Siphon for washing machine with check valve: types, functions, installation

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Contents:
  • Versions and functions of the check valve
  • Which check valves do the experts recommend?
  • The principle of operation of the anti-siphon valve
  • Installation of the anti-siphon

In order to avoid risks in the operation of the washing machine, you must take into account all the details when installing it. As a protection against the effect of drawing water back into the tank, which often happens, a check valve is installed for the washing machine. In this article we will describe in detail the types of check valve( anti-siphon), the function and how to install it.

Versions and functions of the check valve

Dirty water can enter the tank if the washing machine is not properly connected to the sewer. This has negative consequences: the laundry is deteriorating, a large amount of electricity is consumed. Anti-siphon prevents waste water from entering the washing machine's tank, and thus protects the drain system from contamination.

The device provides unobstructed draining of water from the washing machine. Thanks to a special damper, water from the sewer system does not seep back into the tank. Having an idea about the types of valves and their manufacturers, you can choose a really high-quality drain with anti-siphon. Today in the markets you can find these types of check valves:

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  • mortise;
  • washing;
  • wall mounted;
  • non-separable;
  • segment;

All of them perform the function of ensuring the proper discharge of water and are virtually the same. However, when installing a washing machine of a certain brand( for example, LG), it may be necessary to use a segment valve that can be easily disassembled and cleaned from various debris. The device is a non-separable type suitable if there is not hard water in the water supply system. But even in this case, within 2-3 years, its replacement will be required.

Wall mounted valve is expensive. This option is used to install drainage communications in a narrow gap between the back of the washing machine and the wall. This compact anti-siphon has an aesthetic look.

When connecting a direct drain into the sewer pipe, the installation of a mortise device would be the best option. The check valve is inserted into a specially prepared insert. The washing anti-siphon is designed for installation in sinks of any kind in siphons.

Which check valves are recommended by experts?

  • Valve made of polypropylene wall type, production - the Czech Republic, the company «Alcaplast». A quality device, affordable, suitable for any drain hoses. It is used as an end fixation with a sewage pipe, provides reliable discharge of waste water from a washing machine. Chrome-plated anti-siphon with a spring mechanism and a reflector, decorating the place of attachment. Approximate cost - 8 dollars.
  • Check valve made of polypropylene mortise type, production - Italy, the company «Siroflex».The mechanism is installed in the hole in the sewer pipe or serves as a mount for the drain hose. The device is represented by a spring of stainless steel and a membrane of rubber. Provides effective protection for the drain system. Approximate cost - $ 7.
  • Segment polypropylene anti-siphon, manufactured in Italy, by Merloni. This check valve is mounted under the sink. It is easily disassembled and cleaned in case of pollution. The mechanism is a spring with a membrane of rubber. Provides normal discharge of water flow from the tank. Approximate cost - 8.5 dollars.

The principle of operation of the anti-siphon valve

A check valve is a common mechanism and it works according to a simple scheme. Of a certain shape, a tube with a spring or ball type valve is installed on the sewer pipe, siphon or drain hose. During discharge, water under pressure penetrates into the anti-siphon and flows through it into the sewer pipe. In case of a reverse pressure, the water does not leak, as the mechanism does not open inside.

When using a spring-loaded valve, the drainage system is protected against leakage of dirty water by a spring and a rubber membrane that creates a damper. In a ball check valve, a rubber ball serves as a gate. It is pressed against the membrane under the influence of pressure. Using the built-in edges, the ball is cleaned.

Installation of anti-siphon

Check valve can be installed by hand. But it is necessary to take into account all its design features. Despite the distinctive details, in any case, the work is done on the same principle.

Anti-siphon consists of a tube with two outlets( from opposite ends) of different diameters. On the one hand, the valve tube must be connected to the siphon or inserted into the cut-out in the sewer pipe, and on the other hand, connected to the drain hose of the washing machine. Then you need to do it yourself with a high-quality seal using all the joints with a sealant, after which the work can be considered finished.

For normal operation of the washing machine, antisiphon is not always required. Experts say that the installation of this mechanism is relevant in the case of:

  1. direct connection of the washing machine to the drain pipe, which is embedded very low and there is no way to lift it;
  2. connect the drain hose to the siphon, which is located under the sink.

Anti-siphon device is not necessary if the connection of the washing machine is made in accordance with all the rules and the drain pipe is raised to the required height.

However, from the washing machine it smells like an unpleasant smell, and at the same time the washed things remain dirty after washing;In this situation, there is no alternative solution to the problem!

Summing up, it should be noted that the organization of the discharge of waste water from the washing machine tank must be carried out in accordance with all the rules. If a “siphon effect” occurs, an anti-siphon mechanism is required. Despite the simplest design, the device is indispensable when seeping dirty water back into the unit. Some washing machines are sold with check valves. But also the device can be bought separately.

It is very important to choose the type of anti-siphon that will correspond to the drainage device. In addition, you should seriously approach the installation work - it is necessary to reliably seal all parts so that there are no leaks.

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