Large Diameter Suction and Discharge Flanged Rubber Hose

Large Diameter Suction and Discharge Flanged Rubber Hose is a type of industrial hose used for flexible transportation of large-flow media. It mainly solves the connection, displacement and suction/discharge condition adaptation between fixed pipelines and pumps, equipment or movable pipeline systems.

According to the existing product information, this series is mainly used for conveying water, seawater, slurry, mineral slurry, sand, gravel, tailings and some industrial liquids.

JIDONGDA Hose can configure products according to customers’ specifications, technical parameters, drawings or actual operating conditions.

During purchasing, it is recommended to confirm the inside diameter, length, working pressure, vacuum pressure, medium, temperature and flange standard to ensure that the hose structure matches the actual pipeline system.

Compared with ordinary hoses mainly used for positive pressure conveying, this product adds a spiral steel wire support option in the structure, which can provide support for suction and vacuum applications.

The multi-layer fabric/cord fabric reinforcement layer is used to withstand working pressure, while the inner rubber and outer rubber are selected according to the medium, temperature and operating environment.

Working Principle and Structural Combination

The Large Diameter Suction and Discharge Flanged Rubber Hose achieves media transportation through the combination of:

Inner Rubber Layer + Reinforcement Layer + Spiral Steel Wire Framework (according to model configuration) + Outer Rubber Layer + End Flanges

During discharge operation, the internal pressure is mainly supported by the reinforcement layer.

During suction or vacuum operation, the spiral steel wire framework provides circumferential support, helping reduce the risk of hose flattening and collapse.

The end flanges are used for bolted connections with pumps, valves, pipelines and other equipment.

Flange specifications can be confirmed according to the on-site pipeline standards or customer drawings, reducing installation problems caused by mismatched connection dimensions.

Product Structure Illustration

Structure: Wear-resistant Inner Rubber, Reinforcement Layer, Spiral Steel Wire Framework, Outer Rubber and Carbon Steel Flange

Main Structure Description

• Inner Rubber Layer:
Directly contacts the conveying medium. Suitable rubber materials can be selected according to media such as water, slurry, mineral slurry, sand and gravel, as well as actual operating conditions.

• Reinforced Fabric Layer:
Uses multi-layer cord fabric/fabric reinforcement structure to withstand the main pressure load.

• Spiral Steel Wire Framework:
Used for structural solutions requiring suction or vacuum conveying, providing support for the hose body.

• Outer Rubber Layer:
Provides external protection and can be selected according to aging resistance, abrasion resistance and outdoor operating conditions.

• End Flange:
Can be equipped with carbon steel or stainless steel flanges and matched according to customer standards, dimensions or drawings.

Key Advantages

Large Diameter Conveying:
Available in various large diameter specifications, suitable for large-flow media transportation. The actual available diameter range shall be confirmed according to technical requirements.

Suction and Discharge Adaptability:
According to structural configuration, it can be used for media suction, discharge or combined suction and discharge conveying.

Convenient Flange Connection:
Flanges can be configured according to common standards such as GB, DIN, ANSI, JIS, ASME and customer drawings.

Optional Wear-Resistant Solutions:
For abrasive media such as slurry, mineral slurry, sand and gravel, suitable inner rubber and reinforcement structures can be selected according to wear conditions.

Flexible Connection:
Rubber hoses provide certain bending and displacement adaptability, suitable for equipment vibration, pipeline displacement and installation deviation conditions.

Customized According to Working Conditions:
OEM and non-standard customization are available based on diameter, length, pressure, vacuum pressure, temperature, rubber material, flange specifications and color.

Technical Specifications

The following parameters are compiled from the existing product information. Since different diameters, structures, lengths and operating conditions may affect the final performance, the confirmed technical parameters/drawings shall prevail for formal purchasing.

Specification Confirmation Note:
The original product information contains two different diameter range descriptions: “DN100–DN1000” and “DN100–DN2000”, while the current parameter table lists up to DN500. To avoid inconsistent information on the website, it is recommended to confirm the final large diameter supply range according to actual production and supply capabilities before publishing.

Application Scenarios

Mining

Used for conveying mineral slurry, tailings and slurry containing particles.

For highly abrasive media, the inner rubber material and reinforcement structure should be selected according to particle size, concentration, flow rate and pressure.

Dredging

Suitable for dredging vessels, slurry pumps, mud discharge pipelines and some underwater conveying systems.

Can be used for suction and discharge of slurry, sludge, sand and other materials.

Ports & Terminals

Used in liquid or material conveying systems requiring large diameter capacity and flexible connections.

Flange specifications can be configured according to on-site connection requirements.

Sand & Gravel

Suitable for conveying sand, gravel, water-sand mixtures, mortar and other particle-containing materials.

Wear-resistant structures can be selected according to actual abrasion conditions.

Steel Industry

Can be used for industrial water, slurry, mineral slurry and some industrial media transportation.

Also suitable for flexible pipeline connections between large-scale equipment.

Construction & Engineering

According to pressure level, medium and structural configuration, it can be applied in construction equipment and engineering projects for liquid or material transportation.

Industrial Material Transfer

Suitable for industrial conveying systems such as energy, water treatment and engineering equipment.

Customized solutions are available according to media and actual operating conditions.

Selection Guide and Purchasing Confirmation

When purchasing Large Diameter Suction and Discharge Flanged Rubber Hose, it is not recommended to quote only based on inner diameter.

For suction and discharge hoses, vacuum pressure, medium abrasion, temperature and flange connection requirements will affect the final structure configuration and service performance.

• Confirm the conveying medium first:
Water, seawater, slurry, mineral slurry, tailings, sand, gravel or other industrial media.

• Confirm the working conditions:
Flow rate, working pressure, working vacuum pressure, medium temperature, medium concentration and particle size.

• Confirm installation requirements:
Inner diameter, length, bending/displacement requirements, flange standard, flange dimensions and sealing surface type.

• For high-abrasion applications such as mineral slurry, tailings and sand/gravel:
The wear-resistant inner rubber solution should be confirmed.

• For suction or vacuum conveying applications:
The vacuum pressure level should be specified, and whether a spiral steel wire framework is required should be confirmed.

• For non-standard projects:
Providing drawings, old hose samples or actual connection dimensions is recommended for technical confirmation.

Operating Precautions

· The working pressure, vacuum pressure and temperature shall not exceed the allowable range of the confirmed hose model. The specific limitations shall be subject to the product technical confirmation documents.

· When conveying abrasive media such as sand and mineral slurry, the suitable inner rubber structure should be selected according to actual wear conditions, and the hose body should be inspected regularly.

· Before flange installation, check the flange standard, bolt hole spacing, sealing surface and bolt connection dimensions to avoid forced alignment during installation.

· For suction applications, the vacuum requirement and spiral steel wire reinforcement configuration should be confirmed. If abnormal hose flattening, collapse or deformation occurs, stop using the hose and check the operating conditions.

· During installation and transportation, avoid unnecessary impact, squeezing or dragging on the flange ends to reduce damage to the connection parts and hose body.

· For special chemical media, high-temperature media or non-standard operating conditions, provide information such as medium composition and temperature before purchasing. Technical personnel shall confirm material compatibility.

Maintenance and Service Life Management

The actual service life of large diameter rubber hoses is related to the conveying medium, pressure, vacuum pressure, temperature, bending, installation condition and frequency of use.

Therefore, maintenance should focus on:

Regular Inspection + Operating Condition Records + Timely Handling of Abnormal Conditions

· Regularly check whether the outer rubber layer has cracks, abnormal wear, bulging or other visible damage.

· Check whether the flange connection area has looseness, leakage or abnormal deformation.

· Check the hose condition during suction and discharge operations, paying attention to abnormal flattening, collapse or deformation.

· For abrasive media such as mineral slurry and sand/gravel, record wear conditions according to actual usage as a reference for future selection optimization.

· When the hose is out of service, avoid long-term compression by sharp objects. During handling and storage, minimize unnecessary bending and impact.

· If abnormal pressure, obvious leakage, structural damage or abnormal connection occurs, stop using the hose and perform technical inspection.

Quality Control & Delivery

According to the existing product information, finished products can be inspected according to product specifications and customer requirements, including:

· Appearance

· Inner diameter

· Outer diameter

· Length

· Flange dimensions

· Pressure

· Vacuum / Negative pressure

· Hardness

· Rubber performance

If customers have special testing requirements, the inspection items and acceptance standards should be confirmed before ordering.

For customized products, specifications, flange requirements, pressure level, vacuum pressure, conveying medium and delivery requirements can be confirmed during the technical confirmation stage.

FAQ

1. What specifications are available for Large Diameter Suction and Discharge Rubber Hose?

The current parameter information lists common inner diameters including DN100, DN150, DN200, DN250, DN300, DN400 and DN500 mm. Larger sizes can be technically confirmed according to project requirements.

2. Can flanges be installed on the hose?

Yes. The product uses flange connections and can be equipped according to GB, DIN, ANSI, JIS, ASME standards or customer drawings.

3. Can it be used for mineral slurry and tailings transportation?

Yes. According to slurry concentration, particle size, flow rate, pressure and temperature, suitable wear-resistant structures can be selected. The final solution shall be confirmed according to actual operating conditions.

4. Can it be used for dredging projects?

Yes. The hose can be selected according to the medium, pressure, vacuum requirements and installation method of the dredging system.

5. Can it be customized according to drawings?

Yes. Customers can provide drawings, samples or detailed technical parameters for confirming the hose body and flange structure.

6. What is the MOQ?

MOQ depends on product type, specification, length and customization requirements.

Standard products can support small-batch purchasing. The specific quantity shall be confirmed during quotation.

7. Can samples be provided?

Some standard products can provide samples or sample support. Sample cost and transportation cost shall be confirmed according to the specific product and order situation.

8. What is the delivery time?

Standard products usually require 7–20 working days.

For customized products, large diameter hoses and special specifications, delivery time shall be confirmed according to structure, quantity and production requirements.

A clear delivery schedule will be provided before ordering.

9. How is quality guaranteed for bulk orders?

Quality inspections can be carried out according to product specifications and customer requirements, including appearance, dimensions, flange, pressure and vacuum testing.

Special inspection items should be confirmed before purchasing.