Reverse sewer valve: installation, operating principle

In the sewer systems, valves of the reverse type are often used. They differ in terms of parameters, as well as design features. Some devices are suitable for small country cottages. Their throughput is low. The standard inverse type valve includes two chambers, a holder, a diaphragm, and a float mechanism.

Plates are installed in different widths and are made of steel or brass. Many models use a screw clamp to securely fix the tube. The first chamber uses a small ball to stabilize the pressure. There is a good return sewer valve (market price) about 800 rubles.

Principle of work of models

The principle of operation of the reverse-type valves is based on changing the pressure inside the sewer system due to the plates. In the first chamber, water retention and filtration take place. In this case, the masses from the first chamber are not able to return to the branch pipe. The float mechanism of the device is a stabilizer. With a large volume of waste water, the membrane is activated. The holder in the device is necessary for its fixation. The sewage outlet is carried out through the branch pipe, which is located behind the plates.

Installing the device

To install valves of the opposite type on sewer pipes, clamping rings are often used. Screws are used in various diameters. If you look at the pipes at 5.5 cm, then you need two rings. First of all, the inlet branch pipe of the primary chamber is fixed. Then inspect the float level. All valves are tested before use. The outlet pipe is installed last. When leakage is detected, the clamping rings are changed.

Coupling modifications

When internal plumbing and sewerage of buildings are blocked, couplings are used. Quite often they are used in apartment buildings. Cases for models are made only on two cameras. Float mechanisms are standard ball type. For sewer systems for 2 bars, the devices are excellent.

Many models use two steel holders. The outlet nozzles are installed in different sizes. For the installation of valves of the opposite type, clamping rings with a screw connection are used. Pipes are often connected to the primary chamber. The ultimate pressure of the device depends on the size of the plates.

Models with one holder are allocated with low bandwidth. Membranes are often clogged. For sewer systems for 3 bars, the devices are not suitable. It is also worth noting that it is forbidden to mount the muff-type models in an upright position. There is a good modification on the market about 860 rubles.

Flange devices

When the internal water supply and the sewerage of buildings are clogged, a flanged valve of the reverse type is used, which is suitable for pipes of different diameters. The carrying capacity of the models is quite high. Fittings are used both steel and aluminum type. Models with longitudinal holders are rare. Many models are perfectly suited for sewer systems of 3 bars. Holders of modifications are applied with and without fasteners. Enclosures are standard with two cameras.

Models with convex membranes are often encountered. The throughput of sewage at them is at a mark of 5 microns. Directly float modifications are installed in the primary chamber. Balls are used by air type. Many models use holders with a short rack and are fixed. Devices for sewer systems for 2 bars stand on the market for about 1200 rubles.

Models from steel

Sewer clogs are often removed thanks to steel valves, which are highly resistant. Holders for models are manufactured with different racks. The size of the model is quite different. Many devices are equipped with two couplings. The float balls are mainly in the primary chamber. For sewer systems of 2 bars, the modifications are excellent.

Fittings with holders are not installed in all models. Many of them are manufactured with screw fastening. The clamping force of the devices fluctuates around 5.5 N. The outlet nozzles are installed on one or several rings. For sewer systems of 3 bars, only devices with large projections are suitable. The capacity indicator must be at least 4 microns. The stiffness of the nozzles depends on the manufacturer. The standard steel valve on the market costs about 700 rubles.

Cast-iron devices

Cast iron valve (reverse, sewer) in our time is found quite often. Many models are produced with a coupling device. For a horizontal installation on the riser, they fit perfectly. The holders are mainly used with screw connectors. Primary cameras are used in different sizes. Many models are made with holders on short racks.

Membranes are used with and without fasteners. On sewer systems in 3 bars, the devices are installed quite often. In service they are simple. However, it is important to note that they have a small clamping force. The price for a good air sewer valve fluctuates around 900 rubles.

Models from brass

In apartment buildings, sewer obstructions can be removed with the help of brass valves of the reverse type. The clamping force of the devices is on average 7 N. Many models use two chokes. Modifications with extension cables are rare. Primary valves are always made with a float. The indicator of the maximum pressure depends largely on the manufacturer. Coupling modifications are very rare. Not all models are suitable for horizontal installation. Fittings are produced with or without racks.

Holders for many models are of fixed type. To install the reverse valves on the riser, several clamping rings are used. There are many models with adapters on the market. The average diameter of the outlet pipe is 6 cm. The holders are often used in the secondary chamber. There is a good valve (reverse, sewer) in the area of 1200 rubles.

Bronze models

A bronze valve for the sewer in the store costs quite a lot. However, it is important to note that it is distinguished by increased resistance to corrosion. Many models are equipped with choke mechanisms. Modifications with double couplings are also not uncommon. The average diameter of the outlet pipe is 5.4 cm.

Modifications are made only on screw terminals. Holders are often installed in the secondary chamber. Racks under them are quite wide. The clamping force of devices fluctuates around 5 N. For holiday homes, models of this type are purchased very rarely. Modifications with two floats are infrequent. The price for a good model fluctuates around 1400 rubles.

Model from polyvinyl chloride

A valve (reverse, sewer) made of polyvinyl chloride is often used in small residential buildings. Racks in many models are used with several holders. Float balls are installed in the primary chamber and are quite different in size. Some valves of the opposite type use two retainers. Outlet pipes are used mainly in large diameter. The wear of this type of valves is extremely low.

For a horizontal installation, they do not fit well. It is important to note that there are a lot of choke modifications on the market. For a large apartment house, they fit well. There is an air sewer valve made of polyvinyl chloride on average 900 rubles.

Modification from polypropylene

Valves made of polypropylene are sold only in a coupling type. Many models are manufactured with an extension cord. If you trust the reviews of experts, then for small houses, the devices are great. The central channels are quite different in size. Floating devices are most often installed in the primary chamber. On average, the model weighs no more than 2.2 kg. The wear on valves of this type is not very high. Modifications with two membranes are very rare. The maximum pressure limit on the plates, as a rule, does not exceed 4 bar. Many models are manufactured with a wide canal.

The outlet tube is located in the secondary chamber. The gauge of pressure on a branch pipe makes no more than 2 bar. For water systems with a large outlet, these valves are not bad. However, it should be noted that it is only possible to install them on sewer pipes in a horizontal position. The price for the model in our time fluctuates around 800 rubles.

EUROPLAST 100 Series

The valve (reverse, sewer) 110 is produced with a coupling device. If you trust the reviews of experts, then the model has a strong holder. The pressure limit is 4 bar. For sewage systems with a large output, the modification suits well. The float device is in the primary chamber and does not take up much space.

The clamping force of the device is not more than 8 N. The inlet pipe of the model is not designed for high pressure. The membrane at the reverse-type valve is located behind the plates. With big clogs, she does a good job. It is also important to note that the valve (reverse, sewer) is inexpensive, and in the market it can be purchased for 750 rubles.

Model of the EUROPLAST 200 series

The represented reverse-type valve is produced with two chambers. Extension in this case is completely made of cast iron. If you trust the reviews of experts, then for sewer systems at 2 bar, the modification is not bad. However, it is important to note that she has problems with the plates. The maximum pressure they can withstand at 3 Pa. The clamping force is a maximum of 3 N. The attachment for this valve is of the screw type.

The outlet pipe is used for large diameter, and for residential houses the model is not bad. The inlet pipe is provided by the manufacturer by 3.5 cm. The holder of this reverse type valve is used only one, and it is made entirely of stainless steel. Also worth noting is the fact that the model has a convex membrane. She copes with deposits in large quantities remarkably. The price for the specified valve of the reverse type fluctuates around 1100 rubles.