[Eccentric Reducer] Pipeline Expansion Joint

Reducer Pipeline Expansion Joint | 2022-05-18

Eccentric Reducer Pipeline Expansion Joint Introduction

Eccentric Reducer Pipeline Expansion Joint is a product composed of inner rubber and nylon cord reinforced, rubber curved sphere, and loose sleeve which are compounded by outer rubber layer. The product has high-pressure resistance, good elasticity, large displacement compensation, obvious vibration absorption and noise reduction effect, convenient installation and maintenance, and convenient installation of metal pipelines. Drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, and other basic projects.

Eccentric reducer Pipeline Expansion Joints, also known as shock absorbers, expansion joints, pipeline shock absorbers, shock absorbers, and soft joints, are flexible connectors for metal pipes, reinforced by an inner rubber layer, nylon cord fabric, and composite outer rubber layer. It consists of a rubber sphere and a loose metal flange. Now the foreign advanced production technology is introduced, the inner layer is subjected to high pressure during the production process, the nylon cord fabric and the rubber layer are better combined, and the working pressure is higher than the ordinary flexible Pipeline Expansion Joint, and the quality is better. It is high elasticity, high air tightness, medium resistance, and weather resistance pipe joint.

Eccentric Reducer Pipeline Expansion Joint Connection Type

Flange connection
Threaded connection
Threaded pipe flange connection.

Eccentric Reducer Pipeline Expansion Joint Divided by Work Pressure

0.25MPa
0.6MPa
1.0MPa
1.6MPa
2.5MPa

Eccentric reducer Pipeline Expansion Joint Performance characteristics

1. Small size, lightweight, good elasticity, easy installation, and maintenance.
2. It can produce lateral, axial, and angular displacement during installation, and is not limited by the non-passage of the pipeline and the non-parallel flange.
3. When working, it can reduce the noise transmitted by the structure and has a strong vibration absorption ability.

Eccentric Reducer Pipeline Expansion Joint Instructions

When using Pipeline Expansion Joints for high-rise water supply, the pipeline must have fixed supports or fixed brackets, otherwise, the product should be equipped with an anti-pull-off device. The force of the fixed support or bracket must be greater than the axial force, otherwise, the anti-pull-off device should also be installed.

Applicable medium: According to different materials, it can be made into acid-resistant, alkali-resistant, corrosion-resistant, oil-resistant, heat-resistant and other varieties, suitable for a variety of media and environments.
Connection method: generally there are thread connections, flange connections, clamp connections, and so on.

Rubber Sphere Material
The rubber elbow sphere is composed of an inner rubber layer, a reinforcing layer with multiple layers of squeegee nylon cord fabric, and a rubber tube compounded by an outer rubber layer. According to different media, the rubber materials used are also different, such as natural rubber, styrene-butadiene rubber, butyl rubber, nitrile rubber, EPDM rubber, neoprene, silicone rubber, fluorine rubber, and so on. They have the functions of heat resistance, acid resistance, alkali resistance, corrosion resistance, wear resistance, and oil resistance respectively.

The specific classification of Pipeline Expansion Joints
JGD type flexible synthetic Pipeline Expansion Joint, JGD-A type flexible double ball Pipeline Expansion Joint, JGD-A1 type reinforced flexible double ball Pipeline Expansion Joint, JGD-A2 type flexible double ball wire connecting Pipeline Expansion Joint, JGD -B type elastic pipeline shock absorber (reducing joint), JGD-C type fan coil Pipeline Expansion Joint, JGD-D type rubber vibration isolation pad, WTX type flexible synthetic rubber elbow, flexible rubber eccentric reducer Joints, ZT, ZTB, ZTG damping spring isolators, HTXDJ elastic hangers, etc.

How to Install Eccentric Head of Pipeline Expansion Joint ?

It is used to prevent cavitation, and the large and small heads of the pump inlet should generally be installed flat, which is to prevent the gas phase in the pipeline from accumulating at the pump port, forming large air bubbles into the pump cavity and damaging the pump. Bottom-flat installation is only possible in one case. That is the elbow that bends upwards directly behind the big and small heads. The gas-phase cannot accumulate in this case. Pump-pipeline installation concentric reducer: There is a difference between the DN of the pump outlet and the external pipeline system. It is used for the concentric reducer, which can realize the straight connection of two pipes of different sizes, and realize the pipe fittings with reduced diameter.

The axial displacement of the eccentric reducer Pipeline Expansion Joint is the elongation or compression of the Pipeline Expansion Joint in the direction of fluid flow (ie, the direction of the central axis).
The lateral displacement of the eccentric reducer Pipeline Expansion Joint is the displacement of the Pipeline Expansion Joint in the direction perpendicular to the direction of the fluid, that is, the direction of the central axis.
The angular displacement of the eccentric reducer Pipeline Expansion Joint is the sum of the angle between the vertical centerline of the two end faces of the Pipeline Expansion Joint and the original central axis.

Eccentric Reducer Pipeline Expansion Joint Installation

Avoid contact with sharp metal instruments to avoid puncturing the rubber ball of the tube. Use elastic brackets when installing, and tighten the bolts diagonally. If the pressure of the pipeline through the Pipeline Expansion Joint is too high, use limit bolts to connect the flanges at both ends together. The connection of the inlet of the pump unit should generally be installed on the top and parallel to prevent the gas in the pipeline from accumulating at the pump port. It is forbidden to install at the limit of displacement, keep away from heat sources, and is strictly forbidden to use non-compliant product media connectors for installation;

Eccentric Reducer Pipeline Expansion Joint Maintenance

Pipeline Expansion Joints have a certain service life, and they will age over time. In terms of preservation, in addition to being placed in a cool and dry place that is not exposed to sunlight, it should also be kept away from things containing strong acids and alkalis. Regularly maintain the working environment of the fittings.