Bellows Compensator · Axial Movement · Vibration Damping

Industrial Bellows Expansion Joints for Pipeline Compensation and Noise Reduction

PN6~PN25, 150LB, JIS10K — sizes 1-1/4″ to 40″ (DN32~DN1000mm), available in carbon steel, stainless steel 304 and 316 per ANSI, JIS, DIN, BS standards.

Overview

Bellows expansion joint is normally known as damping bellows compensator or bellows joint, which is mainly made up of bellows, flanges, bellows ends and tie rod. Bellows expansion joints is one type of compensator, which is normally used to make up for axial movement. Although it can also make up for angular movement, it’s not normally used in the actual working conditions. Flowspec Luokai can manufacture and supply the bellows expansion joints according to ANSI, JIS, DIN, BS standards with sizes of 1-1/4″ ~ 40″ (DN32~DN1000mm). Just feel free to contact us now to get best prices. 30 years of experience. High quality. Big stock. Fast delivery.

1. Features

Reduce pipeline system vibration and noise
Good sealing, light weight, easy installation, long service life
Solve the problem of axial movement, transverse movement, angular movement
Acid resistance, alkali resistance, corrosive resistance, oil resistance, heat resistance
If pipeline pressure is high, use tie rods connect the flange both ends

2. Technical Specifications

PN6 / PN10 / PN16 / PN25 / 150LB / JIS10K
Size: 1-1/4″ ~ 40″ (DN32~DN1000mm)
Materials: carbon steel, stainless steel 304, stainless steel 316
Applicable medium: hot water, cold water, weak acid, weak alkali, weak corrosions
Applicable temperature: -40℃ ~ +80℃ (higher temperature is available upon request)

3. Standards

Design & manufacturing: ANSI, JIS, DIN, BS
Face to face: manufacturer’s
Flanged ends: ANSI, JIS, DIN, BS, EN1092
Inspection & testing: manufacturer’s

4. Applications

Water supply and drainage
Recycled water system
Air conditioning and heating
Fire fighting
Shipping
Pump station
Compressor system
Steel works

Parts and Materials

No.	Part	Material
1	Flanges	Steel, Ductile Iron, Stainless Steel
2	Bellows Ends	S.S.304, S.S.316, S.S.321
3	Bellows	S.S.304, S.S.316, S.S.321
4	Tie Rods	Steel, Stainless Steel

Main Connection Dimensions

DN	Bellows Nos	Axial Compensation (mm) / Force (N/mm) at Pressure					Area (cm²)	Max OD (mm)	Length (mm)
DN	Bellows Nos	0.25	0.6	1.0	1.6	2.5	Area (cm²)	Max OD (mm)	Flange	Weld
32	8	25/21	22/26	20/26	18/63	15/98	16	110	160/250	264/210
32	16	46/14	41/14	36/32	31/47	–	220	–	224/291	316/320
40	8	25/28	22/44	20/44	18/89	15/106	23	130	164/259	269/260
40	16	50/14	46/22	41/22	36/45	31/55	240	–	230/304	319/400
50	8	25/30	22/51	20/70	18/70	15/138	37	150	172/276	282/230
50	16	50/16	46/26	41/35	36/35	31/70	260	–	240/342	347/450
65	8	33/28	30/35	26/44	22/55	19/68	55	170	315/294	300/260
65	12	42/16	38/22	38/32	34/40	29/50	280	–	260/334	340/470
80	8	40/20	36/26	34/33	28/41	24/54	81	200	240/338	344/260
80	10	53/14	49/17	49/21	43/26	38/33	230	–	270/368	374/300
100	8	45/47	45/60	40/75	35/93	29/117	121	220	235/317	323/280
100	10	76/26	74/32	64/40	57/50	49/63	260	–	305/381	387/320
125	6	48/38	42/47	38/59	34/74	29/92	180	250	282/314	316/320
125	8	85/23	77/29	66/36	58/45	50/56	290	–	382/386	388/360
150	6	49/42	44/50	40/62	34/78	29/97	257	250	282/339	338/320
150	8	79/34	71/43	64/51	54/59	46/65	290	–	356/399	402/360
200	6	52/49	46/55	42/68	38/78	34/111	479	300	280/348	348/370
200	8	73/31	65/44	59/52	53/58	48/78	340	–	340/402	402/420
250	6	72/30	63/34	59/42	52/45	47/55	769	300	315/379	415/420
250	8	108/16	97/21	87/35	79/39	71/47	360	–	393/459	493/460
300	6	72/51	65/55	59/59	52/65	47/71	1105	340	366/427	466/488
300	8	108/32	97/35	87/37	79/41	71/45	400	–	464/525	564/520
350	6	72/58	65/62	59/67	52/74	47/81	1307	340	397/452	497/480
350	8	108/38	97/41	87/44	79/48	71/47	420	–	509/564	609/540
400	6	72/54	65/58	59/62	52/68	47/75	1611	340	412/478	512/480
400	8	108/36	97/39	87/43	79/47	71/52	420	–	522/588	622/560
450	6	108/32	97/35	87/37	79/41	71/45	1972	340	403/498	503/500
450	8	162/20	145/22	131/23	118/25	106/28	450	–	503/658	603/590
500	6	108/59	97/64	87/68	79/75	71/82	2445	340	431/523	531/500
500	8	162/34	145/37	131/39	118/43	106/48	450	–	531/665	631/600
600	6	108/74	97/80	87/85	79/94	71/103	3534	380	478/548	578/540
600	8	162/42	145/45	131/49	118/53	106/60	–	–	658/679	758/640
700	4	108/67	97/72	87/77	79/85	71/95	4717	1110	490	550
700	6	162/42	145/45	131/49	118/53	106/60	–	–	690	670
800	4	120/88	108/95	102/102	94/112	82/123	5822	1265	502	560
800	6	183/67	164/72	156/77	144/85	125/93	–	–	610	600
900	4	120/84	108/90	102/97	94/107	82/117	7620	1186	620	–
900	6	183/60	164/65	156/69	144/76	125/84	–	–	720	–
1000	4	120/91	108/98	102/105	94/166	–	9043	1286	690	–
1000	6	183/59	164/65	156/71	144/81	–	–	–	790	–