B2F (vssja-2) double flange limit expansion joint is composed of main parts such as body, sealing ring, gland and extension pipe. On the basis of the original performance of loose-sleeve expansion joint, a limit device is added, and the maximum expansion is locked by double nuts.

B2F (vssja-2) double flange limit telescopic joint is suitable for connecting with the flange on both sides. When installing, adjust the connecting length of both ends of the product, tighten the gland bolt on the diagonal in turn and adjust the limit nut, so that the pipe can freely expand and contract, lock the expansion amount, and ensure the safe operation of the pipe.

[product name]:Vssja-2 double flange limit expansion joint (B2F double flange loose sleeve limit compensation joint)

[product alias]:Double flange expansion joint, double flange limit expansion device

Product specification: dn65mm-dn3600mm

[product pressure]: 0.6-1.0mpa

[product certification]: iso9001-2015

[scope of application]: [weak acid, weak base, weak corrosion, oil, hot water, cold water, etc.]

[product material]: carbon steel, ductile iron, stainless steel.

[product color]: blue, can be customized.

[operating temperature]: -40 c to 80 c

Product advantages:

B2F (vssja-2) double flange limit expansion joint is composed of main parts such as body, sealing ring, gland and extension pipe. On the basis of the original performance of loose-sleeve expansion joint, a limit device is added, and the maximum expansion is locked by double nuts. the pipe can freely expand and contract in the allowable amount, once exceed the limit of its maximum expansion and contract amount, ensure the safe operation of the pipe, especially suitable for the connection in the pipe with vibration or certain inclination and turning.

the product is scalable and easy to install. Suitable for pipe with flanged ends. B2F(vssja-2) double flange limit expansion joint can realize the compensation of axial displacement of pipeline, and can greatly reduce the axial thrust during pipeline operation, so as to extend the service life of pipeline and protect the safe operation of the line. and installed in the pipeline line can facilitate the disassembly and maintenance of the valve, and can overcome the adverse impact of the pipeline line caused by sinkholes.

Product features:

B2F(vssja-2) double flanged release sleeve limit expansion joints are suitable for flanged connections at both ends of pipe lines. during installation, the installation length of both ends of the product and the pipe or flange should be adjusted, and the gland bolts should be tightened evenly diagonally, and then the limit nut should be adjusted, so that the pipe can be freely telescopic within the telescopic range and the telescopic amount can be locked to ensure the safe operation of the pipe. Large expansion and long service life. It is convenient to disassemble and assemble the valve, which is beneficial to the regular maintenance of the pipeline. 3 this product can effectively protect the pipeline from the adverse effects of ground subsidence. 4 excellent material, stable operation. B2F(vssja-2) double flange limit expansion joint is suitable for conveying seawater, fresh water, cold and hot water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, steam and powder with temperature no higher than 250 degrees.

Component materials:

NO	Name	Quantity	Material
1	Body	1	QT400-15,Q235A,ZG230-450,20
2	Gasket	1	NBR
3	Cover	1	QT400-15,Q235A,ZG230-450,20
4	Limited short pipe	1	Q235A,20,16Mn
5	Nut	4n	Q235A,20,1Cr18Ni9Ti
6	Long Stud	n	Q235A,35,1Cr18Ni9Ti
7	Bolt	n	Q235A,35,1Cr18Ni9Ti

Technical parameters:

Nomina iameter DN	External diameter of pipe Dw	Length		Compensation L	Flange connecting dimension
					0.6Mpa			1.0Mpa
		L	L1		D	D1	n-do	D	D1	n-do
65	76	340	105	50	160	130	4-14	185	145	4-18
80	89				190	150	4-18	200	160	8-18
100	108				210	170		220	180
	114
125	133	340	105	50	240	200	8-18	250	210	8-18
	140
150	159				265	225	8-18	285	240	8-22
	168
200	219				321	280		340	295
250	273				375	335	12-18	395	350	12-22
300	325	350	130	65	440	395	12-22	445	400
350	377				490	445		505	460	16-22
400	426				540	495	16-22	565	515	16-26
450	480				595	550		615	565	20-26
500	530				645	600	20-22	670	620
600	630				755	705	20-26	780	725	20-30
700	720				860	810	24-26	895	840	24-30
800	820	590	220	130	950	920	24-30	1015	950	24-33
900	920				1075	1020		1115	1050	28-33
1000	1020				1175	1120	32-33	1230	1160	28-36
1200	1220				1405	1340		1455	1380	32-40
1400	1420				1630	1500	36-36	1675	1590	36-42
1500	1520				1730	1660
1600	1620				1830	1760	40-36	1915	1820	40-48
1800	1820				2045	1970	44-40	2115	2020	44-48
2000	2020				2265	2180	48-42	2325	2230	48-48
2200	2220				2475	2390	52-42	2550	2440	52-56
2400	2420				2685	2600	56-42	2760	2650	60-56
2600	2620	600	240	140	2905	2810	60-48	2960	3070	64-56
2800	2820				3115	3020	64-48	3180	3290	68-60
3000	3020				3315	3220	68-48	3405
3200	3220				3525	3430	72-48
3400	3420				3735	3640	76-48
3600	3620				3970	3860	80-56
Note:the size meets standard GB/T12456-2002