Non-return pipeline valve

The pipeline check valve has proven itself well in preventing the reverse movement of the medium through the pipeline. This product makes it possible to reduce the internal pressure in the pipes, and also eliminates the pump stop. First of all, this type is used in public utilities, water and heat supply enterprises, as well as in various industries: chemical, petroleum, food, etc.

Scope of application

The valve can be seen in pipelines where it is necessary to move the working substance in a given direction. In addition, it is used in a closed circulating medium. It is also widely used in production lines where several pumps are used. In such systems, it is necessary to exclude the influence of pumping units on each other during their simultaneous operation. 

Also the return pipeline valve is used in filtration systems that they are mounted in technological lines working on reverse. It ensures the movement of the liquid passing through the filters in a given direction. 

Product advantages

The main advantages include: 

• high quality of manufacture;
• easy installation and disassembly;
• high strength;
• provides the necessary pressure level;
• long service life;
• tightness of the locking mechanism;
• extensive functionality;
• reliability in operation.

All these advantages have been achieved through the use of high-quality raw materials in the manufacture. Advanced technologies of casting and metal processing are also used in production. All manufactured units are tested for strength and tightness.

Product Description

This product is made of stainless steel and consists of the following structural elements: 

• cylindrical body;
• locking element with spring;
• two welded pipes are fixed with studs;
• sealing rings.

The principle of operation of the return pipeline valve

When the supply of water or other substance stops, the valve closes under the action of a spring. To ensure tightness in the closed position, it has an O-ring. Consequently, when liquid is supplied under the hydraulic valve, it moves into the stop hole. Thus, by compressing the spring and ensuring the passage of water or other substance. Therefore, in order for the pumped substance to change the direction of movement to the opposite, it must stop. And the shutter turns to its original position “closed”, and the pressure from the other side presses the valve. Thus, the occurrence of reverse fluid flow is prevented. As a result, the operation of the return valve is carried out under the influence of a passing substance and, therefore, becomes fully automatic.