Smartfield Industrial Equipment (Shanghai) Co.,Ltd.

Couplings / accessories

Current position : Couplings / accessories

SFF820 05
Straight Pressure Balanced Expansion Joint

There are two small bellows at each end, connected by a balanced bellow in the center. It can absorb the thrust with balance and to minimize the reaction load.

nominal diameter DN DN (mm)	bellowss		axial Compres- sion Xo (mm)	axial stiffness Kxo (N/mm)	dimension D (mm)	L(mm)
nominal diameter DN DN (mm)	wave No.s (n)	n1/2n2 n1--large bellows wave No.s n2--small bellows wave No.s	axial Compres- sion Xo (mm)	axial stiffness Kxo (N/mm)	dimension D (mm)	pipe (mm)	flange (mm)
Design pressure Pd = 0.6Mpa,fatigue life[N] = 1000,Design temp.= 20°C
600	12	4/8	53	4410	1220	2250	2274
	18	6/12	80	2940		2600	2624
	24	8/16	106	2200		2950	2974
700	12	4/8	54	4945	1365	2250	2274
	18	6/12	80	3297		2600	2624
	24	8/16	108	2473		2950	2974
800	12	4/8	45	7228	1520	2250	2274
	18	6/12	68	4819		2600	2624
	24	8/16	90	3614		2950	2974
900	12	4/8	55	4628	1670	2250	2274
	18	6/12	83	3085		2600	2624
	24	8/16	110	2314		2950	2974
1000	12	4/8	54	5042	1840	2250	2274
	18	6/12	82	3362		2600	2624
	24	8/16	108	2521		2950	2974