A wafer check valve is a type of device that is connected to a pipeline by means of a wafer or flange connection. The conditional diameter pass for it can vary between 15-400 millimeters.
The check valve can be rotary or lifting. Rotary can be unstressed or simple, and lifting can be horizontal or vertical (depending on the type of pipeline for which it is used). In addition, there are single-seat and multi-seat valves.
The wafer check valve is designed to prevent reverse flows of the internal medium in the pipe, as well as water hammer. It is not a shut-off valve. According to the constructive device, it can be rotary, lifting, ball or spring. Wafer type check valve adoptedcharacterized by the peculiarity of the penetration of the working medium in only one direction, and a flange connection is used for its fastening. The flange is the connecting part of the pipeline, which is a frame or disk equipped with holes for bolts. The flange is used to join pipelines with fittings, in addition, it can be part of a gate, fitting or pipe. The wafer check valve is intended for mounting on pipelines located horizontally, which prevents the formation of reverse flows in the internal environment. The fittings of this type are regulatory mechanisms. This type may well become a replacement for dissimilar gate valves, ball valves, and shut-off valves.
The wafer check valve is designed for installation on technical pipelines, where it automatically protects and blocks the occurrence of reverse flow. It is advisable to use it for a variety of liquids, steam and gas. By design, such valves provide the proper level of tightness, excluding the occurrence of hydraulic shocks. Installation of this type of valve is possible in a vertical or horizontal position. During installation, it is clamped between two flanges. The medium flow is directed to the valve disk marked with an arrow.
Professional wafer check valve is applicable for guaranteed reliable sealing of pipelines from the formation of unwanted flow in the opposite direction, which is usuallyis formed from the environment used for various reasons. The thermal shut-off valve can be used in a variety of heating systems, as well as in modern chemical, household, food and other industries. Such a valve is able to work in different working environments: chemical mixtures, air, water in hot or cold supply systems, sea water, drinking water, mineral oils, petroleum products and gas, as well as in other types of media.
This type of valves can be made from a fairly wide range of materials, among which the most popular are usually distinguished: cast iron, brass, steel, copper. This allows it to be used as a connecting part of pipelines at different pressures and temperatures, while its functioning remains at a fairly reliable level, regardless of the working environment.
