To ensure the normal operation of the water heating and plumbing, should be installed in the system when the air valve arrangement. This device is designed to remove air from the system or its individual elements. Another name parts - air vent. Putting it in the water or the heating system, it is possible to stabilize its operation. Also will protect it from oxygen drops and its transition to a free state.
Product specification and functionality of the air valve
To water supply and heating system to function properly, the master recommended to install the air valve. This device allows to save electricity by accumulation of free air, so protect against breakage. The presence of air bubbles, pockets, as well as contribute to the appearance of the vacuum damage. Depending on the type of air vent, its functionality will change, but the technical parameters remain the same:
- Material. The main raw material for the production of a nickel-plated brass. Sometimes manufacturers use bronze, but the products are rare and are of high value.
- editing features. Air vent must be installed at the highest point of the heating system or a water supply.
- The maximum pressure for the heating pipes - 10 bar.
- Fluid temperature is from 100 to 120 degrees.
- The outlet nipple may be placed on top or side.
- The diameter of the connection pipes is equal to ½, ¾, 1 inch or 3/8.
- Models can be angled and straight.
- The float inside the structure is made of polypropylene or Teflon.
- Component life up to 30 years.
Dampers are represented by small-sized devices that can be self-installed in the system. They perform the function of the air exhaust pipe, preventing accumulation of air pockets.
Design features
The principle of operation is based on the use of force of gravity of the float. If the float is in the raised position, the valve is closed. If the valve open, the float drops. Inside the structure comprises a rocker arm, which is connected to the spring-loaded spool. On admission of air in the float starts to shrink down valve opens, providing a hole for exit of accumulated gas. The principle of operation of the air valve can be seen that as the air release body is filled with water and the valve closes automatically.
On fitting has a cap - it serves as a safeguard against loss of heat at possible malfunctions. Also, the cap protects against dust and dirt, not allowing them to penetrate into the system when venting. For example, an automatic air valve itself controls the air vent. It can operate at a temperature of from -10 to +110 degrees, so set as to the water supply and heating.
The main types of air vent
Automatic air valves allow you to remove accumulated gases in the tubes, preventing them to come to a fault. On sale are 3 types of air vent - lever, membrane and cylindrical.
lever
Located inside the structure a linkage is more sensitive to pollution of the working environment. The apparatus is considered productive used in pipelines and heating systems using water.
Traditional lever air vent consists of:
- brass body;
- hollow plastic float moving inside;
- rocker, which is pivotally connected to the float;
- elastomeric valve located at the end of the beam;
- spring-loaded springs;
- lockable holder;
- linkage.
Together with a decrease in water level, the float starts to fall and pulls the lever. That, in turn, opens the oval outlet. Through such a process the excess air flows out. Such devices are considered common and suitable for water or heating system.
membranous
membrane-type diffusers are made from polyvinyl chloride. The most common use case - Login, where you need to get rid of excess air and air pockets and prevent pressure drops. Some masters suggest the use of a bypass valve, which supports the fluid pressure at the required level. This happens due to the bypass through the pipe branch. The resulting air can not enter again into the system due to the closing of the hole membrane.
Cylindrical
Air vent structure has an elongated cylindrical shape. Such models are often done automatically in their float device is in the form of a cylinder. Models have lateral or direct connection, in their structure has a housing with a lid, a float, a jet and valve spool. Located at the bottom shut-off valve, through it you are connecting products to the plumbing or heating. The design must be present sealing ring, protecting it against leakage.
Types of locking mechanism
All existing air heating valves, sewer or water pipe may be divided according to the design of the locking mechanism. Allocate such types:
- Rotary. Models are fixed on the pipeline due to the sidebar. To control the flow of air is used or a slide lever. When there is a strong air flow, making the spool rotate, air passes. This type is considered to be safe and reliable.
- Ball. Such valves are convenient to use on small diameter pipes. The mechanism consists of a ball and a spring, they control the flow of water and air. It is appropriate to apply the device to the system before the wash basin or a shower.
- Lifting. If the apartment is installed with a wide vertical riser pipe diameter, the lifting type of locking mechanism is necessary by the way. The essence of the job is to change the position of the membrane made of polyvinyl chloride. Feed device lifts from below, but by lifting his back constrain reliable fasteners.
- Wafer. Small air valve type wafer is mounted via threads, it can be used in water pipe of plastic or metal. The flexible membrane is the working part of the mechanism changes its position under the influence of water flow.
Great choice of air valves can be found in stores plumbing fixtures. The buyer needs to decide in advance what kind of product you need for installation in water supply, sewerage or heating.
Applications dampers
Devices common to use in sewage systems, heating and water supply. The main task of the valves - prevent ingress of air into the pipe, and if he still was there - bring it, ensuring the proper functioning of the system without interruptions and breakdowns.
This shut-off valve is used in these situations:
- If the plumbing is located far from the total riser.
- If drainage is not provided with adequate ventilation.
- If the system has a predisposition to the collapse of volley.
The air valve will protect the pipeline from damage, because it will help to stabilize the air pressure. Various models will allow to modernize the system. Application kinetic air valve warrants vacuum formation. It is used for the intake and exhaust air in the system before it is filled with liquid. The use of air valves with electric drive will not control the process air flow changes as the device will do everything yourself.
Advantages of using the device
Before installing the valve in the air such as water or heating, it is necessary to understand the basic advantages of all models. The main advantage of the use of products will be a timely warning of the system failure, because the design does not give air to disrupt the normal operation of the pipeline. Another bonus - the prevention of odors from the sewer pipe, but this is also necessary to organize the normal ventilation in the apartment.
Installation of aerator can save on a possible subsequent repair and permits do not show the street vent stack. Use such a valve can be on the heating system and plumbing. The device provides a stable smooth operation of all systems.
Basic rules of installation
It needs compensating pipe, clamp, couplings, tools for cutting pipes. If the valve is mounted in a new sewer system, the tools do not need - all done by hand.
Work algorithm:
- shut off the water in the system;
- make a cut in the selected pipe portion;
- delete the portion of the pipeline, which valve is identical in size;
- install the air valve and fix it with clamps;
- fill all joints with sealant;
- perform a system check: open the valves on the heating pipes and fill fluid, checking for leaks.
When installing the device in the sewer, you must connect the water supply and drain the tank several times. The valve is adjusted manually, and if the unit is equipped with elektrozatvorom, the process is automatic.
With self-assembly, many apartment owners make mistakes. For example, it is cleaning the joints to the pipe before installation, which leads to accumulations of waste. One of the shortcomings - the presence of chamfers, which must be removed before assembling the pipe connection. Do not forget that the air valve must be fixed at the highest point of the system.