Control Valve: Flow & Pressure Control Water Systems
Water Treatment & Purification: Hydraulic & Pneumatic Valves
Control valves are widely used to pressure control, flow and temperature of water systems. They are extensively used in maintaining water quality parameters and water purification. Control valves have full or partially opening or closing in response to signals received from controllers that monitor changes in conditions such as the pressure control, flow and temperature of water. Electrical, hydraulic or pneumatic actuators generally use a control valve. Positioners are used to control the opening or closing of the actuator based on electric, or pneumatic signals. Control valves can work with hydraulic valves, actuators and they are also known as automatic control valves. They do not require an external power resource, and the fluid pressure is enough to open and close the valve.
Water is one of the most important resources available to humanity and thus, conservation of water and water purification is essential. With the global water crisis and countries looking for new alternatives to fresh water like seawater desalination, reverse osmosis etc, having proper systems that can conserve water has become very important. Today, water-suppliers not only have high costs for providing water supply but they take an equally high price for water treatment and water purification as well.
Read the articles in our IDS water website to know more about the different water treatment products and services. If you are looking for water treatment products, at IDS Water we have them all, and much more. Our aim is to provide you with the best services available for water related requirements. We can connect you to our vendors and suppliers at the best costs and rates. They can provide you with water related products such as control valve, hydraulic control valve, pressure control valve, pneumatic control valve, steam control valve, automatic control valve etc. You can also avail various water related products, water testing and water treatment kits from our network of vendors and suppliers across the country and worldwide.
Control Valve Purpose: Water Treatment & Purification Systems
In water purification systems, control valves play a very important role. Water conservation is the primary goal for a water system and having it in the right place is of primary importance. The biggest purpose of using control valves or hydraulic valves in water purification systems is for water flow control. By regulating the water flow, one can control the speed of an actuator. The water flow also determines the rate of energy transfer at any given pressure control valve. The thumb rule is that the rate of energy transfer must be equivalent to the amount of work done.
There are different types of flow measurements that are involved in water quality parameters. It is important to understand how flow measurement can affect the water conservation process. The different types of flow measurement systems can be classified as follows:
- Volumetric Flow Rate: It is the measure of flow of water in terms of the volume of water. It is used to calculate the linear speed of piston rods or linear shafts.
- Weight Flow Rate: The weight of water that flows through a channel per unit time can be described as the weight floe rate of water. The weight flow rate can be associated to the power of the water system.
- Mass Flow Rate: The mass of water that flows in a channel is different from the weight. The viscosity of water plays a huge role in determining the weight of water. On the other hand, the mass of water determines the rate of flow. It can be used to calculate inertia of forces.
- Other Systems: In many systems, such as a hydraulic circuit, the flow directly affects the function of actuators. The flow rate is an important among the various water quality parameters.
In many systems, the flow of water directly affects the function of actuators. A basic water flow control valve has apertures that opens to increase flow rate or closes to slow flow rate, thus maintaining a control over the flow rate of water.
Pressure Control Valves Types: Globe, Gate, Ball & Butterfly Valves
There are different types of control valves used for different purposes. Not all control valves have the same functionalities. The uses of control valves differ from place to place and in use. The different types of pressure control valves available in the market are gate valves, globe valves, butterfly valves and ball valves. They have different uses depending on specific applications.
- Globe Valves: They have very responsive control but they have very high pressure drop on the other hand.
- Gate Valves: They are less responsive near full open. They have lower pressure drop as compared to the Globe valves but with a high amount of torque.
- Ball Valves: They have the lowest amount of pressure drop and low torque as compared to all the other form of valves.
- Butterfly Valves: They have a medium amount of pressure drop. The main advantage of using a Butterfly valve is that it is highly cost effective.
Size, pressure control, flow rate, CV flow, trim and stem sealing are some of the factors that you need to look at while selecting different types of control valve. There are number of corrective measures that one needs to take to reduce power losses.
Hydraulic Control Valve & Pneumatic Control Valves
Hydraulic control valve and pneumatic control valves are the main kinds of control valves used in the market today. The difference between hydraulic and pneumatic control valves is that hydraulic system uses water or liquid to transmit force. A pneumatic system uses air to do the same. This difference can be attributed to the fact that air is elastic and in the performance of the two water control valve systems. Overall, the pneumatic system is fast but at times it can get abrupt in terms of performance. On the other hand, hydraulic control valve can smoothly handle loads. There can be some pressure related issues in using hydraulic control valves but everything has its pros and cons. Selecting a hydraulic control valve or pneumatic control valve depend on your needs and specifications.
If you intend to set up a water treatment plant or something similar, having a proper knowledge of the various equipments used in a water treatment plant is essential. If you are looking for control valve suppliers or other water related equipments, at IDS Water we have them all and much more. Our primary focus is to provide you with the best products and services at reliable costs and estimates.
We can connect you to our network of vendors and suppliers and suppliers for costs, estimates and rates. You can select the best prices from the estimates that we have. We have a stock of other water testing kits as well. Keep reading the articles that we have in our IDS water website to know more about water treatment plants and methods.
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