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Single flange loose sleeve expansion joint

Flange loose sleeve expansion joint is also called flange loose sleeve compensation joint or flange loose sleeve expansion joint. The flange loose sleeve expansion joint consists of a body, a gland, a sealing ring, and fasteners. It adopts the same sealing principle as the gland loose sleeve expansion joint. The connection method is flange connection at one end and socket connection at the other end, which is suitable for connecting equipment such as valves and pipes. The flange loose sleeve expansion joint can compensate for the axial displacement and a certain amount of deflection and eccentricity of the pipeline while connecting, thereby protecting equipment such as valves. The socket is also suitable for connecting with steel pipes, cast iron pipes, ductile iron pipes, pac pipes, abs pipes, etc.

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Introduction to Flange Loose Sleeve Expansion Joint

Advantages of loose flange expansion joints

After the flange loose sleeve expansion joint is installed on the pipe, tighten the nut elastic sealing ring. Under the action of the nut gland, it relies on mutual inclination to tightly press the outer ring of the pipe for sealing and connecting purposes. When the temperature changes, the pipe can freely expand and contract in the middle of the joint. When the foundation sinks, the pipe can deflect and ensure that there is no leakage in the seal, thereby achieving the purpose of automatic compensation.

Technical parameters of flange loose sleeve expansion joint

Nominal Diameter DN	External diameter of pipe DW	Length		Flange connecting dimension
		Length		0.25Mpa			0.6Mpa			1.0Mpa
		L1	L	D	D1	n-do	D	D1	n-do	D	D1	n-do
65	76	105	118	160	130	4-14	160	130	4-14	185	145	4-18
80	89		118	190	150	4-18	190	150	4-18	200	160	8-18
100	108		123	210	170		210	170		220	180
100	114			210			210	170		220	180
125	133			240	200	8-18	240	200	8-18	250	210
125	140			240			240	200		250	210
150	159			265	225		260	225		285	240	8-22
150	168			265			260	225		285	240
200	219			320	280		320	280		340	295
250	273		130	375	335	12-18	375	335	12-18	395	350	12-22
300	325	130	160	440	395	12-22	440	395	12-22	445	400	12-22
350	355			490	445		490	445		505	460
350	377			490			490	445		505	460
400	406			540	495	16-22	540	495	16-22	565	515	16-22
400	426			540		16-22	540	495	16-22	565	515	16-22
450	457			595	550	16-22	595	550	16-22	615	565	16-26
450	480			595		16-22	595	550	16-22	615	565	16-26
500	508			645	600	20-22	645	600	20-22	670	620	20-26
500	530			645		20-22	645	600	20-22	670	620	20-26
600	610			755	705	20-26	100	705	20-26	780	725	20-30
600	630			755		20-26	100	705	20-26	780	725	20-30
700	720			860	810	24-26	860	810	24-26	895	840	24-30
800	820	220	225	975	920	24-30	975	920	24-30	1015	950	24-33
900	920			1075	1020	24-30	1075	1020	24-30	1115	1015	28-33
1000	1020			1175	1120	28-30	1175	1120	28-30	1230	1160	28-36
1200	1220			1375	1320	32-30	1405	1340	32-33	1455	1380	32-40
1400	1420		270	1575	1520	36-30	1630	1560	36-36	1675	1590	36-42
1600	1620			1790	1730	40-30	1830	1760	40-36	1915	1820	40-48
1800	1820			1990	1930	44-30	2045	1970	44-40	2115	2020	44-48
2000	2020			2190	2130	48-30	2265	2180	48-42	2325	2230	48-48
2200	2220		275	2405	2340	52-33	2475	2390	52-42	2550	2440	52-56
2400	2420		275	2605	2540	56-33	2685	2600	56-42	2760	2650	60-56
2600	2620	240	300	2805	2740	60-33	290S	2810	60-48	2960	2850	60-56
2800	2820			3030	2960	64-36	3115	3020	64-48	3180	3070	64-56
3000	3020			3230	3160	68-36	3315	3220	68-48	3405	3290	68-60
3200	3220			3430	3360	72-36	3525	3430	72-48
3400	3420			3630	3560	76-36	3735	3640	76-48
3600	3620			3840	3770	80-36	3970	3860	80-56
3800	3820			4045	3970	80-39
4000	4020			4245	4170	84-39
Note: This dimension complies with GB/T12465-2002 standard

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