Valves are a set of breakers that are installed at the end of the water pipelines, which act to cut and connect the flow of water and adjust the flow intensity and composition of the hot and cold water together. Valves are usually manufactured and sold in a single factory, so it can be considered as a building component.
By usage, their function or form is classified into different subgroups.
In general, milk is divided into two types of hygiene and industry.
The sanitary valves operate, interrupt and connect the water flow and regulate the flow and composition of the hot and cold water together. In addition to this, another important health application is its effect on the beauty of the building's interior, and a very important other is water conservation.
Valves are generally made of brass or dry lead alloys and are the only coatings that make a difference. Between these two types of rice works better than dry lead. Lead is corroded after a while and it will also have health effects. For this reason, these types of valves are not standard approved and are considered unsanitary. According to the standards, all metal parts used in the manufacture of sanitary valves except for the brass alloy handle shall be.
All materials used in the manufacture of sanitary valves which are in contact with water must be of a sex-selective nature that is water-resistant to 2 ° C and in a use-free environment while not having any corrosion during use. It should also not be toxic and cause no change in the appearance, color, odor or taste of the drinking water. It should not lead to the growth of bacteria and endanger human health.
Industrial Valves :
Industrial valves are a device for controlling fluid flow and pressure. Industrial valves have many applications, including:
Complete disconnection and connection
Prevent the passage of liquids and gases passing by
Adjust the passage of the required amount of liquids and gases
Control and control the amount and pressure of liquids and gases
Control and keep the devices under pressure
Technical characteristics of industrial valves:
The materials used in the manufacture of industrial valves are different. Cast iron, bronze, brass and sometimes steel are used in construction work. In industrial works such as power plants, petrochemical plants, refineries, shipbuilding and the pharmaceutical and food industries, depending on the type of fluid passing through the milk or the environment in which the milk is contained, the body and other components are carbon steel. , Alloy steel, stainless steel.
Important Designs and Design of Valves:
Driving force and special launching equipment
The vibration of the valve
Impact on the flow
The amount of pressure tolerance
Seals and Consumables in Seals
Ease of maintenance and installation and adjustment
Different types of valves:
Manual valves: Hand valves that work with manpower.
Control valves: Automatic valves that work with controlled air, liquids and gases.
Electric motor operated valves: Automatic valves that work with electric power.
Components of the valve structure:
Disk: In ball and cone valves, the ball or cone is the same.
Seat: The seat where the disc is located or the interface of the body and disc. It is often made of soft material to do the sealing work.
Handle and latch: The latch is attached to the handle by the handle; it is usually opened or closed by rotating the valve latch.