Reverse valves are often used in sewer systems. They differ in parameters, as well as design features. Some devices are suitable for small country houses. Their throughput is low. The standard check type valve includes two chambers, a holder, a diaphragm, and a float mechanism.
The 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. A good sewer check valve costs (market price) about 800 rubles
How models work
The principle of operation of reverse type valves is based on a change in pressure inside the sewer system due to plates. In the first chamber, water retention and filtration occurs. In this case, the masses from the first chamber are not able to return to the nozzle. The float mechanism of the device is a stabilizer. With a large volume of wastewater, the membrane is activated. holder indevice is needed to fix it. Waste water exits through the pipe, which is located behind the plates.
Installing the device
Clamping rings are often used to install check valves on sewer pipes. Screws are used in various diameters. If we consider pipes at 5.5 cm, then two rings will be needed. First of all, the inlet pipe of the primary chamber is fixed. Then inspect the float level. All valves are tested before use. Lastly, the outlet pipe is installed. If leaks are detected, the clamping rings are changed.
Coupling modifications
When the internal water supply and sewerage of buildings are clogged, coupling devices are used. Quite often they are used in apartment buildings. Cases for models are made only for two cameras. Float mechanisms are used as standard ball type. For sewer systems for 2 bars, the devices are great.
Many models use two steel holders. Outlet nozzles are installed in different sizes. Clamping rings with screw connection are used for the installation of non-return valves. The tubes are quite often connected to the primary chamber. The pressure limit of the device depends on the dimensions of the plates.
Single holder models stand out for low throughput. Their membranes are quite often clogged. For 3 bar sewer systems, devices are poorly suited. It is also worth noting that the coupling type models must not be installed in a vertical position. There is a good modification on the market for about 860 rubles.
Flanged devices
When the internal plumbing and sewerage of buildings is clogged, a flanged check type valve is used, which is suitable for pipes of different diameters. The throughput of the models is quite high. Fittings are used both steel and aluminum type. Models with longitudinal holders are quite rare. Many models are great for 3 bar sewer systems. Holders for modifications are used with and without clamps. Enclosures are produced as standard with two chambers.
Models with convex membranes are common. Their wastewater throughput is at around 5 microns. Directly float modifications are installed in the primary chamber. Balls are used air type. For many models, the holders are used with a short column and are fixed. Devices for sewer systems for 2 bars cost about 1200 rubles on the market
Steel models
Drain blockages are often cleared thanks to steel valves, which are highly durable. Holders for models are produced with different racks. Models vary greatly in size. Many devices are equipped with two clutch mechanisms. The float balls are mainly located in the primary chamber. Modifications are great for sewer systems for 2 bars.
No fittings with holders are installed in allmodels. Many of them are made with screw fastening. The clamping force of the devices fluctuates around 5.5 N. The outlet pipes are installed on one or more rings. For 3 bar sewer systems, only devices with large protrusions are suitable. The throughput indicator must be at least 4 microns. The rigidity of the pipes depends on the manufacturer. A standard steel valve on the market costs about 700 rubles.
Cast iron appliances
Cast iron valve (check valve, sewer) is quite common nowadays. Many models are produced with a clutch device. For horizontal installation on the sewer riser, they are great. Holders are mainly used with screw connectors. Primary chambers are used in different sizes. Many models are made with short pole holders.
Membranes are used with and without retainers. Devices are installed quite often on sewer systems of 3 bar. They are easy to maintain. However, it is important to note that they have low downforce. The price of a good air sewer valve fluctuates around 900 rubles
Brass models
In apartment buildings, sewer blockages can be removed using brass check valves. The clamping force of the devices is on average 7 N. Many models use two fittings. Modifications with extension cords are quite rare. Primary valves are always manufactured with a float. The limiting pressure indicator largely depends on the manufacturer. Coupling modifications are very rare. Not all models are suitable for horizontal installation. Fittings are available with or without posts.
Holders for many models are of a fixed type. To install check valves on a sewer riser, several clamping rings are used. There are many models with adapters on the market. On average, the diameter of the outlet pipe is 6 cm. Retainers are quite often used in the secondary chamber. There is a good valve (check valve, sewer) in the region of 1200 rubles
Bronze Models
The bronze sewer valve in the store costs quite a lot. However, it is important to note that it is characterized by increased resistance to corrosion. Many models have fitting mechanisms. Modifications with double couplings are also not uncommon. The average outlet pipe diameter is 5.4 cm.
Modifications are mounted only on screw clamps. Holders are quite often installed in the secondary chamber. Racks under them are used quite wide. The clamping force of the devices fluctuates around 5 N. For country houses, models of this type are purchased very rarely. Modifications with two floats are rare. The price of a good model fluctuates around 1400 rubles.
PVC model
Valve (non-return, sewer) made of polyvinyl chloride is quite often used in small residential buildings. Racks in many models are used with multiple holders. Float balls are installed in the primary chamber and are quite large in size.are different. Some non-return valves use two retainers. Outlet pipes are used mainly with large diameters. Wear on this type of valve is extremely low.
For horizontal installation, they are not the best fit. Separately, it is important to note that there are many fitting modifications on the market. For a large residential building, they fit well. An air sewer valve made of polyvinyl chloride costs an average of 900 rubles
Polypropylene modification
Polypropylene valves are only sold with coupling type. Many models are made with an extension cord. If you trust the reviews of experts, then the devices are great for small houses. The central channels are quite different in size. Float devices are most often installed in the primary chamber. On average, the model weighs no more than 2.2 kg. Wear on valves of this type is not very high. Modifications with two membranes are very rare. The limiting pressure on the plates, as a rule, does not exceed 4 bar. Many models are made with a wide channel.
The outlet pipe is located in the secondary chamber. The pressure indicator on the nozzle is not more than 2 bar. For plumbing systems with a large output, these valves are well suited. However, it should be noted that they can only be installed on sewer pipes in a horizontal position. The price of the model in our time fluctuates around 800 rubles.
EUROPLAST 100 series devices
The valve (check, sewer) 110 is made with a coupling device. If you trust the reviews of experts, then the model has a solid holder. The limiting pressure indicator is at the level of 4 bar. For sewer systems with a large output, the modification fits well. The float device is located 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 check type valve is located behind the plates. She handles big problems well. It is also important to note that the valve (non-return, sewer) is inexpensive, and it can be purchased on the market for 750 rubles.
Model EUROPLAST 200 series
The presented check type valve is produced with two chambers. The extension in this case is completely made of cast iron. If you trust the reviews of experts, then for 2 bar sewer systems, the modification is not bad. However, it is important to note that she has problems with the plates. They withstand the maximum pressure at around 3 Pa. The clamping force is a maximum of 3 N. The fastening of this valve is of the screw type.
The outlet pipe is large in diameter, and the model is good for residential buildings. The inlet pipe is provided by the manufacturer at 3.5 cm. The holder for this check type valve is used only one, and it is made entirely of stainless steel. Also worthnote the fact that the model has a convex membrane. With deposits in large quantities, she copes remarkably. The price for the specified check valve fluctuates around 1100 rubles.
