Nominal Diameter		Long Pattern					Short Pattern
		Nautral Length	Movements				Nautral Length	Movements
DN	NPS	L	Axial Ext.	Axial Comp.	Lateral.	Angular.(°)	L	Axial Ext.	Axial Comp.	Lateral.	Angular.(°)
150	6	180	12	20	14	15	150	10	18	12	12
200	8	210	16	25	22	15	150	10	18	12	12
250	10	230	16	25	22	15	200	14	20	18	12
300	12	245	16	25	22	15	200	14	20	18	12
350	14	255	16	25	22	15	200	14	20	18	12
400	16	255	16	25	22	15	200	14	20	18	12
450	18	255	16	25	22	15	200	14	20	18	12
500	20	255	16	25	22	15	200	14	20	18	12
600	24	260	16	25	22	15	200	14	20	18	12
700	28	320	16	25	22	15	200	14	20	18	12
750	30	260	16	25	22	15	260	16	25	22	15
800	32	340	16	25	22	15	260	16	25	22	12
900	36	370	16	25	22	15	260	16	25	22	12
1000	40	400	18	26	24	15	260	16	25	22	12
1200	48	420	18	26	24	15	260	16	25	22	12
1400	56	450	20	28	26	15	350	18	24	22	12
1500	60	500	20	28	26	15	300	18	24	22	12
1600	64	500	20	35	30	10	350	18	24	22	8
1800	72	550	20	35	30	10	500	22	30	25	8
2000	80	550	20	35	30	10	450	22	30	25	8
2200	88	580	20	35	30	10	400	22	30	25	8
2400	96	610	20	35	30	10	500	22	30	25	8
2600	104	650	20	35	30	10	550	22	30	25	8
2800	112	680	20	35	30	10	550	22	30	25	8
3000	120	680	25	35	30	10	550	22	30	25	8

The main function of the single flange expansion joint is to withstand the pressure and thrust inside the pipeline. Compensation pipeline due to thermal expansion and cold shrinkage caused by the size change, namely compensation pipeline axial displacement. At the same time easy to connect the pump or valve installation, maintenance and disassembly. If the instantaneous pressure of the pipeline is too large or the displacement exceeds the expansion capacity of the expansion device itself, the expansion tube of the expansion device will be broken, resulting in damage to the related connected pumps, valves, and even the entire pipeline. The reason why expansion joints can operate in harsh environments is the material and special surface treatment. Single flange expander is mainly used in the mechanical displacement and heating displacement of the pipeline system to absorb vibration and reduce noise. It can perform displacement absorption in all directions. When installing the expander, adjust the installation length of both ends of the product or the flange. Evenly tighten the gland nuts diagonally, and then adjust the limit nuts, so that the pipe can be freely expanded and contracted within the range of expansion and contraction. Lock the amount of expansion to ensure the operation of the pipeline.