Individual entrepreneur details in the contract include mandatory and additional information....
All-welded ball flanged valves LD are manufactured by ChelyabinskSpetsGrazhdanStroy LLC. They are presented in the catalog in full range. Steel flanged standard bore and full bore LD valves are on sale. Flanged valves LD KSh.Ts.F. designed to shut off the working flow in steam and water pipelines operating under pressure up to 40 atm, with temperatures up to 200 degrees Celsius. Below detailed description production materials:
- Frame: steel (St.20, 12X18H10T, 09G2S)
- Ball: stainless steel
- DN 15-32: 20X13; DN 40-65: AISI 304; DN 80-700: AISI 409;
- Stock: stainless steel (12X18H10T, 20x13)
- stem seal: fluorosiloxane elastomer
- Rod seal/plain bearing: fluoroplast Ф4К20 (PTFE+C, Teflon)
- ball seal: fluoroplastic F4K20 (PTFE+C, Teflon) with a backup seal of fluorosiloxane elastomer
Steel flanged ball valves LD are manufactured in Russia and occupy a leading position in terms of price and quality. Full cycle production within one enterprise ensures maximum product quality.
Control options for flanged valves LD KShTsF
DN 15-250: handle - painted carbon steel with polymer tip
DN 300-700: mechanical gearbox included
The LD brand ball valve has two internal diameter standards: standard bore and full bore. The LD standard bore steel valve has an inner diameter of the hole in the ball one GOST size less than the diameter of the connected pipe. The dimensions of the diameter of the opening of the full bore valve coincide with the diameter of the pipe, which entails large dimensions, weight and price of the product.
The stem in the product can be considerably elongated, which is convenient if access directly to the tap is limited due to the peculiarities of the installation of the system. Also, the ball valve of steel grade LD can be ordered with a mechanical gearbox, which is relevant for valves of large diameters and high pressures.
materials
Cranes ball marks LD use a unified set of materials in their design. The body of the part is made of steel 20, cold-resistant 09g2s or stainless steel 12x18n10t. Rod and ball from of stainless steel 12x18n10t or 20x13. The stem is sealed with a fluorosiloxane elastomer, and the ball is sealed with it, plus for double protection with fluoroplastic. The ball valve under the LD brand is supplied with a handle with a polymer tip.
Varieties of fastening
The company's ball valves are available in three main forms of mount: flanged, socket and welded, with LD also offering combination mount and drain valves. The steel flanged ball valve LD is distinguished by high reliability and collapsibility of the connection. The installation of such a crane is advisable in rooms where there are restrictions on welding, on technological lines, implying periodic dismantling and prevention of the pipeline system. Flanged valves are presented up to diameter sizes of 600-700 mm.
A valve with a welded connection is relevant for the requirements of maximum tightness. This type is in demand on main pipelines, in systems with a large passage diameter, as well as in conditions where water hammer in the pipeline system is not excluded. Welded valves can be purchased with a diameter of 15 to 600 mm.
The coupling connection is presented for valves with a diameter of up to 80-100 mm, depending on the design for gaseous or liquid medium. This is due to the calculation for a lower pressure of the medium and reduced qualities of tightness. The advantage of these cranes is easy assembly with the pipeline, simple disassembly and reusability.
The flanged ball valve in the LD brand is also available with a combined mount, where there is a flange on one side and a welded connection on the other. This connection is very convenient when switching from the main pipeline to local system technological line.
The choice of a specific crane model must be carried out as carefully as possible, given that the cost of an accident with the wrong choice can be very high.
SUBMIT YOUR APPLICATION
SUBMIT YOUR APPLICATION
SUBMIT YOUR APPLICATION
On the Russian market exists big choice shut-off pipe fittings: gate valves various designs, valves, valves, butterfly valves, etc. However, in last years more and more consumers give their preference to ball valves.
Ball Valves LD have long term service (5-10 years). This undeniable reliability is ensured by the constant control of blanks for the manufacture of ball valves, as well as materials throughout the entire production process. Each LD steel ball valve is tested for seal tightness and body strength on special test benches. Valves are tested in accordance with GOST 9544-93, which sounds like “Pipeline shut-off valves. Valve tightness standards.
The places of installation and operation of LD ball valves can be pipeline systems of housing and communal services, water pipelines, pipelines for transporting oil, gas and oil products.
The LD steel ball valve has proven to be a reliable shut-off device with a high-quality seal of the stem-throat assembly, the seats in the ball valve are additionally spring-loaded, there are also duplicate seals on the seats, the material of which is coke-filled fluoroplastic made of fluorosiloxane elastomer.
Using ball steel cranes LD can reduce the cost of maintenance pipeline systems. This is achieved through the use of all-welded technology in the manufacture of ball valves. The result is that such a ball valve is durable and reliable. In the manufacture of LD ball valves, the method of crimping workpieces by cold stamping is used. For the production of KSh, the material is pipe elements of various metallurgical plants. As a result of all of the above, there are no various leakages of the working medium, and this happens if bolted connections are used in the device of other ball valves, maintenance and availability of spare parts and structural elements are not required, and various repair tools and training programs are not required.
Advantages of LD ball valves:
All-welded body
The all-welded body of the LD ball valve does not have any bolted sockets on the body, through which leakage is possible under dynamic loads of the pipeline. The ball valve uses not cast elements, as in most types of valves, but cold-formed blanks made from the pipe assortment of the largest domestic metallurgical plants.
Strength
The body of the LD ball valve consists of a central welded spherical part (body) and cylindrical end connections (pipes). The spherical forged design, which does not have bolts, allows, with a minimum wall thickness and minimum weight, to withstand the maximum working pressure and provide maximum resistance to loads.
Tests
Each LD ball valve passes the following acceptance tests
1. air tightness Рpr 6 kgf/cm² at t?+ 20?C
2. Strength and density of water:
* for Ru 1.6 MPa - Rpr 24 kgf / cm²
* for Ru 2.5 MPa - Rpr 38 kgf / cm²
* for Ru 4.0 MPa - Rpr 60 kgf / cm²
No need for maintenance
Since the LD ball valve has a long service life, a robust all-welded construction and no gland seals, it requires no maintenance or spare parts. Thus, there is no need for training programs, special tools and equipment for repairs, storage of spare parts.
High speed shutdown of the flow of the working medium
The LD ball valve is opened or closed by turning the handle through 90°, and more than ten full turns of the handwheel are required to open or close the valve.
Small (in comparison with gate valves) weight parameters of LD ball valves provide a minimum load on the pipeline.
Ease of controls
At high pressures and when the stuffing box is tightly tightened, opening and closing the valves is very difficult due to the small diameter of the flywheel, which leads to the use of additional improvised means. It takes several full turns of the flywheel to open or close. The ball valve is easily opened or closed by turning the stem 90°. At the same time, it is possible to visually determine whether the valve is open or closed.
Temperature resistance of ball valve
The temperature resistance of the ball valve is up to 180°C. A valve (valve) with a rubber seal allows only 70 °C, and a cone valve - no more than 80 °C.
Optimal price-quality ratio”
The price of the gate valve is slightly lower than the price of the LD ball valve, but the cost of installation and maintenance of the valve is much higher than that of the ball valve, which, combined with the high cost of repairing the valve, allows us to conclude that the use of the LD ball valve is more cost-effective.
Holding Santekhkomplekt is the official dealer of ChelyabinskSpetsGrazhdanStroy. The largest Ural manufacturer under the trademark LD manufactures steel ball valves. They are designed for transportation of oil and gas, installation of pipelines, used in heat and water supply systems. Each product of the Chelyabinsk company undergoes mandatory tests for compliance with GOST and TU. Constant control of production guarantees a very high quality of products and a positive reputation among consumers.
Cranes LD
ChelyabinskSpetsGrazhdanStroy produces high-quality LD cranes for various areas industry. The LD crane is used in gas and oil pipelines, in water and heat supply systems, as well as in production shops enterprises Food Industry. It is reliable and does not let the agent moving through the pipes, preventing leaks. In addition, the LD crane is easy to maintain and does not require regular maintenance.
Ball valves LD
LD ball valves are required for industrial and technological pipelines, as well as for utilities. Cranes of this brand are indispensable in the following working environments: gas, oil products, steam, compressed air, drinking and technical water, aqueous solutions, aggressive liquids, alcohol-containing substances. They are issued in various types: flanged, welded, socket, combined. LD ball valves are easy to operate and have a shelf life of up to 30 years.
Ball valves LD used in pipelines to convey the most various environments: water, gas, oil products, etc. The material for the manufacture of the body are structural steel grades, such as 09G2S, st.20, stainless steel 12X18H10T, etc. The LD ball valve has an actuator (ball) and a stem made of stainless steel 20X13, 40X13. These elements are sealed with elastomer, fluoroplast-4 plastic.
The connection of the LD ball valve to the network is carried out both by welding and in other ways: if it is flanged, then using flanges, if it is coupling, then using a thread. The tightness standard of the valve gate LD corresponds to class A in accordance with GOST 54808-2011. According to climatic version steel ball valves LD for welding can be made for use in temperate climate(category U), and cold (category HL) according to GOST 15150-69.
The products in question can be controlled by an ordinary handle, some kind of gearbox, as well as a pneumatic or electric drive. Ball valve LD flange must perform its functions at temperatures of -60 ... +200 ° C and -40 ... +200 ° C, depending on its version. Service life is set at least 3 years. Our company supplies steel ball valves LD to consumers in any quantity in a short time.
Depending on the version in which the crane is made, it can be used in different categories of climate, most often it is a temperate climate and a cold climate. The tightness of the gate design according to the standard, corresponding to class A, provides LD ball valves with high quality during many years of operation.
