China best DN 65 Grooved Flexible Coupling with FM UL Certificate in Fire System Project

Product Description

Product Description

A grooved reducing flex joint is a mechanical pipe joint that allows pipes of different diameters to be joined while providing a degree of flexibility. These couplings consist of 2 grooved end fittings and a flexible gasket or sleeve that is installed on the pipe. Grooves on the pipe ends provide a strong mechanical connection when the fitting is tightened.

Application:
Grooved reducing flexible joints are commonly used in a variety of piping systems such as:

CHINAMFG (Heating, Ventilation, and Air Conditioning): Used to connect ducts in CHINAMFG systems where flexibility may be required due to thermal expansion and contraction.

Fire Protection Systems: Typically used in fire sprinkler systems to connect pipes of different sizes while allowing for movement due to temperature changes.

Water and Wastewater Systems: For water and drainage systems where flexibility and ease of installation are important.

Industrial Piping: Used in industrial applications where grooved coupling systems are favored for their simplicity and speed of installation.

Material standards for groove couplings:
Material standards for grooved couplings are often set by industry organizations and standards bodies. The material used for grooved joints is usually ductile iron, but stainless steel and other materials can also be used, depending on the application and specific requirements.

Standards governing grooved couplings include:

ANSI/AWWA C606 – Groove and Shoulder Joints for Ductile Iron Pressure Piping and Fittings: This standard covers groove and shoulder joints for ductile iron pressure piping, fittings, and other components.

ASTM A536 – Standard Specification for Ductile Iron Castings: This standard covers compositional, mechanical, and other requirements for ductile iron castings.

NFPA 13 – Standard for Installation of Sprinkler Systems: This standard, published by the National Fire Protection Association, provides guidance for the installation of sprinkler systems, including the use of grooved joints.

Nominal Size
mm/in
Pipe O.D

mm

Working
Pressure
PSI/Mpa
Dimensions      mm Bolt Size Certificate
L H W NO.-Size

mm

65X50/212X2 73X60 300/2.07 143 102 45 M10X65 FM  UL
65X50/30DX2 76X60 300/2.07 143 102 45 M10X65 FM  UL
80X50/3X2 89X60 300/2.07 163 118 47 M12X70 FMUL
80X65/3X212 89X73 300/2.07 163 118 47 M12X70 FMUL
100X50/4X2 114X60 300/2.07 200 150 50 M12X70 FMUL
100X65/4X212 114X73 300/2.07 200 150 50 M12X70 FM  UL
100X65/4X3OD 114X76 300/2.07 200 150 50 M12X70 FM  UL
100X80/4X3 114X89 300/2.07 200 150 50 M12X70 FMUL
150X100/612ODX4 165X114 300/2.07 270 200 51 M16X85 FM  UL
150X80/6X3 168X89 300/2.07 270 200 51 M16X85 FMUL
150X100/6X4 168X114 300/2.07 270 200 51 M16X85 FM  UL
200X150/8X612OD 219X165 300/2.07 335 260 63 M20X110 FM  UL
200X150/8X6 219X168 300/2.07 335 260 63 M20X110 FMUL

Quality Control:

what is the rigid and flexible Coupling difference?

Coupling play an important role in connecting pipe segments to prevent leaks caused by damaged or damaged joints while maintaining the integrity of the pipe in the process. It is a very suitable fitting for the pipe and pipe industry. Most pipe installations require multiple pipe sections to be joined together or cut to facilitate changing direction and traversing obstacles. A fitting is a concise pipe or pipe. It has a socket or female thread at 1 or both ends. Fitting allows 2 pipes or pipes of the same or different sizes to be joined together to form a long pipe.

Flexible coupling
Flexible couplings are designed to transmit torque while allowing some radial, axial and angular misalignment. They can accommodate angular misalignment of up to a few degrees and some parallel misalignment. Elastic couplings allow for some angular misalignment and axial movement, meaning they can be used to create smooth bends and absorb thermal expansion contractions in piping systems. In some cases, the use of elastic couplings can even exclude conventional expansion joints, loops and other expansion devices from the system entirely. When assembling a stretch rubber gasket, the gasket is slightly smaller than the pipe diameter at both pipe ends and produces the first seal. The 2 halves of the coupling are then placed around the washers that adapt to them. The coupling halves are bolted together to further improve the seal.

FAQ

1. What is the minimum quantity of the order? 
Answer: The purchase volume of mixed products is 4 tons

2. How long is the delivery time of the order?
Answer: The delivery time for general orders is about 30 days. If the order is urgent and we have stock, around 7 days.

3. What payment methods do you accept?
Answer: We accept payment terms such as TT, L/C, DP, Western Union, Paypal, etc.

4. Where is your departure port of shipment? Is it possible to deliver to the designated warehouse?
Answer: The port of departure of our goods is generally ZheJiang Port or HangZhou Port. We can transport the goods to designated warehouses, such as HangZhou, HangZhou, etc.

5. What certificates do your products have?
Answer: Our products have FM/UL certificates, and we cooperate with third-party quality inspection certification before the factory, such as SGS,TUV

6.What are the series of your products?
Answer: Our products are divided into heavy series, medium series and light series according to different markets and standards. In order to buy more competitive products for you, please communicate your purchasing needs with the salesperson.

7. Do product packaging cartons and labels support customization?
Answer: Packaging cartons and labels can be customized according to customer requirements.

8.Does the purchased product support customization?
Answer: The product supports customization, but there are purchase quantity requirements and mold costs. For details, please consult the salesperson.

9.What are the packaging methods of the product?
Answer: The packaging of the product includes carton packaging, pallet packaging, wooden box packaging, and woven bag packaging.
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flexible coupling

Can flexible couplings be used in food processing and pharmaceutical industries?

Yes, flexible couplings can be used in both the food processing and pharmaceutical industries under certain conditions. These industries have stringent requirements for equipment used in their processes, including hygienic design, cleanliness, and resistance to contamination. Here’s how flexible couplings can be used in these industries:

  • Hygienic Design: In food processing and pharmaceutical applications, flexible couplings with hygienic designs are essential to prevent the accumulation of food particles, dust, or other contaminants. Stainless steel or FDA-approved materials are commonly used to ensure compliance with hygiene standards and ease of cleaning.
  • Cleanability: The equipment used in food processing and pharmaceutical industries must be easily cleanable to maintain product purity. Flexible couplings with smooth surfaces and no crevices or pockets that can trap particles are preferred.
  • Chemical Resistance: Some food processing and pharmaceutical applications involve the use of cleaning agents or chemicals. Flexible couplings must be resistant to these chemicals to prevent degradation and ensure long-term reliability.
  • Corrosion Resistance: In food processing and pharmaceutical environments, equipment is often exposed to washdowns and sanitizing solutions. Flexible couplings made of corrosion-resistant materials can withstand these conditions and maintain their performance over time.
  • Compliance with Standards: The food processing and pharmaceutical industries are subject to strict regulations and standards. Flexible couplings used in these industries should comply with relevant industry standards, such as FDA, EHEDG, or NSF standards.
  • Non-Toxic Materials: Flexible couplings used in direct contact with food or pharmaceutical products must be made of non-toxic materials that will not contaminate the process.
  • Resistant to Temperature Extremes: Some food and pharmaceutical processes involve extreme temperatures. Flexible couplings must be capable of withstanding high and low temperatures without compromising their integrity.

When selecting flexible couplings for food processing and pharmaceutical applications, it is essential to work closely with manufacturers and suppliers who understand the industry’s unique requirements. Customized solutions may be necessary to ensure that the couplings meet the specific needs of the application and comply with industry standards.

Summary: Flexible couplings can be used in food processing and pharmaceutical industries when they meet the necessary hygiene, cleanability, chemical resistance, corrosion resistance, compliance with standards, and temperature resistance requirements. Proper selection and application of flexible couplings can contribute to the efficiency and reliability of equipment in these critical industries.

flexible coupling

How does a flexible coupling help in torque and rotational speed control?

A flexible coupling plays a crucial role in torque and rotational speed control in rotating machinery. It offers several benefits that contribute to efficient power transmission and help maintain desired operating conditions:

  • Torque Transmission: Flexible couplings transmit torque from one shaft to another while accommodating misalignments. They provide a reliable connection that allows the driving shaft to transfer rotational force (torque) to the driven shaft without causing undue stress on the connected components.
  • Smooth Power Transmission: Flexible couplings help reduce shocks and vibrations that can occur during startup, shutdown, or sudden load changes. By damping these vibrations, the coupling ensures smooth power transmission and protects the connected equipment from unnecessary wear.
  • Rotational Speed Control: In certain applications, especially those involving precision motion control, maintaining consistent rotational speed is critical. Flexible couplings can help by minimizing backlash and torsional wind-up. Backlash refers to the play or gap between the coupling’s components, while torsional wind-up is the twisting deformation that can occur under torque load. Flexible couplings with low backlash and high torsional stiffness contribute to accurate rotational speed control.
  • Compensation for Misalignment: Rotating machinery may experience misalignment due to various factors such as thermal expansion, foundation settling, or machining tolerances. Flexible couplings accommodate angular, parallel, and axial misalignments, which helps in maintaining proper alignment between the shafts and reduces unnecessary torque variations.
  • Protection from Overloads: Flexible couplings can act as a mechanical fuse by disengaging or slipping when subjected to excessive torque loads. This feature protects the connected components from damage caused by sudden overloads or jamming events.
  • Energy Efficiency: Certain types of flexible couplings, such as elastomeric couplings or beam couplings, have low mass and inertia. This characteristic reduces energy losses and contributes to overall system efficiency.

By providing reliable torque transmission, smooth power transfer, rotational speed control, and compensation for misalignment, flexible couplings optimize the performance and longevity of rotating machinery. Additionally, they enhance the safety and efficiency of various industrial processes by protecting equipment from excessive loads and ensuring smooth operation in diverse applications.

flexible coupling

What industries commonly use flexible couplings for power transmission?

Flexible couplings are widely used in various industries for power transmission and motion control applications. Their ability to accommodate misalignment, dampen vibrations, and protect equipment from shock loads makes them valuable components in many industrial processes. Here are some of the industries that commonly utilize flexible couplings:

  • Manufacturing: Flexible couplings are extensively used in manufacturing industries such as automotive, aerospace, electronics, and consumer goods production. They play a critical role in transmitting power between motors and various machinery, including conveyor systems, robots, and assembly lines.
  • Oil and Gas: In the oil and gas industry, flexible couplings are used in pumps, compressors, turbines, and generators. They help transfer power in offshore platforms, refineries, pipelines, and drilling operations while compensating for the dynamic nature of these applications.
  • Power Generation: Power plants, both conventional and renewable, rely on flexible couplings to transmit power from turbines and generators to electrical generators. They are used in coal-fired, natural gas, nuclear, hydroelectric, and wind power plants.
  • Mining: In mining operations, flexible couplings are employed in various equipment, including conveyor systems, crushers, and large industrial pumps. They are designed to withstand the heavy loads and harsh conditions commonly found in mining environments.
  • Marine: Flexible couplings are essential in marine propulsion systems, connecting engines to propellers or water jets. They also find use in shipboard machinery, auxiliary systems, and offshore applications.
  • Pulp and Paper: The pulp and paper industry relies on flexible couplings in machinery used for wood processing, pulp production, papermaking, and printing processes.
  • Chemical and Petrochemical: In chemical plants and petrochemical refineries, flexible couplings are utilized in pumps, mixers, agitators, and other rotating equipment to ensure efficient power transmission and protect sensitive machinery.
  • Construction: The construction industry employs flexible couplings in various equipment, such as concrete pumps, cranes, excavators, and drilling machines.
  • Water and Wastewater: Flexible couplings are used in water treatment plants, wastewater facilities, and irrigation systems to transfer power between motors and pumps.
  • Agriculture: In agricultural machinery, flexible couplings are utilized in tractors, harvesters, and irrigation systems, enabling efficient power transmission and operation.

The versatility and adaptability of flexible couplings make them indispensable components in a wide range of industries, contributing to increased equipment reliability, reduced downtime, and improved overall system performance.

China best DN 65 Grooved Flexible Coupling with FM UL Certificate in Fire System Project  China best DN 65 Grooved Flexible Coupling with FM UL Certificate in Fire System Project
editor by CX 2024-05-06


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