Nominal diameter	External diameter of pipe		External diameter		Compensation length	Flange connection size
						0.6Mpa			1.0Mpa
	DW	DO	L	L1		D	D1	n – do	D	D1	n – do
65	76	76	340	105	50	160	130	4 – φ14	185	145	4 – φ18
80	89	89				190	150	4 – φ18	200	160	8 – φ18
100	108	108				210	170		220	180
100	114	114				210	170		220	180
125	133	133				240	200	8 – φ18	250	210
125	140	140				240	200		250	210
150	159	159				265	225		285	240	8 – φ22
150	168	168				265	225		285	240
200	219	219				320	280		340	295
250	273	273				375	335	12 – φ18	395	350	12 – φ22
300	325	325	350	130	65	440	395	12 – φ22	445	400
350	377	377				490	445		505	460	16 – φ22
400	426	426				540	495	12 – φ22	565	515	16 – φ26
450	480	480				595	550	16 – φ22	615	565	20 – φ26
500	530	530				645	600	20 – φ22	670	620	20 – φ26
600	630	630				755	705	20 – φ26	780	725	20 – φ30
700	720	720				860	810	24 – φ26	895	840	24 – φ30
800	820	820	590	220	130	975	920	24 – φ30	1015	950	24 – φ33
900	920	920				1075	1020		1115	1050	28 – φ33
1000	1020	1020				1175	1120	28 – φ30	1230	1160	28 – φ36
1200	1220	1220				1405	1340	32 – φ33	1455	1380	32 – φ40
1400	1420	1428				1630	1560	36 – φ36	1675	1590	36 – φ42
1500	1520	1528				1730	1660
1600	1620	1628				1830	1760	40 – φ36	1915	1820	40 – φ48
1800	1820	1828				2045	1970	44 – φ40	2115	2020	44 – φ48
2000	2020	2030				2265	2180	48 – φ42	2325	2230	48 – φ48
2200	2220	2230				2475	2390	52 – φ42	2550	2440	52 – φ56
2400	2420	2430				2685	2600	46 – φ42	2760	2650	56 – φ56
2600	2620	2630	600	240	150	2905	2810	60 – φ48	2960	2850	60 – φ56
2800	2820	2830				3115	3020	64 – φ48	3180	3070	64 – φ56
3000	3020	3030				3315	3220	68 – φ48	3405	3290	68 – φ60
3200	3220	3230				3525	3430	72 – φ48
3400	3420	3430				3735	3640	76 – φ48
3600	3620	3630				3970	3860	80 – φ26

No.	Name	Quantity	Material
1	Valve nody	1	QT450 – 10、Q235A
2	Gasket	1	NBR
3	Follower	1	QT450 – 10、Q235A
4	Limited short pipe	1	Q235A
5	nut	4n	Q235A、20#
6	long stud	n	Q235A、35#
7	short stud	n	Q235A、35#

single flange limit expansion joint, when install the product on pipeline, screw down the nut, make elastic O-ring seal rely on elastic deformation and coordinate inclination to press tightly on pipe outside, playing function of sealing and connecting.The benefits of single flange metal expansion joints include their ability to absorb vibration and noise, reduce stress on connected piping systems, provide thermal insulation, and prevent water hammer.  They are also relatively easy to install and maintain.Single flange limit metal expansion joints are used to accommodate thermal expansion and contraction of piping systems. They provide flexibility and vibration dampening, as well as reducing stress on connected equipment due to the movement of the pipes. These types of expansion joints are most commonly used in HVAC applications, but can also be found in industrial settings where a high degree of accuracy is not required.