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 Expansion joint, expansion joint manufacturer, Gongyi Unicom pipeline factory
[telescopic series]
Telescopic device
SSQ cast iron expansion device
Ductile iron expansion device
CS type thermal pipeline expansion device
SF steel expansion device
RS type flexible sleeve type expansion device
Ssqp both ends flange limit pressure plate extension
Sqx-a casing expansion joint
Sqx-b casing expansion joint
Sqx-c casing expansion joint
[transmission joint series]
Force transfer joint
Vssjafg single flange loose sleeve force transfer connection
Vssjaf double flange loose sleeve force transfer connection
Vssjafc detachable double flange loose sleeve transmission
CF type single flange loose sleeve force transfer joint
C2F double flange loose sleeve force transfer joint
Cc2f detachable double flange loose sleeve transmission
Beijing force transfer joint
Shanghai force transfer joint
Tianjin transfer joint
[waterproof casing series]
Waterproof casing
Stainless steel waterproof casing
Type a rigid waterproof casing
Type B rigid waterproof casing
C-type rigid waterproof casing
02s404 rigid waterproof casing
02s404 flexible waterproof casing
07fs02 rigid closed casing
07fs02 flexible sealing sleeve
Special airtight casing for civil air defense basement
[compensator series]
Compensator
TWB / ztwb oil injected DC medium
Silicone skin of nonmetal compensator
Jr type general purpose metal hose
stainless steel bellows
QB type spherical compensator
Directly buried corrugated compensator
Axial inward pressure bellows expansion joint
Bellows expansion joint with axial compression
Bellows expansion joint of transverse small tie rod
[rubber joint series]
Rubber joint
Jgd single ball flexible rubber joint
Jgd double ball flexible rubber joint
KXT single ball flexible rubber joint
KXT double ball flexible rubber joint
Gjq (x) - SF double sphere flexible rubber
Gjq (x) - DF - II single sphere is flexible
Anti pull off flexible rubber joint
Jgd-b flexible double ball wire connecting rubber
Fan coil connection
[cold rolled flange series]
Cold rolled flange
[expansion joint series]
Double flange limit expansion joint
Vssja-1 single flange limited expansion joint
B2F double flange loose sleeve limited expansion joint
BF single flange loose sleeve limited expansion joint
Ay type gland type loose sleeve expansion joint
Ssjb-3 (by) gland type loose sleeve limit
Ssjb-2 (by) gland type loose sleeve limit
Welded expansion joint
Ssjb (Ay) gland type loose sleeve expansion and contraction
Gfjh double flange steel multiple joint
Rubber joint series

Jgd-b rubber reducing joint

Jgd-b rubber reducing joint (big and small head), also known as reducing shock absorber, pipe shock absorber, shock absorber throat, soft joint, flexible joint and high pressure joint. The rubber joint ball is composed of a rubber tube composed of an inner rubber layer, a reinforcing layer, a multi-layer scraping nylon cord fabric and an outer rubber layer. According to different media, the rubber materials used are also different, including natural rubber, styrene butadiene rubber, butyl rubber, nitrile rubber, ethylene propylene diene monomer, chloroprene rubber, silicone rubber, fluororubber, etc. It has heat resistance, acid resistance, alkali resistance, corrosion resistance, wear resistance, oil resistance and other functions.

National 24-hour sales hotline: 0371-64031268

Jgd-b rubber reducing joint (big and small head), also known as reducing shock absorber, pipe shock absorber, shock absorber throat, soft joint, flexible joint and high pressure joint. The rubber joint ball is composed of a rubber tube composed of an inner rubber layer, a reinforcing layer, a multi-layer scraping nylon cord fabric and an outer rubber layer. According to different media, the rubber materials used are also different, including natural rubber, styrene butadiene rubber, butyl rubber, nitrile rubber, ethylene propylene diene monomer, chloroprene rubber, silicone rubber, fluororubber, etc. It has heat resistance, acid resistance, alkali resistance, corrosion resistance, wear resistance, oil resistance and other functions.

Product introduction of jgd-b rubber reducing joint:
The main features of jgd-b rubber reducing joint are that it can solve the problem of different diameters when connecting metal pipes, and it has the function of shock absorption and noise reduction, which can save pipeline installation parts and cost. It is composed of inner rubber layer, nylon cord fabric reinforced rubber ball and loose metal flange. It can be widely used in water supply and drainage, circulating water, HVAC, fire protection, papermaking, pharmaceutical, petrochemical, ship, water pump, compressor, fan and other pipeline systems. The common type is used to transport air, compressed air, water, sea water, oil, acid, alkali, etc. from - 15 ℃ to 120 ℃. The special type is used to transport the above medium or oil, concentrated acid and alkali, solid materials above - 30 ℃ ~ 250 ℃.

Installation method of jgd-b rubber reducing joint:
1. It is strictly forbidden to exceed the displacement limit when installing the flexible rubber joint.
2. The installation bolts should be symmetrical and gradually pressurized and tightened to prevent local leakage.
3. To prevent the rubber joint from pulling off when it is installed.
4. Rubber joint should be far away from heat source and ozone area. Strong radiation light is strictly prohibited. Exposure to the sun and the use of media that do not meet the requirements of this product.
5. During transportation, loading, unloading and installation of rubber joint, it is strictly forbidden to cut the surface sealing surface with sharp instruments.
6. Please use special flange or small diameter flange for butterfly valve when installing products above DN200 mm, so as to avoid flange pulling off, water leakage and water seepage after installation.


Use and installation of jgd-b rubber reducing joint:
1. Flexible rubber joint pipe construction, it must be in a natural state, do not artificially in the installation of products produce artificial deformation. When the pipeline medium is acid and alkali resistant, oil resistant, high temperature and other special materials, the joint with a gear higher than the pipeline working pressure should be selected.
2. The flange connecting rubber joint shall be valve flange or flange conforming to GB / t9115.1 (RF).
3. The normal applicable medium of flexible rubber joint is ordinary water with temperature of 0-60 ° C. In case of special medium such as oil, acid and alkali, high temperature and other corrosive and hard materials, rubber joint with corresponding special resistance shall be selected, and it is not allowed to be used in series or in general.
4. When the flexible rubber joint is used at the inlet and outlet of the water pump, it should be located at the side of the water spring, and the metal reducing joint should be installed between the water spring and the water spring, and it should be installed at the large diameter source of the variable diameter.
5. When the pipeline displacement is greater than or equal to the maximum compensation of the joint, the number of joints should be increased to parallel the displacement. It is strictly forbidden to make the joint in the limit deflection displacement and deviation state in order to adjust the pipeline out of tolerance, let alone exceed the limit (expansion, displacement, deflection, etc.), see the table below for the specific installation data.
6. For high-rise water supply or suspended water supply, the pipeline shall be fixed on the hanger, bracket or anchor frame, and the joint shall not bear the weight and axial force of the pipe itself, otherwise the joint shall be equipped with anti pulling device (the bearing force must be greater than the axial force of the pipeline).
7. When installing the rubber joint, the screw of the bolt should extend to the outside of the joint, and the bolt of each flange end face should be repeatedly and evenly tightened according to the method of diagonal pressure to prevent pressure deviation. Screw joint should be tightened evenly with standard spanner. Do not use force applying stem to make movable joint slip, slide edge and fracture. Moreover, regular inspection should be carried out to avoid looseness causing disc detachment or water seepage.
8. After the rubber flexible joint is subjected to pressure for the first time (such as installation and pressure test) or before it is put into use again after long-term shutdown, the bolts shall be re pressurized and tightened before putting into operation.
9. When using or storing rubber flexible joint, avoid high temperature, ozone oil and acid-base environment. Sunshade frame shall be built for outdoor or sunny and windward pipes. It is strictly prohibited to have any storm, rain or wind turbidity. It is forbidden to brush paint and wrap thermal insulation material on the surface of joint. Rubber products should be replaced timely due to aging problems.

Technical parameters:

Nominal length of reducer, jgd

DN large ×DN Small
(mm)
Length L (mm)
Axial displacement (mm)
Lateral deflection (mm)
Angular displacement (a one +a two )
remarks
elongation
compress
80×50
one hundred and eighty
twenty
thirty
forty-five
35°
According to s311 national standard for water supply and drainage
100×80
one hundred and eighty
twenty
thirty
forty-five
35°
150×80
one hundred and ninety
twenty
thirty
forty-five
35°
150×100
two hundred
twenty-two
thirty
forty-five
35°
200×100
two hundred
twenty-two
thirty
forty-five
35°
200×150
two hundred
twenty-two
thirty
forty
35°
250×200
two hundred and twenty
twenty-five
thirty-five
forty
30°
300×200
two hundred and twenty
twenty-five
thirty-five
forty
30°
300×250
two hundred and twenty
twenty-five
thirty-five
forty
30°
350×200
two hundred and twenty
twenty-five
thirty-five
forty
30°
350×300
two hundred and twenty
twenty-five
thirty-eight
thirty-five
30°
400×350
two hundred and twenty
twenty-five
thirty-eight
thirty-five
30°
500×400
two hundred and thirty
twenty-eight
thirty-eight
thirty-five
26°
600×400
two hundred and forty
twenty-eight
thirty-eight
thirty-five
26°
600×500
two hundred and forty
twenty-eight
thirty-eight
thirty-five
26°

Company name: Gongyi Unicom pipeline factory address: Xicun Industrial Zone, Gongyi City, Henan Province contact person: Manager Pang Tel: 0371-64031268
Mobile phone: 15617617287 / 15038001853 Fax: 0371-64031728 e_ mail:gyltgd@126.com Yu ICP Bei No. 12019710-5
Professional expansion joint, expansion joint, expansion joint, pipe expansion, limit expansion joint manufacturer Copyright: Gongyi Unicom pipeline factory