Product Description

 

Product Name:   
Flexible coupling for connecting fire protection pipes and fittings.

Material:
Ductile cast iron 

Standard: 
UL listed & FM approved
also wen can manufacture different size according to client’s requirement.

Sizes available: 

Nominal size		Pipe O.D.		Working pressure		Dimensions						Bolt size
						∅		L		H
mm	in	mm	in	PSI	Mpa	mm	in	mm	in	mm	in	mm
25	1	33.7	1.327	300	2.07	55.6	2.188	98	3.858	44	1.732	M10*45
32	1 1/4	42.4	1.699	300	2.07	66	2.598	107	4.213	44	1.732	M10*45
40	1 1/2	48.3	1.9	300	2.07	74	2.913	115	4.527	44	1.732	M10*45
50	2	60.3	2.372	300	2.07	84	3.307	124	4.882	44	1.732	M10*55
65	2 1/2	73	2.875	300	2.07	98	3.858	138	5.433	45	1.772	M10*55
65	2 1/2	76.1	3	300	2.07	100	3.937	143	5.63	45	1.772	M10*55
80	3	88.9	3.5	300	2.07	114	4.488	157	6.181	45	1.772	M10*55
100	4	114.3	4.5	300	2.07	140	5.512	187	7.362	50	1.899	M10*65
125	5	139.7	5.5	300	2.07	172	6.771	220	8.661	50	1.899	M12*70
125	5	141.3	5.563	300	2.07	172	6.771	220	8.661	50	1.899	M12*75
150	6	165.1	6.5	300	2.07	197	7.756	252	9.921	51	2.008	M12*75
150	6	168.3	6.625	300	2.07	197	7.756	255	10.039	51	2.008	M12*75
200	8	219.1	8.625	300	2.07	254	10	330	12.992	61	2.405	M16*100
250	10	273	10.75	300	2.07	317	12.48	397.8	15.661	62	2.441	M20*110
300	12	323.9	12.751	300	2.07	370	14.566	457	17.992	60	2.362	M20*120

We can manufacture different size according to your requirement.

About US:
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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.

How does a flexible coupling accommodate changes in shaft alignment due to thermal expansion?

Flexible couplings are designed to accommodate changes in shaft alignment that occur due to thermal expansion in rotating machinery. When equipment operates at elevated temperatures, the materials used in the shafts and other components expand, causing shifts in the relative positions of the connected shafts. This thermal expansion can lead to misalignment, which, if not addressed, may result in additional stress on the equipment and premature wear.

Flexible couplings employ specific design features that allow them to handle thermal-induced misalignment effectively:

• Flexibility: The primary feature of a flexible coupling is its ability to flex and deform to some extent. This flexibility allows the coupling to absorb small amounts of angular, parallel, and axial misalignment that may result from thermal expansion. As the shafts expand or contract, the flexible coupling compensates for the misalignment, helping to maintain proper alignment between the two shafts.
• Radial Clearance: Some flexible couplings, such as elastomeric couplings, have radial clearance between the coupling’s mating parts. This radial clearance provides additional room for the shafts to move laterally during thermal expansion without creating excessive forces on the coupling or connected equipment.
• Sliding Elements: Certain flexible couplings feature sliding elements that can move relative to each other. This capability allows the coupling to accommodate axial displacement resulting from thermal expansion or other factors.
• Flexible Element Materials: The materials used in the flexible elements of the coupling are chosen for their ability to handle the temperature range experienced in the application. Elastomeric materials, for example, can be selected to withstand high temperatures while still maintaining their flexibility.

It is essential to understand that while flexible couplings can compensate for some degree of thermal-induced misalignment, there are limits to their capabilities. If the thermal expansion exceeds the coupling’s compensating range, additional measures, such as incorporating expansion joints or using specialized couplings designed for greater misalignment compensation, may be necessary.

When selecting a flexible coupling for an application with potential thermal expansion, it is crucial to consider the expected operating temperature range and the level of misalignment that may occur due to thermal effects. Working with coupling manufacturers and consulting coupling catalogs can help in choosing the most suitable coupling type and size for the specific thermal conditions of the machinery.

How do you select the appropriate flexible coupling for a specific application?

Choosing the right flexible coupling for a specific application requires careful consideration of various factors to ensure optimal performance, reliability, and longevity. Here are the key steps to select the appropriate flexible coupling:

1. Application Requirements: Understand the specific requirements of the application, including torque and speed specifications, misalignment conditions, operating environment (e.g., temperature, humidity, and presence of corrosive substances), and space limitations.
2. Torque Capacity: Determine the maximum torque that the coupling needs to transmit. Choose a flexible coupling with a torque rating that exceeds the application’s requirements to ensure a safety margin and prevent premature failure.
3. Misalignment Compensation: Consider the type and magnitude of misalignment that the coupling needs to accommodate. Different coupling designs offer varying degrees of misalignment compensation. Select a coupling that can handle the expected misalignment in the system.
4. Vibration Damping: If the application involves significant vibrations, choose a flexible coupling with good damping properties to reduce vibration transmission to connected equipment and improve system stability.
5. Environmental Factors: Take into account the environmental conditions in which the coupling will operate. For harsh environments, consider couplings made from corrosion-resistant materials.
6. Torsional Stiffness: Depending on the application’s requirements, decide on the desired torsional stiffness of the coupling. Some applications may require high torsional stiffness for precise motion control, while others may benefit from a more flexible coupling for shock absorption.
7. Cost and Life-Cycle Considerations: Evaluate the overall cost-effectiveness of the coupling over its expected life cycle. Consider factors such as initial cost, maintenance requirements, and potential downtime costs associated with coupling replacement.
8. Manufacturer Recommendations: Consult coupling manufacturers and their technical specifications to ensure the selected coupling is suitable for the intended application.
9. Installation and Maintenance: Ensure that the selected flexible coupling is compatible with the equipment and shaft sizes. Follow the manufacturer’s installation guidelines and recommended maintenance practices to maximize the coupling’s performance and longevity.

By following these steps and carefully evaluating the application’s requirements, you can select the most appropriate flexible coupling for your specific needs. The right coupling choice will lead to improved system performance, reduced wear on equipment, and enhanced overall reliability in various mechanical systems and rotating machinery.

editor by CX 2024-04-10