Product introduction：

The VSSJA-2 double flanged limit expansion joint is composed of main components such as the body, sealing ring, gland, and expansion short pipe. On the basis of the original performance of the loose sleeve expansion joint, a limit device is added, and double nuts are used to lock the expansion amount. The VSSJA-2 (B2F) double flange limit expansion joint is suitable for connecting both sides to the flange. During installation, adjust the connection length of both ends of the product, tighten the gland bolts diagonally and evenly, and then adjust the limit nut. This allows the pipeline to expand freely, lock the expansion amount, and ensure the operation of the pipeline. It is particularly suitable for connecting in pipelines with vibration, certain slopes, and bends.

[Product name] : VSSJA-2 Double flange limit expansion joint (B2F double flange loose limit compensation joint)

[Product alias] : double flange expansion joint, double flange limit expansion device, double flange limit expansion joint, double flange limit expansion joint

[Product Specification] : DN50-DN4000

[Product pressure] : 0.6-4.0MPa

[Product Certification] : ISO9001-2008

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

[Material] : Carbon steel, ductile iron, stainless steel

[Product color] : Blue, can be adjusted according to customer requirements

[Operating temperature] : -40 degrees to 180 degrees

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Product advantage：

VSSJA-2(B2F) double flange limit expansion joint is the pipe can be freely expanded in the allowable expansion amount, once exceeds the maximum expansion amount to play the limit, to ensure the maximum operation of the pipeline, especially suitable for vibration or a certain degree of inclination and bend in the pipeline connection. The product has large expansion, convenient installation and is suitable for the pipe with two ends of the flange connection. VSSJA-2(B2F) double flange limit expansion joint can realize the compensation of pipeline axial displacement, and can greatly reduce the pipeline operation axial thrust, so as to extend the service life of the pipeline, protect the line running. And installed on the pipeline line can facilitate the disassembly and maintenance of the valve, and can overcome the bad influence of subsidence on the pipeline line.

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product feature：

VSSJA-2(B2F) double flange limit expansion joint is suitable for both ends of the pipe line flange connection. When installing, adjust the installation length between the two ends of the product and the pipe or flange, tighten the gland bolt evenly diagonally, and then adjust the limit nut, so that the pipe can be freely expanded within the scope of expansion, lock the expansion amount, and the perfect operation of the pipe.

1, large expansion, long service life.

2, convenient valve disassembly, conducive to the pipeline regular maintenance.

3, This product can effectively protect the pipeline from the adverse effects brought by subsidence.

4, excellent material, stable operation.

VSSJA-2(B2F) double flange limit expansion joint is suitable for conveying sea water, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, temperature is not higher than 250 degrees steam and granular powder and other media.

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Parts material：

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	Q235A35，1Cr18Ni9Ti
7	Bolt	n	Q235A35，1Cr18Ni9Ti

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Technical parameter：

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-Φ14	185	145	4-Φ18
80	89				190	150	4-Φ18	200	160	8-Φ18
100	108				210	170		220	180
	114
125	133	340	105	50	240	200	8-Φ18	250	210	8-Φ18
	140
150	159				265	225	8-Φ18	285	240	8-Φ22
	168
200	219				321	280		340	295
250	273				375	335	12-Φ18	395	350	12-Φ22
300	325	350	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
600	630				755	705	20-Φ26	780	725	20-Φ30
700	720				860	810	24-Φ26	895	840	24-Φ30
800	820	590	220	130	950	920	24-Φ30	1015	950	24-Φ33
900	920				1075	1020		1115	1050	28-Φ33
1000	1020				1175	1120	32-Φ33	1230	1160	28-Φ36
1200	1220				1405	1340		1455	1380	32-Φ40
1400	1420				1630	1500	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	60-Φ56
2600	2620	600	240	140	2905	2810	60-Φ48	2960	3070	64-Φ56
2800	2820				3115	3020	64-Φ48	3180	3290	68-Φ60
3000	3020				3315	3220	68-Φ48	3405
3200	3220				3525	3430	72-Φ48
3400	3420				3735	3640	76-Φ48
3600	3620				3970	3860	80-Φ56
Note: The size meets standard GB/T12456-2002. Note: The size meets standard GB/T12456-2002

Innovative production of VSSJA-2(B2F) double flange limit expansion joint is composed of body, sealing ring, gland, extension shortening pipe and other main components. On the basis of the original performance of the loose sleeve expansion joint, a limiting device is added, and double nuts are used to lock the maximum expansion quantity. The pipeline can be freely telescopic in the allowed amount of expansion, once it exceeds the maximum expansion of the limit, to ensure the maximum operation of the pipeline, especially suitable for vibration or a certain degree of inclination and bend in the pipeline connection.

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Application field：

VSSJA-2 type double flange limit expansion joint is suitable for conveying sea water, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, temperature is not higher than 250 degrees steam and granular powder and other media.

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Innovative pipeline product services：

Professional manufacturing, professional service, innovation pipeline for you to create more value!

Continuous improvement of service quality, excellence, "sincere service" is the innovation pipeline has been firmly believed in the goal.  Innovation pipeline in strict accordance with ISO9001-2000 quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales, service.  Strengthen communication with users, dedication to provide our customers with excellent products, perfect and beautiful service, innovation pipeline hereby make the following commitment:

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Product standards：

Steel telescopic products are designed, manufactured and accepted in strict accordance with Chinese GB and HG standards and American API standards. The hardness of the sealing surface shall meet the requirements stipulated by the state, and the width shall exceed the national standards.

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Instructions for purchasing innovative pipeline products:

1、 Product Material Description: Due to the possibility of scratches or dirt on the surface of materials during transportation or distribution, and the possibility of surface oxidation or insufficient aesthetics during storage, the images and physical objects may also differ. Our manufacturer will definitely make our products more aesthetically pleasing, using high-quality raw materials for production. Our manufacturer promises that our products are of high quality and affordable, and are entirely a customer's choice. If you have other models or specifications of products, you can contact our customer service online or consult us when purchasing

2. Shipping instructions: 

1. Due to the unique nature of the materials, all materials are shipped after payment by the customer, and are specially customized products for the customer. Once sold, there are no returns or exchanges for non material or quality issues! Please understand. 

2. Please provide a clear description of the specific specifications, nominal diameter, working pressure, medium to be conveyed, quantity, and required performance of the required product before shopping. The main reasons for doing so are: 

1) Ensure that the product prices quoted by the manufacturer are correct and accurate; 

2) For customers, it provides protection for their own interests and prevents them from misquoting product prices, causing economic losses for both parties and causing unpleasantness for everyone; 

3) Once the customer has made a decision and both parties sign a contract, the products produced by the manufacturer can meet the actual needs of the customer. 

3. If the customer did not provide a clear description, the seller will not assume any responsibility in the event of a dispute! Please understand!

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Reasons for choosing innovative pipelines：

Innovative water supply equipment, based on the advantages of Construction of chemical and municipal pipelines in power plants industry, focuses on "win-win cooperation" Construction of chemical and municipal pipelines in power plants VSSJA-2 double flanged limit expansion joint service provider -- Innovative water supply equipment's business philosophy can be summarized into eight words "honesty based, win-win development". Innovative water supply equipment has always implemented this concept well for both its internal employees and its external VSSJA-2 double flanged limit expansion joint partners, thus gaining long-term good business reputation and cooperative relations in the Construction of chemical and municipal pipelines in power plants field and promoting the stable development of Innovative water supply equipment.

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Pre-sale services：

Product introduction, technical exchange, non-standard product design, troubleshooting.

In sales service：

1. Maintain a trustworthy contract, ensure timely supply, and keep in touch with customers at all times. 

2. For special or complex products, our factory arranges technical personnel to provide training and guidance to users on product use, troubleshooting, adjustment, and maintenance.

after-sale service：

1. The warranty period for innovative pipeline products is 12 months from the factory, and the "three guarantees" service (product quality issues) is implemented. 

2. Our factory regularly organizes technical and inspection personnel to visit our products during use, seeking feedback from users on product quality, usage status, improvement opinions, and other aspects, in order to further improve product quality. 

3.Quickly respond to customer complaints about product quality issues 

4. For after-sales service, users are required to fill out the quality feedback form after the service and provide appraisal opinions, in order to jointly improve the product and service quality of the innovation pipeline.