Reliable steel ball valves for welding are suitable for long-term installation on industrial facilities, which provide for the distillation of liquid and gas mixtures. Regulating devices have unique operational properties and affordable cost. The Gremir company sells reliable mechanisms, pipelines and other related equipment to meet the needs of private users and companies. buy a ball steel crane welding is possible using a virtual catalogue.
Product Features The welded-type steel ball valve helps to ensure reliable protection from leakage of water and other liquids during different conditions operation of the system. The welded installation method is considered one of the most labor-intensive and durable. Another thing is that in this way you can install pipeline fittings on long period use with minimal technical impact. To ensure uninterrupted operation of the system, many specialized services select welded valves with a long service life for their needs. Such products are also covered by the manufacturer's official warranty. Average term The service life of such fittings is from 10 years. The final price for a steel ball valve for welding is set without taking into account additional extra charges. In addition, shut-off valves have high functional features. Two valve positions - “open” and “closed” provide convenient control under any external conditions. The standard configuration is manufactured with two-way manual control.
Many users have been able to evaluate the maintainability of drive cranes. Thus, a worn-out mechanism can be repaired after replacing the corresponding seals. Collapsible design crane simplifies the process of providing access to a breakdown. Many modifications have collapsible housings. Of course, such manipulations should be performed by a specialist with extensive experience.
Advantages of ball valves for welding
The steel ball valve for welding has the following advantages:
- the simplified structure of the mechanism will allow it to be used in many areas related to pipeline construction; - proven technologies and only the most reliable ones are used in the production of cranes consumables; - reasonable price on a steel ball valve for welding;
- wide scope of application and presence of all necessary modifications in the catalog;
- long period of operation, which is so important in the construction of modern pipelines;
- The locking function will help provide additional safety against flooding.
The Gremir company offers to purchase steel ball valves for welding online. Using the catalog, you can study the characteristics of products from the presented range. The store operator will provide personal advice or help with the choice of products presented. Pipeline fittings are shipped directly from warehouses, which eliminates additional time costs.
Perform a role shut-off valves on external pipelines (gas and oil pipelines, utility pipelines, pipelines in chemical explosive and fire hazardous industries, etc.). One of the varieties ball valve is a butt weld ball valve.
It is used as a shut-off device in order to completely block the flow of the circulating medium in the pipeline. Such a medium can be oil and its products, water, natural gas, air, alcohol products and other aggressive environments.
This type of tap is characterized by the fact that it is connected to the pipeline by welding. for welding does not have detachable parts (flanges, couplings, etc.), and this ensures maximum joint density and minimization of leaks at the joints.
Classification
Weld weld ball valves are classified according to the type of drive:
- manual;
- having an electric drive (manufactured to special order, taking into account the characteristics of the pipeline);
- manual with gearbox;
- available (manufactured to special order, taking into account the characteristics of the pipeline).
Typically, a manual welding ball valve is used for relatively small passages, with low or medium pressure in the pipeline. If the pressure in the pipeline is higher than average, and the pipes themselves are of large or medium diameter, then it is better to use an electric drive valve or a pneumatic drive valve.
Also, a ball valve for welding can be full bore or partial bore (classified by the type of passage).
Ball valve production and design
The components of the ball valve body are made by welding (so that the connection is strong and reliable). The free-floating ball is sealed with fluoroplastic seats.
Original technology is used in production. The principal feature of the devices is a non-separable steel body. During production, the locking mechanism is first assembled and then inserted into the housing. The pipes are carefully scalded.
The result is a non-demountable structure that does not need maintenance.
Steel butt weld has a unique internal structure. In case of wear, this design itself compensates for the process. This is facilitated by free-floating balls, which are located between springs that have a seal. If one part wears out, the spring expands and the structure is still connected tightly. This ensures tightness for a long time.
Operation and Maintenance
1. The ball valve for welding must be operated at a temperature of at least 30 o C.
2. The pressure in the pipeline can be 1.6/2.5/4 megapascal.
3. The circulating medium must also be at an appropriate temperature: range from -35 to +180 o C.
These devices do not require regular care or expensive maintenance. You can only add a seal on the rod yourself. The design development does not include renovation work or replacement of parts throughout the entire period of use.
Advantages and disadvantages of welded ball valves
Advantages:
- low specific gravity;
- low cost;
- the tap opens simply and quickly;
- when using a tap, stagnant zones do not form in the area where liquid flows;
- durable, reliable and simple design;
- hermetically sealed shutoff of liquid flow;
- given to the most responsible and hard to reach places pipeline;
- no maintenance required.
Flaws:
- repair is impossible;
- The tap can be installed and replaced only with welding work;
- the possibility of water hammer when the tap is opened suddenly;
- inconvenient to use due to the long valve shut-off lever (when working in cramped conditions).
Ball valves 11s67p 2TsP all-welded standard bore for welding are used as shut-off valves on pipelines in water and gas supply systems, at thermal power plants, in chemical, oil refining, gas and other industries.
Ball valves 11s67p 2TsP are all-welded universal and are designed to work with liquid and gaseous non-aggressive and non-toxic working media that are neutral to the materials of the valve parts. The crane is controlled manually by turning the handle 90° until it stops. On large diameters from DN-250, the shut-off valve of the ball valve is rotated by a mechanical gearbox. On request, the cranes can be supplied with a drive: pneumatic drive, electric drive, electro-hydraulic drive or pneumatic-hydraulic drive.
The working medium of all-welded ball valves 11s67p 2TsP is water, gas and oil products. The body and welding pipes are made of wear-resistant carbon steel 20. Ball valves 11s67p 2TsP are produced in the range of diameters DN 15-700 for pressures PN 25/40. Working environment temperature from minus 40°С to plus 200°С. The valves are available in full bore or standard bore (reduced) versions. The connection to the pipeline is welded - with welded fittings, which ensures a reliable, durable and leak-tight connection.
The estimated service life of all-welded ball valves "MARSHAL" is at the right conditions operation for at least 30 years.
