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Bellows Compensator or Expansion Joint

FYL is Bellows Compensator or Expansion Joint manufacturer specializing produce bellows compensator in China. It has complete certificates and quality assurance at all level. Company provide competitive price and good quality for clients. Welcome customer from all over the world.

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Product Description

The FYL series bellows compensator (also known as expansion joint) is a high-performance flexible component engineered to mitigate thermal expansion, vibration, and positional movements in industrial piping systems. With its sophisticated convolution design and premium material selection, FYL bellows compensators effectively absorb axial, lateral, and angular displacements, while isolating mechanical forces and moments from connected piping and equipment—ensuring operational stability and extending the service life of your entire system.

Core Product Advantages

Superior Flexibility & Compensation Capacity: Adopts precision-engineered convolutions (bellows) that deliver exceptional axial, lateral, and angular movement absorption. The optimized waveform design ensures consistent compensation performance even under extreme temperature and pressure fluctuations, avoiding piping deformation or damage.

Premium Material Durability: Crafted from high-grade stainless steel, Inconel, Monel, and other corrosion-resistant alloys, tailored to specific application scenarios. The materials exhibit excellent high-temperature resistance, pressure-bearing capacity, and wear resistance, suitable for harsh working environments such as petrochemical and power generation industries.

Low Noise & Stable Operation: The flexible structure effectively dampens pipeline vibration, reducing operational noise. The seamless connection with flanges or fittings ensures no leakage, and the stable structure prevents shaking during operation, maintaining quiet and reliable performance.

Easy Installation & Universal Compatibility: Equipped with standardized flanges (JDZ/F) and coupling (JDF/J) interfaces, compatible with most industrial piping systems. The compact design simplifies on-site installation and maintenance, reducing downtime and labor costs.

Customizable Solutions: Supports OEM/ODM services, with the ability to design and manufacture bellows compensators according to customer-specific parameters (pressure, temperature, displacement, material), fully meeting personalized project needs.

Technical Parameters

The following parameters cover standard FYL bellows compensator models. For customized specifications, please contact our technical team.

DN	Wave Number	Pressure Mpa					Effective Filtration Area cm2	Outer Diameter Size mm	Length
		0.25	0.6	1	1.6	2.5			Length
		Axial compensation amount mm/ stiffness N/mm							Flange JDZ/F(mm)	Coupling JDF/J(mm)
32	8	25/21	22/26	20/26	18/63	15/98	16	225	160/250	264/280
32	16	50/11	46/14	41/14	36/32	31/47	16	225	244/291	316/321
40	8	25/28	22/44	20/44	18/89	15/106	23	244	164/259	269/289
40	16	50/14	46/22	41/22	36/45	31/55	23	244	230/304	319/334
50	8	25/30	22/51	20/70	18/70	15/138	67	259	172/276	282/306
50	16	50/16	46/26	41/35	36/35	31/70	67	259	240/342	347/372
65	8	33/28	30/35	26/44	22/55	19/68	55	270	215/294	300/322
65	12	42/16	38/22	38/32	34/40	29/50	55	270	260/334	340/362
80	8	40/20	36/26	34/33	28/41	24/54	81	284	240/338	344/366
80	10	53/14	49/17	49/21	43/26	38/33	81	284	270/368	374/390
100	6	45/47	45/60	40/75	35/93	29/117	121	304	235/317	323/345
100	10	76/26	74/32	64/40	57/50	49/63	121	304	305/381	387/409
125	5	48/38	42/47	38/59	34/74	29/92	180	334	282/314	316/342
125	9	85/23	77/29	66/36	58/45	50/56	180	334	382/386	388/414
150	5	49/42	44/50	40/62	34/78	29/97	257	364	282/389	338/367
150	8	79/34	71/43	64/51	54/59	46/65	257	364	356/399	402/427
200	4	52/49	46/55	42/68	38/78	34/111	479	442	280/384	348/372
200	6	73/31	65/44	59/52	53/58	48/78	479	442	340/402	402/426
250	4	72/30	65/34	59/42	52/45	47/55	796	507	315/379	415/379
250	6	108/16	97/21	87/35	79/39	71/47	796	507	393/459	493/399
300	4	72/51	65/55	59/59	52/65	47/71	1105	562	366/427	466/467
300	6	108/32	97/35	87/37	79/41	71/45	1105	562	464/525	564/565
350	4	72/58	65/62	59/67	52/74	47/81	1307	622	397/452	497/492
350	6	108/38	97/41	87/44	79/48	71/47	1307	622	509/564	609/604
400	4	72/54	65/58	59/62	52/68	47/75	1611	700	412/478	512/518
400	6	108/36	97/39	87/43	79/47	71/52	1611	700	522/588	622/628
450	4	108/32	97/35	87/37	79/41	71/45	1972	760	503/498	503/523
450	6	162/20	145/22	131/23	118/25	106/28	1972	760	503/658	603/648
500	4	108/59	97/64	87/68	79/75	71/82	2445	835	431/523	531/554
500	6	162/34	145/37	131/39	118/43	106/48	2445	835	531/655	631/742
600	4	108/74	97/80	87/85	79/94	71/103	3534	980	478/548	578/588
600	6	162/42	145/45	131/49	118/53	106/60	3534	980	658/679	758/781
700	4	108/67	97/72	87/77	79/85	71/95	4717	1110	490	590
700	6	162/42	145/45	131/49	118/53	106/60	4717	1110	690	790
800	4	120/88	108/95	102/102	94/112	82/123	5822	1265	502	602
800	6	183/67	164/72	156/77	144/85	125/93	5822	1265	610	710
900	4	120/84	108/90	102/97	94/107	82/117	7620	1186		689
900	6	183/60	164/65	156/69	144/76	125/84	7620	1186		850
1000	4	120/90	108/98	102/105	94/116		9043	1286		692
1000	6	183/59	164/65	156/71	144/81		9043	1286		855

Application Fields

FYL bellows compensators are widely recognized for their reliability and versatility, serving a broad range of industries and scenarios:

Power Generation: Thermal power plants, nuclear power plants, and hydropower stations—used in boiler systems, steam pipelines, and cooling water pipelines to compensate for thermal expansion and vibration.
Petrochemical & Chemical Industry: Refineries, chemical plants, and natural gas processing facilities—adapts to high-temperature, high-pressure, and corrosive media pipelines, ensuring safe transportation of chemicals and petroleum products.
Water Conservancy & Sewage Treatment: Water supply and drainage systems, sewage treatment plants, and water conservancy projects—resists corrosion from sewage and groundwater, accommodating pipeline settlement and displacement.

Urban Construction & HVAC: Central heating systems, air conditioning pipelines, and municipal piping networks—reduces vibration noise and compensates for thermal expansion in residential and commercial buildings.

Food & Pharmaceutical Industry: Meets hygiene standards, suitable for pipelines transporting food raw materials, pharmaceuticals, and beverages—ensuring no contamination and stable operation.