Nominal diameter	External diameter of pipe	External dimension		Compensation length	Flange connection size
					0.6Mpa			1.0Mpa
		L	L1		D	D1	n – do	D	D1	n – do
65	76	340	105	50	160	130	4 – φ14	185	145	4 – φ18
80	89				190	150	4 – φ18	200	160	8 – φ18
100	108				210	170		220	180
100	114				210	170	8 – φ18	220	180
125	133	340	105	50	240	200		250	210
125	140				240	200		250	210
150	159				265	225		285	240	8 – φ22
150	168				265	225		285	240
200	219				320	280		340	295
250	273				375	335	12 – φ18	395	350	12 – φ22
2300	325	370	130	65	440	395	12 – φ22	445	400
350	377				490	445		505	460	16 – φ22
400	426				540	495	16 – φ22	565	515	16 – φ26
450	480				595	550		615	565	20 – φ26
500	530				645	600	20 – φ22	670	620	20 – φ26
600	630				755	705	20 – φ26	780	725	20 – φ30
700	720				860	810	24 – φ26	895	840	24 – φ30
800	820	600	220	130	975	920	24 – φ30	1015	950	24 – φ33
900	920				1075	1020		1115	1050	28 – φ33
1000	1020				1175	1120	28 – φ30	1230	1160	28 – φ36
1200	1220				1405	1340	32 – φ33	1455	1380	32 – φ40
1400	1420	640	240	150	1630	1560	36 – φ36	1675	1590	36 – φ42
1500	1520				1730	1660
1600	1620				1830	1760	40 – φ36	1915	1820	40 – φ48
1800	1820				2045	1970	44 – φ40	2115	2020	44 – φ48
2000	2020				2265	2180	48 – φ42	2325	2230	48 – φ48
2200	2220				2475	2390	52 – φ42	2550	2440	52 – φ56
2400	2420				2685	2600	56 – φ42	2760	2650	56 – φ56
2600	2620	710			2905	2810	60 – φ48	2960	2850	60 – φ56
2800	2820				3115	3020	64 – φ48	3180	3070	64 – φ56
3000	3020				3315	3220	68 – φ48	3405	3290	68 – φ60
3200	3220				3525	3430	72 – φ48
3400	3420				3735	3640	76 – φ48
3600	3620				3970	3860	80 – φ56

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#

VSSJA-2 double flange loosing stop metal expansion joint is also called B2F pipe compensator in GB/T12645-2007, it consists of body, follower, gland and slip pipe. Based on VSSJA flange adaptor, there are another two flanges and slip pipe. Compared with VSSJA-1 single flange loosing stop expansion joint connection, which connection is one end flange, one end welding.this product requires very minimal maintenance making it both cost efficient and easy-to-use for any application where flexibility must be combined with reliable performance—saving you time & money down the line! With all these benefits combined together you can rest assured knowing that your pipes are protected against vibrations & corrosion whilst ensuring optimal flow rates throughout your networked piping system!