automation
It can automatically adjust the water level without manual operation and is suitable for long-term continuous work.
2. Easy installation
Compact structure, often installed on the side of the cooling tower basin or in the inlet area.
3. Strong corrosion resistance
It is commonly made of materials such as PVC, ABS, stainless steel, brass, etc., which can adapt to the humid environment of cooling towers.
4. Long service life and low maintenance cost
The mechanical structure is simple, with a low failure rate, and only requires regular inspection of whether the floating ball and valve stem are stuck.
Common types of cooling tower float valve
1. Mechanical float ball valve
Directly control the valve body switch through physical buoyancy
Advantages:
Simple structure, low price, and stability
Application:
All types of cooling towers
2. Stainless steel float ball valve
Floating ball and valve body are mostly made of 304/316 stainless steel
Advantages:
High temperature resistance and strong corrosion resistance
Application:
Chemical and industrial circulating water system
3. High pressure float valve
Suitable for systems with high water replenishment pressure
Advantages:
Strong pressure bearing capacity
Application:
High rise buildings and industrial plant areas
4. High flow floating ball valve
Designed for cooling towers with high flow demands
Advantages:
Fast hydration speed
Application:
Large industrial cooling tower
Selection Guide for Cooling Tower Float Valve
Choosing a suitable float valve requires consideration of the following factors:
1. Determine the flow demand based on the cooling tower model
Insufficient flow will result in slow replenishment speed and affect the water level of the system.
2. Select suitable materials
1）PVC: Economical and corrosion-resistant
2）Stainless steel: resistant to high temperature and strong corrosion environment
3）Brass: Good durability, commonly used in engineering projects
3. Range of water replenishment pressure
Before selecting, it is necessary to confirm the water supply pressure to ensure the normal operation of the float valve.
4. Installation space and interface dimensions
Select the appropriate thread specifications and installation direction based on the tower structure.
5. Brand and Quality
High quality float valves are more durable and have better sealing, reducing the risk of leakage.
Maintenance suggestions for cooling tower float valve
1. Regularly check if the float is stuck
2. Clean the debris in the water basin to avoid affecting the lifting of the float ball
3. Check if the valve stem and connecting components are loose
4. Clean the inside of the valve body to ensure smooth water replenishment
5. Regularly replace seals to avoid leakage
