Smartfield Industrial Equipment (Shanghai) Co.,Ltd.

Couplings / accessories

Current position : Couplings / accessories

SFF820 04
Double Tied Expansion Joint

The expansion joint is mainly composed of two bellows, middle connection tube and one large rod, it can absorb the lateral displacement in any plane of the pipe system.The spherical nut on the large rod moves around the spherical washers when displacement,and the large rod also has the ability to bear internal pressure thrust.

Nominal Diameter DN (mm)	Wave No.s n	Effective Area A (cm²)	Y-lateral compensation amount(mm) Ky-lateral stiffness(N / mm)															AxB (mm)
			Total Length L( mm)
			1500		2000		2500			3000				3500
			Y	Ky	Y	Ky	Y		Ky	Y		Ky		Y		Ky
design pressure Pd = 1.6Mpa , fatigue life[N] = 1000, design temp.= 20°C
400	8 (4+4)	1626	52	258	86	130	121		55	156		34						700×760
450		2011	46	359	77	144	108		77	139		48						700×750
500		2437	42	482	69	193	97		103	125		64						810×890
600		3484	41	709	80	236	120		116	160		69		201		45		900×980
700		4754	40	884	77	295	116		145	155		86		194		57		970
800		6055	35	1240	68	413	101		203	135		120		169		79		1070
900		7512	31	1685	60	562	90		276	120		164		150		108		1170
1000		9315	30	2676	57	892	86		439	115		260		144		172		1300
design pressure Pd = 2.5Mpa , fatigue life[N] = 1000, design temp.= 20°C
200	8 (4+4)	535	94	58	147	25		201	14								500×560
250		779	76	102	118	45		161	25	204	16						540×600
300		1075	76	130	121	56		166	31	211	20						570×630
350		1269	62	209	103	84		144	45	186	28						670×730
400		1626	53	304	89	122		125	65	161	40						700×760
450		2011	47	421	78	169		109	90	141	56						770×750
500		2428	43	566	71	227		99	121	128	75						810×890
600		3477	35	1243	68	414		102	204	136	121		171		180		900×980