Flexible grooved coupling

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Fire Pipe

Pipe Flanges

Pipe Fitting

Pipe Hanger

Grooved Couplings

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Flexible Grooved Coupling

Applicable pipe diameter: DN50~DN600
Carbon steel clamp: -20°C~+200°C
Standard working pressure: 16-25 bar

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Flexible Grooved Coupling (Flexible Grooved Coupling) is a combination of groove technology and flexible compensation function of the pipeline connectors, designed to solve the pipeline system due to thermal expansion and contraction, mechanical vibration, foundation settlement and other causes of stress and displacement problems.

Flexible Grooved Coupling

Dimensional parameters

Pipe O.D. based on Sch40/Sch80 standard pipes
Tolerance range: ±0.5 mm (DN≤150) or ±1.0 mm (DN>150)

Nominal Diameter (DN) mm	Outside diameter (mm)	pressure (MPa)	Pipe max distance (mm)	Max permissible joint		Bolts and nuts measurement	Measurement (mm)
Nominal Diameter (DN) mm	Outside diameter (mm)	pressure (MPa)	Pipe max distance (mm)	Rotatonadl angle(°)	Dellection(mm)	Bolts and nuts measurement	φ	L	H
25	33.7	2.5	2	3.6	62	2-M10×45	61	98	48
32	42.4		2	2.7	47		70	104
40	48.3		2.5	2.4	42		76	112
50	57			2.3	42	2-M10×55	86	124
50	60.3			2.3	42		88	124
65	76.1			1.9	33		102	140
80	88.9			1.6	28	2-M12×65	118	162
100	108			1.7	29		146	168	51
100	114.3			1.6	28		150	195
125	133			1.4	24		170	220
125	139.7			1.3	23		178	216
150	159			1.2	20	2-M12×75	198	246
150	165			1.1	19	2-M12×75	205	246
150	168.3			1.1	19	2-M16×85	210	266
200	219.1		3.2	0.8	14	2-M16×100	264	330	60
250	273			0.7	12	2-M22×130	328	420	64
300	323.9	1.6		0.6	10	2-M22×130	380	454	64
350	377	1.6		0.6	8	3-M22×130	445	480	77

Advantages

The pipe end should be pre-machined with standard groove (depth 2.5~4.0mm), and the mechanical fixing of the clamp is realized by locking the bolt into the groove.
Clamp material can be carbon steel (galvanized/dacromet treated) or stainless steel (304/316L).
EPDM (temperature resistance -40°C~120°C), NBR (excellent oil resistance) or FKM (high temperature/chemical resistance).
Allow limited pipe displacement (usually ≤5mm) in axial, lateral and angular directions to avoid stress concentration caused by rigid connection.