China wholesaler Made in China Grooved Fittings Painted Rigid Coupling for Water/Fire/Sewage System

Product Description

Our main productions are malleable iron pipe fittings, the brand is “G”. Others include grooved fittings and couplings, buttweld fittings, steel pipe nipples and couplings, flanges and stainless steel thread fittings. The products are widely used in fire protection, plumbing, irrigation, oil, gas, infrastructure, construction, and decoration, etc.

product picture

proove pipe fitting coupling() tee cross elbow
Form Equal Equal/Reducing Equal/Reducing Equal/Reducing
Model  1″~12″  1″~12″  1″~12″  1″~12″
Origin ZheJiang China ZheJiang China ZheJiang China ZheJiang China
Type  Coupling Tee Cross Elbow
Technology Casting Casting Casting Casting
Texture  Ductile Iron  Ductile Iron  Ductile Iron  Ductile Iron
product name  FM/UL Approved Ductile Irion Rigid Coupling  FM/UL Approved Ductile Irion Tee  FM/UL Approved Ductile Irion Cross  FM/UL Approved Ductile Irion Elbow
Certificate ISO9001/FM/UL ISO9001/FM/UL ISO9001/FM/UL ISO9001,FM,UL
Surface Treatment Epoxy/Painted/Galvanized etc Epoxy/Painted/Galvanized etc Epoxy/Painted/Galvanized etc Epoxy,Painted,Galvanized etc
Useage Fire Fighting,Water Supply Fire Fighting,Water Supply Fire Fighting,Water Supply Fire Fighting,Water Supply
Color Red/Orange/Blue/White/Grey etc. Red/Orange/Blue/White/Grey etc. Red/Orange/Blue/White/Grey etc. Red,Orange,Blue,White,Grey etc.
Working Pressure 300psi/2.07mpa 300psi/2.07mpa 300psi/2.07mpa 300psi/2.07mpa
Packing Carton Carton Carton Carton
Delivey Time 30Days 30Days 30Days 30Days

Packaging & Shipping

Certifications

 

Company Profile

HangZhou Jizhong Malleable Iron Co., Ltd was established in 1990, with more than 20 years of production and sales experience. Our factory covers an area of 15,000 square CHINAMFG with 150 employees, of whom 10 are quality control personnel, with perfect testing equipment. The company has passed the ISO9001:2015 management system certification and BV certification. And our products have passed the UL&FM fire safety certification which are safe and reliable.

FAQ

1.Are you a manufacturer?
Yes, our factory was set up in 1990

2.How to confirm the goods quality before placing orders?
We have a perfect quality inspection system to ensure the quality of products.

3.Acceptable payment methods?
We can accept T/T, L/C, O/A, etc

4.How long will it take to deliver?

Generally 30-50 days deliver

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rigid coupling

What Are the Maintenance Requirements for Rigid Couplings?

Rigid couplings are known for their simplicity and low maintenance requirements. Since they do not have moving parts or flexible elements, there are minimal wear and tear issues. However, some maintenance considerations for rigid couplings include:

1. Regular Inspection: It is essential to perform periodic inspections of the rigid couplings to check for any signs of wear, damage, or misalignment. Regular inspections can help identify potential issues early and prevent further problems.

2. Shaft Alignment: Proper shaft alignment is critical for rigid couplings. During installation or whenever maintenance work is performed on the connected machinery, the shaft alignment must be checked and adjusted if necessary. Misalignment can lead to premature coupling failure and cause additional stress on connected equipment.

3. Lubrication: Most rigid couplings do not require lubrication since they have no moving parts. However, some special designs or large-sized couplings may have set screws or other fasteners that require lubrication. It is essential to follow the manufacturer’s guidelines regarding lubrication, if applicable.

4. Corrosion Protection: In corrosive environments, protecting the rigid couplings from corrosion is crucial. This can be achieved through the use of corrosion-resistant materials or coatings.

5. Periodic Re-tightening: If the rigid coupling uses set screws or other fasteners, periodic re-tightening may be necessary to maintain the integrity of the connection. This is particularly important in applications with high vibrations or heavy loads.

6. Temperature Considerations: Rigid couplings may experience thermal expansion or contraction, especially in high-temperature environments. It is essential to consider the thermal expansion characteristics of the coupling material and the connected shafts to ensure proper functioning under varying temperatures.

7. Professional Maintenance: In complex systems or critical applications, it is advisable to seek professional maintenance and alignment services. Expert technicians can ensure proper installation, alignment, and maintenance of rigid couplings, reducing the risk of unexpected failures.

Overall, rigid couplings are designed for reliability and longevity, and proper maintenance practices can further enhance their performance and lifespan. Regular inspections and alignment checks are vital for identifying and addressing potential issues before they escalate into costly problems.

rigid coupling

Can Rigid Couplings Be Used in Applications with Varying Operating Temperatures?

Rigid couplings are versatile mechanical components that can be used in a wide range of applications, including those with varying operating temperatures. However, the selection of the appropriate material for the rigid coupling is crucial to ensure its reliable performance under different temperature conditions.

Material Selection: The choice of material for the rigid coupling depends on the specific operating temperature range of the application. Common materials used in manufacturing rigid couplings include steel, stainless steel, and aluminum, among others. Each material has its own temperature limitations:

Steel: Rigid couplings made from steel are suitable for applications with moderate to high temperatures. Steel couplings can handle temperatures ranging from -40°C to around 300°C, depending on the specific grade of steel used.

Stainless Steel: Stainless steel rigid couplings offer higher corrosion resistance and can be used in applications with more demanding temperature environments. They can withstand temperatures from -80°C to approximately 400°C.

Aluminum: Aluminum rigid couplings are commonly used in applications with lower temperature requirements, typically ranging from -50°C to around 120°C.

Thermal Expansion: When selecting a rigid coupling for an application with varying temperatures, it is essential to consider thermal expansion. Different materials have different coefficients of thermal expansion, meaning they expand and contract at different rates as the temperature changes. If the operating temperature fluctuates significantly, the thermal expansion of the rigid coupling and the connected components must be carefully accounted for to avoid issues with misalignment or binding.

Extreme Temperature Environments: For applications with extremely high or low temperatures beyond the capabilities of traditional materials, specialized high-temperature alloys or composites may be required. These materials can withstand more extreme temperature conditions but may come with higher costs.

Lubrication: The choice of lubrication can also play a role in the suitability of rigid couplings for varying temperature applications. In high-temperature environments, consideration should be given to using high-temperature lubricants that can maintain their effectiveness and viscosity at elevated temperatures.

In conclusion, rigid couplings can indeed be used in applications with varying operating temperatures, but careful material selection, consideration of thermal expansion, and appropriate lubrication are essential to ensure reliable and efficient performance under changing temperature conditions.

rigid coupling

Limitations and Disadvantages of Using Rigid Couplings:

Rigid couplings offer several advantages in providing a strong and direct connection between shafts, but they also have certain limitations and disadvantages that should be considered in certain applications:

  • No Misalignment Compensation: Rigid couplings are designed to provide a fixed connection with no allowance for misalignment between shafts. As a result, any misalignment, even if slight, can lead to increased stress on connected components and cause premature wear or failure.
  • Transmit Shock and Vibration: Rigid couplings do not have any damping or vibration-absorbing properties, which means they can transmit shock and vibration directly from one shaft to another. In high-speed or heavy-duty applications, this can lead to increased wear on bearings and other components.
  • No Torque Compensation: Unlike flexible couplings, rigid couplings cannot compensate for torque fluctuations or angular displacement between shafts. This lack of flexibility may not be suitable for systems with varying loads or torque requirements.
  • Higher Stress Concentration: Rigid couplings can create higher stress concentration at the points of connection due to their inflexibility. This can be a concern in applications with high torque or when using materials with lower fatigue strength.
  • More Challenging Installation: Rigid couplings require precise alignment during installation, which can be more challenging and time-consuming compared to flexible couplings that can tolerate some misalignment.
  • Increased Wear: The absence of misalignment compensation and vibration absorption can lead to increased wear on connected components, such as bearings, shafts, and seals.
  • Not Suitable for High Misalignment: While some rigid couplings have limited ability to accommodate minor misalignment, they are not suitable for applications with significant misalignment, which could lead to premature failure.

Despite these limitations, rigid couplings are still widely used in many applications where precise alignment and a strong, permanent connection are required. However, in systems with significant misalignment, vibration, or shock loads, flexible couplings may be a more suitable choice to protect the connected components and improve overall system performance and longevity.

China wholesaler Made in China Grooved Fittings Painted Rigid Coupling for Water/Fire/Sewage System  China wholesaler Made in China Grooved Fittings Painted Rigid Coupling for Water/Fire/Sewage System
editor by CX 2024-04-12


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