Check valves.

A coupling check valve is a pipe fitting necessary to protect communications from leaks and consequences caused by changes in the characteristics of the water flow (for example, pressure or temperature).

The check valve for water does not allow the flow to move in the opposite direction, which eliminates the possibility of hydraulic shock. Its installation is relevant for water supply systems, autonomous heating systems, next to water measuring and plumbing devices.

A check valve for sewage provides an opportunity to cut off water and prevent its spillage into the ground. Faulty operation of the pump or its sudden shutdown can lead to an emergency situation. The presence of a reverse gear can protect against this.

Check valve device.

The design of the check valve includes elements such as a housing with a limiter, a cover, a seat, a gate, a rod and a flywheel.

The principle of operation of the check valve is a simple algorithm:

1. The working medium, when moving through the shutter, presses the spring, which is necessary to keep the product closed;
2. At high pressure, the spring is compressed, which opens the valve. This allows the environment to move in the right direction.

When the direction of the liquid changes or the pressure level drops, the spring closes the gate, which does not allow the water to move back.

Check valves. Kinds.

There are several types of check valves:

• The check ball valve is a convenient device with a removable cover, which makes it possible to perform maintenance without dismantling;
• Spring-loaded is suitable for pipes with a small diameter;
• Rotary. The locking element is a plate in the shape of a petal;
• The lifting check valve is used for large diameter pipes. It is optimal at high temperatures and pressure in the system;
• Single-leaf.

The types of check valves can be determined based on the type of materials from which they are made. Brass, stainless steel 304 and 316 grades, as well as cast iron are used for the production of check valves. These materials are characterized by high strength, durability, resistance to adverse operating conditions. Connection to the communication is possible by welding, using a coupling or flange, as well as by means of an inter-flange connection.

The check valve is metal. Dignities.

The advantages of check valves include the following operational advantages:

1. The installation of the check valve is characterized by the absence of complex manipulations. It is possible on horizontal and vertical sections of the pipeline;
2. Tightness of the valve;
3. Stable and trouble-free operation of the pipeline;
4. Silent operation;
5. Resistance to corrosion, high temperatures and pressure;
6. Insensitivity to contamination of the working environment.

The check valve is an element that ensures safety. With its help, you can reduce energy costs and have confidence in the reliable operation of the pipeline with timely maintenance of the device.