Product Description

Product Description

 Ductile Iron Cast Iron Grooved Pipe Fittings Reducing Coupling
FM/UL Rigid or Flexible Couplings/Reducing Tee/Mechanical Tee/Elbow/Cross/Flange/Reducer/Cap/Grooved Pipe Fittings Grooved Couplings
FM/UL Rigid or Flexible Couplings/Reducing Tee/Mechanical Tee/Elbow/Cross/Flange/Reducer/Cap/Grooved Pipe Fittings Grooved Couplings

Ductile iron grooved pipe fittings and couplings (FM and UL approved) mainly including 2 kinds of grooved products:

(1) the pipe fittings function on connecting and sealing such as rigid coupling, flexible coupling, mechanical tee and grooved flange,

(2) the pipe fittings function on connecting and transition such as bend, tee, cross, reducer.




Name Rigid coupling, Flexible coupling, 90° Elbow, 45° Elbow, 22.5° Elbow, 11.25° Elbow, Split Flange, Adaptor Flange, Cap
Tee, Reducing Tee(Grooved/Threaded), Mechnical Tee(Grooved/Threaded), U-bolted Mechnical Tee
Cross, Reducing Cross(Grooved/Threaded), Mechnical Cross(Grooved/Threaded)
Reducer(Grooved/Threaded), Grooved Eccentric Reducer
H.S. CODE 735710000
Technology Casting
Connections Grooved-Thread End, Grooved End
Pressure Rate 300PSI / 2.07MPa
Size 1” – 12”
Pipe O.D. 33.7MM – 323.9MM
Surface Finish Epoxy Powder,Painting,Galvanization,Dacromet (in Red/Orange/Blue/White Color)
Design Standard American Standard ANSI/ASTM
European Standard EN
British Standard BS
Germany Standard DIN
Japanese Standard JIS
ISO Standard ISO
Thread Standard ASME B.1.20.1 / EN15716 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN15716 / BS 21.173
Material Standard Ductile Iron confirms to ASTM A-536 Gr65-45-12,EN1563,JIS G5502,QT450-12
Gasket Material EPDM,NBR or Silicon Rubber
Bolts & Nuts ISO 898-1class 8.8
Flanges Standard PN series or Class series
Packages Plywood Cases or Plywood Pallets or Boxes
Application Fire Fighting System,Petrochemical & Gas Industry,Chemical,Machinery,Electric Power,Construction Water Works,Valve Industry,etc.
Advantages High Quality + Ready Stock + Faster Delivery + Customized
Brand LMP
Certificate ISO9001,API,CE,UL/FM




Company Profile



We are a leading manufacturer of pipe fittings and valves establised in 1996
1.  We have over 20 years experience in exporting pipeline products.
2.  5 factories,complete 100+ projects every year.
3.  Your 1 more good choice for better customer service.



1.Who are we?
We are based in ZheJiang , China, start from 2004,sell to South America(25.00%),North America(25.00%),Mid East(20.00%),Eastern Europe(20.00%),Western Europe(5.00%),Africa(5.00%). There are total about 1000+ people in our office.
2.How can we grurantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
OEM products,Concrete Hardware System,ELECTRICAL POWER FITTING,Valve&Valve Parts,Pipe Fittings
4.Why should you buy from us not from other suppliers?
Eathu Group is one of the biggest manufacturers and exporters of pipeline products in China. We specialize in pipeline products, and casting and forging products, we have more than 15years experience for production, quality control and export.
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CHF;
Accepted Payment Type: T/T,L/C,MoneyGram,Credit Card,PayPal,Western Union,Cash;
Language Spoken:English,Chinese,Spanish

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mechanical coupling

How to identify the most suitable mechanical coupling for a specific application?

Choosing the right mechanical coupling for a specific application requires careful consideration of various factors. Here are the steps to help identify the most suitable coupling:

1. Understand Application Requirements:

Begin by thoroughly understanding the requirements of the application. Consider factors such as torque and speed requirements, misalignment allowances, space constraints, environmental conditions, and any specific industry standards.

2. Evaluate Shaft Misalignment:

Determine the type and amount of misalignment expected between the connected shafts. If significant misalignment is anticipated, flexible couplings may be more appropriate.

3. Consider Torque and Power Transmission:

Calculate the torque and power that the coupling will need to transmit between the shafts. Ensure that the selected coupling can handle the expected load without exceeding its rated capacity.

4. Assess Operating Speed:

Take into account the operating speed of the system. High-speed applications may require couplings designed for high rotational speeds to avoid issues like resonance.

5. Evaluate Environmental Factors:

Consider the environmental conditions in which the coupling will operate. For example, corrosive or harsh environments may require couplings made from specific materials like stainless steel.

6. Review Space Limitations:

Examine the available space for installing the coupling. In some cases, compact couplings may be necessary to fit within confined spaces.

7. Analyze Misalignment Compensation:

For applications where precise alignment is challenging, choose couplings that offer misalignment compensation, such as flexible couplings or universal couplings (Hooke’s joints).

8. Consider Vibration Damping:

If the application involves vibrations or shock loads, consider couplings with vibration damping properties, like certain types of flexible couplings.

9. Account for Maintenance Requirements:

Factor in the maintenance needs of the coupling. Some couplings may require periodic inspections and replacement of components, while others are relatively maintenance-free.

10. Seek Expert Advice:

If unsure about the most suitable coupling for the application, consult with coupling manufacturers or engineering experts who can provide guidance based on their expertise and experience.

By systematically evaluating these factors and requirements, engineers and designers can narrow down the options and select the most appropriate mechanical coupling that will ensure reliable and efficient operation in the specific application.

“`mechanical coupling

Explaining the impact of mechanical coupling wear on system efficiency.

Mechanical coupling wear can have a significant impact on the efficiency and performance of a mechanical system. As couplings wear over time, several factors come into play that affect the overall efficiency of the system:

1. Loss of Torque Transmission:

As couplings wear, they may develop gaps or play between the mating components. This can result in a loss of torque transmission between the connected shafts. Reduced torque transmission leads to diminished power transfer and can result in inadequate performance of the system, especially in high-torque applications.

2. Misalignment Issues:

Worn couplings may not effectively compensate for misalignments between the connected shafts. Misalignment can cause additional stress on bearings, gears, and other components, leading to increased wear and reduced system efficiency. It can also result in increased vibration and noise, further impacting the system’s performance.

3. Vibration and Resonance:

Wear in flexible couplings can lead to increased vibration and resonance within the system. Excessive vibrations can cause premature failure of components and reduce the overall system efficiency. Vibrations can also create a safety hazard for operators and equipment.

4. Energy Losses:

Worn couplings may introduce energy losses due to friction and slippage. These losses decrease the overall efficiency of the system and result in additional energy consumption to achieve the desired output.

5. Increased Maintenance Costs:

As couplings wear, they may require more frequent maintenance and replacement. The increased downtime for maintenance and the cost of replacing worn couplings can impact the system’s productivity and increase operational expenses.

6. Reduced System Reliability:

Worn couplings are more prone to sudden failures, leading to unplanned downtime. Unreliable systems can disrupt production schedules, affect product quality, and result in lost revenue.

7. Safety Concerns:

Worn couplings can compromise the safety of personnel and equipment. They may lead to unexpected failures, flying debris, or even catastrophic accidents in severe cases.

8. Impact on Product Quality:

In certain industries, like precision manufacturing or aerospace, system efficiency directly affects product quality. Worn couplings can cause inaccuracies, leading to subpar products and potential rework or rejection.

To maintain optimal system efficiency and prevent these issues, it is crucial to perform regular inspections and maintenance of mechanical couplings. Timely replacement of worn couplings and adherence to manufacturer’s guidelines for installation and maintenance can significantly contribute to the overall efficiency, reliability, and safety of the mechanical system.

“`mechanical coupling

Can a faulty mechanical coupling lead to equipment failure and downtime?

Yes, a faulty mechanical coupling can indeed lead to equipment failure and downtime in a mechanical system. The importance of well-maintained and properly functioning couplings cannot be overstated, and their failure can have significant consequences:

1. Loss of Torque Transmission:

A faulty coupling may not be able to effectively transmit torque from the motor to the driven load. This loss of torque transmission can result in reduced or erratic performance of the equipment.

2. Increased Wear and Damage:

When a coupling is not functioning correctly, it may introduce excessive play or misalignment between the connected components. This can lead to increased wear on bearings, shafts, gears, and other parts, accelerating their deterioration.

3. Vibrations and Resonance:

Faulty couplings can cause vibrations and resonance in the system, leading to stress and fatigue in the equipment. These vibrations can further propagate throughout the machinery, affecting nearby components and leading to potential failures.

4. Overloading and Overheating:

In some cases, a faulty coupling may not slip or disengage as intended when subjected to overload conditions. This can cause excessive stress on the equipment, leading to overheating and potential damage to the motor, gearbox, or other components.

5. System Downtime:

When a mechanical coupling fails, it often necessitates equipment shutdown for repairs or replacement. This unplanned downtime can lead to production halts, reduced efficiency, and financial losses for businesses.

6. Safety Risks:

A faulty coupling that fails to disconnect or slip during overloads can pose safety risks to personnel and equipment. It may lead to unexpected and potentially dangerous equipment behavior.

7. Costly Repairs and Replacements:

Fixing or replacing damaged components due to coupling failure can be costly. Additionally, if a faulty coupling causes damage to other parts of the system, the repair expenses can escalate.

Regular maintenance and inspections of mechanical couplings are crucial to detect early signs of wear or damage. Identifying and addressing issues promptly can help prevent equipment failure, reduce downtime, and ensure the smooth and efficient operation of mechanical systems.

China OEM Fire Protection System Ral3000 Ductile Iron Grooved Mechanical Tee Flexible Coupling  China OEM Fire Protection System Ral3000 Ductile Iron Grooved Mechanical Tee Flexible Coupling
editor by CX 2024-03-11