Knife gate valves, steel, cast iron
Gate valve in the pipeline.
Gate valve is a two-position pipeline valve that is needed to perform a shut-off and regulating function. The specific functionality depends on the type of equipment and the purpose of the system where they are installed.
Types and configurations of valves.
They are usually used to bring pipelines into working and non-working condition. As a regulator of the parameters of the working medium flow, they are rarely used. They are used everywhere in technological and transport pipelines with a diameter from 15 mm to 2 m. They are equipped with gas and water supply systems, oil pipelines, energy facilities.
The main difference between the valves, according to which their classification is carried out, is in the form of a locking part. This determines the scope of application of a particular type of gate valves. Wedge gate valve is the most popular type of valve. The valve with a rubberized wedge is sealed, but requires lapping of surfaces. The armature is also presented with a steel wedge. It has found application in pipelines in contact with aggressive media. Gate valve, another name is parallel. The gate is made in the form of a plate or disk that blocks the pipeline. It is able to withstand temperature and pressure changes. It is used for water treatment and chemical industry. Common to both types is that the shut-off element moves perpendicular to the axis of the flow of the moving medium.
The valve can be operated manually, and the valve can also be equipped with a pneumatic drive or an electric drive up to 110VAC, for example, a Gate valve 30c939r blue with electric actuator VD MT-50-110, 110VAC. Installation is carried out on horizontal and vertical pipelines. There are coupling, flange and welded gate valves.
Common models of gate valves.
The valves are mainly made of cast iron, because it is able to withstand constant exposure to a humid environment, high mechanical loads, has high reliability and a long service life.
The most common models of fittings include:
- The Gate valve 30c939r blue VD-040-16-GGG50-EPDM-F4-BLUE is a universal, high-strength, sealed cast-iron flanged gate valve. It is compatible with pipelines of various diameters, is operated in the areas of drainage, water supply, installed on heating mains.
- The DN500 cast iron gate valve with a reducer is a type of industrial valve that is used in the chemical, oil, gas and metallurgical industries. Thanks to the gear unit, a high speed of opening or closing the flow is ensured. Suitable for large diameter pipelines.
Pipeline valves. Operational advantages.
Wedge gate valves and slide gate valves have several important operational advantages that make their use multifunctional, reliable and practical:
- The valves have a simple design of the locking mechanism with a minimum number of parts, which facilitates their installation, repair and maintenance;
- Compact dimensions for installation in non-standard pipelines, for example, wells;
- The possibility of application in adverse operating conditions of a wide range of temperature modes and pressures;
- Compatible with highly viscous media, as well as media where fine particles are present;
- When the valve is open, a small hydraulic resistance is formed.
Valves are used in pipelines of various purposes, they can be repaired, thanks to replaceable valves. The durability of the reinforcement can be several decades.