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Rigid Grooved Coupling

Rigid grooved coupling is a type of mechanical connector used to join pipes, mechanical components, or equipment together. It is typically made from metal materials like carbon steel or stainless steel and features matching grooved ends that securely lock together, ensuring a rigid, fixed connection between the two parts.

Judberd is competitive manufacturer for rigid groove coupling , our drawing is as below

Drawing

Dimension

DN（mm)	Steel pipe outside diameter(mm)	Working Pressure(Mpa/PSI)	Max. End Load(KN/Lbs)	Pipe Ends Gap(mm)	Size of Bolts and Nuts	ф	L	H
25	33.7	2.5/400	3.0/680	0-1.6	2-M10X45	58	101	43
32	42.4	2.5/400	4.8/1080	0-1.6	2-M10X45	66	106	44
40	48.3	2.5/400	6.3/1420	0-3.2	2-M10X45	72	112	44
50	60.3	2.5/400	9.8/2210	0-3.2	2-M10X55	85	125	44
65	73	2.5/400	14.4/3240	0-3.2	2-M10X55	98	139	45
65	76.1	2.5/400	15.7/3520	0-3.2	2-M10X55	101	142	45
80	88.9	2.5/400	21.4/4810	0-3.2	2-M12X60	115	164	45
100	108	2.5/300	31.5/7100	0-3.2	2-M12X65	137	186	48
100	114.3	2.5/300	35.4/7960	0-3.2	2-M12X65	140	194	49
125	133	2.5/300	28.7/6460	0-3.2	2-M12X75	163	214	48
125	139.7	2.5/300	52.9/11800	0-3.2	2-M12X75	166	217	48.5
150	159	2.5/300	41/9240	0-3.2	2-M12X75	190	241	48.5
150	165.1	2.5/300	73.8/16610	0-3.2	2-M12X75	192	243	49
150	168.3	2.5/300	76.7/17260	0-3.2	2-M12X75	201	251	49
200	219.1	2.5/300	116.9/26280	0-3.2	2-M16X85	253	317	59
250	273	2.5/300	163.8/36800	0-3.2	2-M22X130	314	400	63
300	323.9	2.5/300	230.6/51880	0-3.2	2-M22X130	368	452	64
350	355.6	2.5/300	205.5/46220	0-3.2	3-M22X100	406	480	75
400	406.4	2.5/300	268.4/60370	0-3.2	3-M22X100	459	525	75

Function

Rigid Connection: The primary function of a rigid groove coupling is to provide a strong and stable mechanical connection that prevents movement or loosening between the connected components or pipes.
Load Transfer: It effectively transfers mechanical forces or fluid/gas pressure from one part to another.
Leak Prevention: In piping systems, rigid groove couplings help prevent leaks of fluids or gases, particularly in high-pressure applications.

Applications

Rigid grooved couplings are widely used in the following types of equipment and piping systems:

Water Piping Systems: In water supply and drainage systems, rigid grooved couplings are used to connect different sections of pipes, ensuring a smooth flow of water while preventing leaks.

Oil and Gas Pipelines: They are used in pipelines transporting oil, gas, or other fluids to ensure stable and leak-free connections, especially in high-pressure and high-temperature environments.

Industrial Machinery: In industrial machinery, rigid grooved couplings are used to connect machine parts or drive systems, ensuring the stability of mechanical transmissions.

Chemical, Energy, and Mining Equipment: These industries often require couplings that can withstand high pressure and temperature, making rigid grooved couplings an ideal choice for connecting pipes and equipment under demanding conditions.

Working Principle

Rigid grooved coupling connects two pipes or components using grooved ends. The groove design allows the ends to interlock securely, with bolts or other fastening mechanisms holding them in place, ensuring that there is no relative movement between the connected parts and maintaining a rigid connection.