Gate Valve for Ductile Iron Pipe with Good Quality

Gate Valve for Ductile Iron Pipe with Good Quality

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 1000 set

Supply Capability:: 10000 set/month

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1. Structure of Gate Valve Description：

1. Selected materials, in line with domestic and international standards, high overall quality of the material.
2. In line with the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance, attractive appearance.
3. Sealing pair advanced and reasonable, gate and seat sealing surface with different hardness Stellite (Stellite) cobalt-based alloy cladding made, reliable sealing, high hardness, wear resistance, high temperature, corrosion good anti-abrasion performance, long life.
4. Stem quenched and nitride surface treatment, has good corrosion resistance, scratch resistance and abrasion resistance.

2. Main Features of the Gate Valve:
Working medium: water, non-corrosive liquid, saturated vapor (≤ 0.6MPa)
Operating temperature: -20 °C ≤ t ≤ 135 °C
Stem: non-rising stem
Body material:Brass/Stainless Steel
Connection:flanged

3. Images of the Gate Valve:

Gate Valve for Ductile Iron Pipe with Good Quality

4. Specification of the Gate Valve:

1.Material:A105,A105N,F304,F304L,F316,F316L,LF2,F5,F11,F22,F347,F321,F51,Monel......

2.Size:≤3"

3.Pressure: Class150~2500

4.Design and Manufacture:API602,BS5352,ANSI B16.34

5.Test and Inspection:API598,GB/T13927,JB/T9092

6.Structure Features:

B.B(Bolted Bonnet) and OS&Y(Outside Screw and Yoke)

W.B(Welded Bonnet) and OS&Y(Outside Screw and Yoke)

5.FAQ

1. Can I get free samples?

A: Yes,we can provide you the free sample, but you need to bear their own delivery costs.

2. Can I request to change the form of packaging and transportation?

A:Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

3. Can I request to advance the shipment?

A: It should be depends on whether there is sufficient inventory in our warehouse.

4. Can I have my own Logo on the product?

A: Yes, you can send us your drawing and we can make your logo, but you have to bear

their own the cost.

5. Can you produce the products according to my own drawings?

A:Yes,we can produce the products according to your drawings that will be most satisfy you.

Q: What's the difference between cast iron pipe and steel pipe?: Cast iron pipes (Cast, Iron, Pipe), cast cast pipe. Cast iron pipes are used for water supply, drainage and gas transmission lines. They include cast iron pipes and pipe fittings. Labor intensity is small. According to the casting method, it is divided into continuous cast iron pipe and centrifugal cast iron pipe, in which the centrifugal cast iron pipe is divided into sand mould and metal type two kinds. Divided into gray cast iron pipe and nodular cast iron pipe according to different material. According to the interface form, it is divided into flexible interface, flange interface, self anchored interface, rigid interface and so on. Among them, the flexible iron pipes rubber sealing ring; flange interface cast iron pipe flange fixed in the rubber pad, the flange gasket sealing; rigid interface cast iron pipe socket is large, straight pipe is inserted, sealed with cement, this technology has been basically eliminated

Q: How do ductile iron pipes handle thermal expansion and contraction?: Ductile iron pipes are known for their excellent ability to handle thermal expansion and contraction. This is mainly due to their unique composition and design which allows them to withstand changes in temperature without experiencing significant damage or deformation. Thermal expansion occurs when a material expands due to an increase in temperature, while thermal contraction refers to the contraction that occurs when a material cools down. Ductile iron pipes can effectively accommodate these changes in temperature by utilizing their inherent flexibility and strength. One of the key factors that enable ductile iron pipes to handle thermal expansion and contraction is their high ductility, which refers to their ability to deform without breaking. This ductility allows the pipes to absorb the expansion and contraction forces without cracking or rupturing. Moreover, the composition of ductile iron pipes includes graphite nodules, which act as microcracks that can absorb stress and prevent the material from fracturing. This unique microstructure enhances the pipes' resistance to thermal expansion and contraction. In addition, ductile iron pipes are often designed with joints that allow for limited movement. These joints, such as mechanical joints or push-on joints, can accommodate the expansion and contraction of the pipes by providing a certain degree of flexibility. This helps to prevent the pipes from becoming overstressed or damaged. Overall, ductile iron pipes are specifically engineered to handle thermal expansion and contraction effectively. Their high ductility, unique microstructure, and joint design make them a durable and reliable choice for applications where temperature variations are expected.

Q: Can ductile iron pipes be used in areas with high levels of hydrogen sulfide gas and corrosion potential?: Ductile iron pipes can be used in areas with high levels of hydrogen sulfide gas and corrosion potential, but it is important to consider certain factors before making a decision. Ductile iron pipes have a high resistance to corrosion, especially when they are properly protected with external coatings and linings. This makes them suitable for environments with moderate levels of hydrogen sulfide gas and corrosion potential. However, in areas with extremely high levels of hydrogen sulfide gas and severe corrosion potential, other materials like corrosion-resistant alloys or specially coated pipes may be more appropriate. It is crucial to conduct a thorough evaluation of the specific conditions in the area to determine the suitability of ductile iron pipes. Factors such as the concentration of hydrogen sulfide gas, the presence of other corrosive elements or chemicals, and the overall corrosiveness of the environment should be considered. Additionally, the local regulations and industry standards must be consulted to ensure compliance and safety. In conclusion, while ductile iron pipes can withstand moderate levels of hydrogen sulfide gas and corrosion potential, a comprehensive assessment of the specific conditions is necessary to determine their suitability. Consulting with experts in the field and considering alternative materials may be required in areas with high levels of hydrogen sulfide gas and severe corrosion potential.

Q: Are ductile iron pipes suitable for use in desalination plants?: Yes, ductile iron pipes are suitable for use in desalination plants. Ductile iron is known for its high strength and durability, making it capable of withstanding the harsh conditions and corrosive nature of desalination processes. Additionally, ductile iron pipes have excellent resistance to internal and external corrosion, making them a reliable choice for transporting the high-pressure brine and freshwater in desalination plants.

Q: What is the difference between ductile iron pipes and cast iron pipes?: Ductile iron pipes and cast iron pipes differ in terms of their composition and physical properties. Ductile iron pipes are made from ductile iron, which is a type of cast iron that contains nodular graphite in its microstructure, making it more flexible and resistant to cracking. On the other hand, cast iron pipes are made from gray cast iron, which has a gray, brittle structure due to the presence of graphite flakes. Ductile iron pipes are stronger, more durable, and less prone to damage, making them suitable for high-pressure applications and areas with heavy traffic loads. Cast iron pipes, although more brittle, are known for their corrosion resistance and are commonly used for water and sewage systems.

Q: What are the different types of joints used with ductile iron pipe?: There are several different types of joints that can be used with ductile iron pipe. These joints are designed to provide a secure and watertight connection between sections of pipe. Some of the most common types of joints used with ductile iron pipe include: 1. Mechanical Joint: This is the most commonly used joint for ductile iron pipe. It consists of a gland and a follower which are tightened using bolts and nuts to provide a tight seal. Mechanical joints are flexible and can accommodate slight misalignments. 2. Push-On Joint: This type of joint does not require any bolts or nuts. It is designed to be easily assembled by simply pushing the pipe sections together. A rubber gasket is used to provide a watertight seal. 3. Restrained Joint: Restrained joints are specifically designed for applications where pipe movement needs to be limited. These joints typically include a mechanical joint with additional features such as thrust collars or tie rods to prevent axial movement. 4. Flanged Joint: Flanged joints are commonly used for larger diameter pipes. The pipe ends are flanged and then bolted together, with a gasket placed in between to create a leak-proof connection. Flanged joints are typically used in applications where frequent disassembly and reassembly may be required. 5. Welded Joint: In some cases, ductile iron pipe sections may be welded together using a fusion welding process. This creates a permanent and strong joint. Welded joints are commonly used in high-pressure applications where a reliable and durable connection is required. It is important to note that the choice of joint type will depend on the specific requirements of the project, such as the pipe diameter, pressure rating, and the nature of the fluid being transported. Additionally, local regulations and standards may also dictate the type of joint that should be used in certain applications.

Q: What is the K9 standard pressure for ductile iron pipes?: The annealed ductile iron pipe is composed of ferrite and pearlite. The mechanical properties of the ductile iron pipe are better. Ductile iron pipes mainly called centrifugal ductile iron pipe, it has the properties of nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc.. Water supply pipe is the first choice, with high cost performance. Compared with the PE pipe, from the installation time, ductile pipe PE pipe installation is simple and rapid, and after the installation of internal and external pressure bearing better tightness and corrosion resistance; from the point of view, ductile pipe sealing better after installation, but also can improve the corrosion resistance of corrosion protection through a variety of means; from the hydraulic performance, because ductile pipe specifications generally refers to the inner diameter of PE pipe diameter specifications generally refers to the same specifications, because under the condition of ductile pipe can achieve greater runoff; from the installation and maintenance cost, ductile pipe have more favorable price. The main components of ductile iron pipes are carbon, silicon, manganese, sulfur, phosphorus and magnesium. The inner wall of zinc spray, anti-corrosion materials such as cement mortar.

Q: Are ductile iron pipes suitable for installation in areas with high soil settlement and consolidation?: Ductile iron pipes are generally considered suitable for installation in areas with high soil settlement and consolidation. One of the key advantages of ductile iron pipes is their ability to withstand external loads and accommodate ground movement. Ductile iron pipes are known for their high strength and flexibility, making them more resistant to soil settlement and consolidation compared to other pipe materials. They have a higher tensile strength and can withstand heavy loads and ground vibrations without cracking or breaking. This makes them suitable for areas where the soil is prone to settlement and consolidation. Furthermore, ductile iron pipes have a high resistance to corrosion and can withstand aggressive soil conditions, which is often associated with areas prone to settlement and consolidation. They are also less susceptible to damage from external factors such as roots or rocks, which further enhances their suitability for installation in such areas. It is important, however, to consider the specific conditions of the site and consult with engineers or experts familiar with the local soil conditions. Factors such as the magnitude and rate of settlement, soil type, groundwater levels, and construction methods should be taken into account when determining the appropriateness of ductile iron pipes for installation in areas with high soil settlement and consolidation. In conclusion, ductile iron pipes are generally suitable for installation in areas with high soil settlement and consolidation. Their high strength, flexibility, resistance to corrosion, and ability to withstand external loads make them a reliable choice for such conditions. Nonetheless, it is always recommended to assess the specific site conditions and consult with professionals to ensure the most appropriate pipe material is chosen for each project.

Q: What are the different types of linings available for ductile iron pipe?: There are several different types of linings available for ductile iron pipe, each with its own advantages and applications. 1. Cement mortar lining: This is one of the most common linings used for ductile iron pipes. It consists of a layer of cement mortar applied to the interior surface of the pipe. Cement mortar lining provides excellent resistance to corrosion and chemical attack, making it suitable for a wide range of applications, including potable water distribution, wastewater conveyance, and industrial pipelines. It also helps to reduce friction and turbulence within the pipe, improving flow efficiency. 2. Polyethylene lining: Polyethylene linings are often used in ductile iron pipes for applications where corrosion resistance is a primary concern. This lining consists of a layer of high-density polyethylene (HDPE) that is either extruded or sprayed onto the pipe's inner surface. Polyethylene lining provides superior resistance to corrosion, abrasion, and chemical attack, making it ideal for transporting aggressive fluids, such as saltwater, chemicals, or industrial waste. 3. Polyurethane lining: Polyurethane linings are commonly used in ductile iron pipes for applications where enhanced protection against abrasive wear is required. This lining is formed by spraying or pouring a layer of polyurethane onto the inner surface of the pipe. Polyurethane lining offers excellent resistance to abrasion, impact, and chemical attack, making it suitable for conveying abrasive slurries, mining applications, and other high-wear environments. 4. Epoxy lining: Epoxy linings are applied to ductile iron pipes to provide a protective barrier against corrosion and chemical attack. This lining is typically formed by applying a layer of epoxy resin to the pipe's inner surface through a process known as centrifugal casting or electrostatic spraying. Epoxy lining offers excellent adhesion and resistance to corrosion, making it suitable for various applications, including potable water distribution, wastewater treatment, and industrial pipelines. 5. Zinc lining: Zinc linings are used in ductile iron pipes to provide cathodic protection against corrosion. This lining involves applying a layer of zinc to the pipe's inner surface, either through hot-dip galvanizing or by electroplating. Zinc lining acts as a sacrificial anode, corroding preferentially to the iron pipe and protecting it from corrosion. It is commonly used in applications where the pipe is exposed to highly corrosive environments, such as seawater or acidic soils. Overall, the choice of lining for ductile iron pipes depends on the specific requirements of the application, including the type of fluid being transported, the level of corrosion resistance needed, and the potential for abrasive wear. Consulting with industry experts and considering factors such as cost, longevity, and maintenance requirements can help determine the most suitable lining option for a particular project.

Q: Is the water cast iron pipe 100% for hydrostatic test?: Domestic manufacturers, such as steel group wing ductile iron pipe limited liability company, Xinxing Ductile iron pipes, Saint Gobain pipe is 100% factory test pressure, test pressure in 3.2-5.0MPa according to different specifications.

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