Flexible Single Arch Expansion Joint (DN3600)

Rubber Flexible Joint, Rubber Expansion Joint, Rubber Joint, Flexible Joint, Pipe Joint, Rubber Compensator, Pipe Compensator, Expansion Joint

DN35~5000mm single-ball flanged rubber coupling feature rugged yet flexible polyester cord fabric reinforcement, to ensures an exceptional burst pressure rating.
The streamlined flowing arch design reduces turbulence and allows smooth, quiet flow-no need to fill the arch and restrict its movement.

1. Benefits
Flowing arch design prevents sediment buildup and reduces turbulence. Floating flanges can be rotated to accommodate torsion misalignment. Molded spherical bellows accommodate up to one inch of axial movement and transverse deflection polyester-reinforced nitrile tube earns high pressure rating without sacrificing flexibility; Resists most hydrocarbons, oils and gasoline

2. Application Scope
Due to the sound complex performance of the rubber compensators, it is mainly used for the lift and transport of raw water and sewage, and pipeline transportation of feed-water and water for cooling circulation in thermal power plants, condensed water in metallurgy and chemical substances in chemical industry as well as dilution and flexible connection between short and long pipelines. Relying on the high abrasion resistance of rubber, it is also suitable for the transportation under low temperature of powdery and grainy air in any industry.

3. Material List :
No.	Name	Material
1)	Inner rubber lining	IIR,CR,EPDM,NR,NBR
2)	Outer rubber lining	IIR,CR,EPDM,NR,NBR
3)	Casing ply	Polyester cord fabric
4)	Flange	Q235A,stainless steel
5)	Strengthening ring	Q235A
6)	Stopper	Q235A,stainless steel
7)	Limit bar	Q235A,35#,stainless steel
8)	Nut	Q235A,35#,stainless steel
4. Physical and Mechanical Properties of Rubber Expansion Joint :
No.	Item	index	Measured value
Inner/outer rubber lining
1)	Tensile strength (Mpa)	≥12	13.5
2)	Tensile yield (%)	≥450	560
3)	Tension set at break (%)	≤25	20
4)	Hardness (Shore A hardness)	60±5	60
5)	Brittleness temperature (°C)	≤-30	-40
6)	Cohesive strength (between cord fabric) (KN/m)	≥2.0	4.8
7)	100°Cx48h Hot air aging	Rate of Tensile Strength Reduction	≤25	15
Rate of Ultimate Elongation Reduction	≤30	20
8)	Mass change (10%H2SO4*Room temperature) %	≤3	2
9)	Mass change (10%H2SO4*Room temperature) %	≤3	2
5. Technical Parameters for Double Sphere Flexible Rubber Joint :
DN Diameter	FF Length (mm)	Axis displacement	Radial displacement	Deflexion displacement
Type-I	Type-II	Type-I	Type-II	Type-I	Type-II
mm	inch	Extension	Compression	Extension	Compression
32	1¼″	90	6	10			9		±7.5°
40	1½″	95	7	10			9		±7.5°
50	2″	105	7	10			10		±7.5°
65	2½″	115	7	13			11		±7.5°
80	3″	135	8	15			12		±7.5°
100	4″	150	10	19			13		±7.5°
125	5″	165	12	19			13		±7.5°
150	6″	180	12	20			14		±7.5°
200	8″	210	16	25	30	35	22	25	±7.5°	±10°
250	10″	230	16	25	30	40	22	25	±7.5°	±12°
300	12″	245	16	25	30	40	22	25	±7.5°	±12°
350	14″	255	16	25	35	45	22	30	±7.5°	±12°
400	16″	255	16	25	35	45	22	30	±7.5°	±12°
450	18″	255	16	25	36	47	22	30	±7.5°	±12°
500	20″	255	16	25	36	48	22	30	±7.5°	±12°
600	24″	260	16	25	40	50	22	33	±7.5°	±12°
700	28″	260	16	25	40	55	22	33	±7.5°	±12°
750	30″	260			40	55		33		±12°
800	32″	260	16	25	45	55	22		±7.5°	±12°
900	36″	260	16	25	45	55	22	35	±7.5°	±12°
1000	40″	260	16	25	45	60	22	35	±7.5°	±12°
1100	44″	300			45	60		35	±7.5°	±12°
1200	48″	300	16	25	50	60	24	38	±7.5°	±10°
1300	52″	300			50	60		38		±10°
1400	56″	350			50	70		40		±10°
1500	60″	350			60	70		40		±10°
1600	64″	350	18	25	60	70	24	46	±7.5°	±10°
1800	72″	400	18	25	60	75	24	48	±7.5°	±10°
2000	80″	450			70	75		50		±10°
2200	80″	400			70	75		50		±10°
2200	88″	500			70	80		60		±10°
2400	96″	500			80	80		60		±10°
2600	104″	500			85	80		60		±10°
2800	112″	550			85	80		60		±10°
3000	120″	550			85	80		60		±10°