Large Diameter Flexible Water Suction Hose

The JIDONGDA Large Diameter Flexible Water Suction Hose is an industrial water transfer hose specifically designed for high-flow water intake systems operating under negative pressure (suction). By combining a highly elastic body with a spiral reinforcement framework, the hose maintains its cross-sectional shape during prolonged vacuum operation, completely eliminating flattening or deformation. Compared to traditional rigid piping, this product is lightweight, easy to install, and adaptable to complex terrain. Suitable for a wide range of water intake applications from natural and industrial sources, it is a vital component in systems for municipal floodwater pumping, agricultural irrigation, industrial water circulation, emergency water supply, and infrastructure drainage.

Product Construction

1. High-flow suction inner layer

Made from smooth, hydrolysis-resistant rubber; this layer significantly reduces flow resistance, enhances water intake and transport efficiency, and minimizes pump load losses.

2. Elastic reinforcement and load-bearing layer

Utilizes cross-wound layers of high-strength cord, effectively increasing tensile strength and tear resistance while bolstering overall structural stability.

3. Spiral framework and anti-collapse structure

Features an integrated internal steel spiral framework—a key element that ensures resistance to negative pressure and prevents the hose from flattening or deforming during suction operations.

4. Weather-resistant outer layer

Resistant to UV radiation, aging, and abrasion, as well as high temperatures and humidity; It is designed for long-term outdoor use and is highly adaptable to environmental conditions.

Key Application Areas

1. Water supply projects: water intake from rivers, lakes, and reservoirs; long-distance water transport.

2. Municipal drainage systems: urban floodwater pumping; flood control during rainy seasons; emergency drainage in low-lying areas.

3. Agricultural irrigation: water intake from irrigation canals; water supply for large-scale irrigation.

4. Industrial circulation systems: cooling water intake for facilities; process water circulation and transport.

5. Emergency water supply: water transfer for drought relief; temporary water intake for firefighting; emergency supply during natural disasters.

6. Construction: temporary water supply for construction sites; dewatering of excavation pits; construction wastewater drainage.

Key Product Characteristics

1. High flexibility and adaptability: bendable and foldable; adapts to complex terrain and non-standard routing.

2. Stable suction flow: spiral reinforcement ensures stable pumping and high flow rates under negative pressure.

3. Lightweight and easy to install: lighter than rigid piping; convenient to transport, lay, assemble, and disassemble.

4. Resistance to negative pressure deformation: effectively withstands suction forces; prevents pipe collapse or blockage.

5. Weather resistance and durability: resistant to aging, sunlight, and abrasion; suitable for long-term outdoor use.

6. Low maintenance costs: robust construction and long service life; significant reduction in replacement and operating costs.

Customization Options

JIDONGDA offers tailored solutions for diverse operating conditions, including options with wear-resistant polyurethane (PU) coating, seawater-compatible designs, cold-resistant versions (down to -40°C), heat-resistant reinforced structures, anti-static models, and food-grade hoses. The products also support ANSI/DIN/JIS standard flange connections and quick-connect systems for integration with various types of equipment.

Key Product Advantages

1. Specially designed for high-volume fluid transfer in suction (negative pressure) mode; a highly specialized design ensuring stable performance characteristics.

2. An optimal balance of flexibility and high strength: easy to bend and lay, yet highly resistant to tension and deformation.

3. Versatile application: compatible with fresh water, river water, seawater, industrial process water, and other media.

4. Ease of installation and operational efficiency: significantly reduces project timelines and labor costs.

5. Customizable manufacturing to meet specific requirements for large- and medium-scale water management and municipal infrastructure projects.

6. Proven track record of successful use in water management and municipal projects worldwide; strong market reputation.

Practical Application Examples

Example 1: Urban Flood Emergency Drainage Project (Central China)

During the flood season in a city in Central China, heavy rains caused large volumes of water to accumulate in low-lying areas; standard piping systems were unable to drain the water quickly enough. The project utilized JIDONGDA hoses (DN300 diameter) in conjunction with high-capacity mobile pumping stations. Thanks to their high flexibility, the hoses could be routed along slopes and winding paths without the need for additional elbows or angled fittings. An internal spiral reinforcement prevented flattening during prolonged suction operations (negative pressure), ensuring high daily throughput and stable performance. The entire area was drained in just three days; despite extended outdoor use, the hoses showed no signs of wear or damage, confirming the successful completion of the flood mitigation task.

Example 2: Floating Barge Water Intake and Supply Project at a Reservoir in Sichuan Province

During the implementation of a floating barge pumping station project at a reservoir in Sichuan, fluctuating water levels and barge movement posed risks: traditional rigid pipes were prone to fracturing, while standard soft hoses were susceptible to flattening (deformation) under vacuum conditions. The project utilized custom-made, large-diameter, corrosion-resistant flexible suction hoses from JIDONGDA. These hoses accommodate the vertical movement of the barge, withstanding tensile loads and fatigue stress without losing their seal or suffering permanent deformation. The smooth inner surface minimizes flow losses, effectively enhancing the pumping station's performance. The equipment has been operating continuously and stably for two years without failure, ensuring a reliable and uninterrupted water supply to the urban area.

Frequently Asked Questions

Question 1: Will JIDONGDA Large Diameter Flexible Water Suction Hose become flattened or deformed when operated under full vacuum (negative pressure) for a long time?

Answer 1: No, that won't happen. The product has a built-in continuous helical steel wire frame combined with multiple layers of fiber reinforcement and undergoes strict negative pressure testing before leaving the factory. Under nominal operating conditions, the hose retains its round shape without flattening or undergoing irreversible deformation, which allows its use in long-term continuous operation and ensures stable operation of pumping equipment.

Question 2: Is this Large Diameter Flexible Water Suction Hose suitable for special operating conditions such as seawater, low temperatures or drinking water?

Answer 2: Yes. We offer tailored solutions for various scenarios: seawater resistant structures for coastal water intakes; low-temperature versions (up to -40°C) for use in cold conditions; as well as food grade materials for drinking water supply systems and the food industry. We also offer the manufacture of products with special characteristics: increased resistance to abrasion and high temperatures, antistatic properties, as well as with various types of connecting fittings.

Question 3: What are the advantages of flexible suction hoses over traditional rigid piping in terms of overall project costs?

Answer 3: The benefits are significant. Firstly, the low weight of the products eliminates the need to use heavy lifting equipment, which significantly reduces transportation and labor costs. Secondly, high flexibility allows pipelines to be laid along complex routes without the use of a large number of elbows and corner fittings. Thirdly, they do not require the creation of permanent infrastructure, which makes them an ideal solution for temporary or mobile projects. Fourth, weathering and corrosion resistance provides much lower long-term maintenance costs compared to steel pipes, which can reduce overall project costs by 40–60%.