Chemical Hose Wide Chemical Compatibility High Pressure Strength Long Service

Product Specification

Chemical Hose Wide Chemical Compatibility High Pressure Strength Long Service Life

Description

Efficient, safe, and continuous transfer of phosphoric acid in industrial environments requires hoses engineered for exceptional chemical resistance, mechanical stability, and operational flexibility. Hongruntong Marine Phosphoric Acid Hoses are designed to address these challenges through a combination of high-performance elastomer compounds, robust reinforcement layers, and precision-engineered bore geometry. The hoses incorporate a proprietary rubber blend formulated for long-term stability in contact with high-concentration orthophosphoric acid, maintaining flexibility and integrity over extended periods of exposure to corrosive fluids and varying temperatures. Multi-layer reinforcement ensures that the hose withstands repeated pressure cycles, suction operations, and mechanical stress caused by bending or tension during transfer processes.

The hose is covered with a UV-resistant and abrasion-tolerant outer layer to endure rough handling in industrial plants, coastal terminals, and chemical transfer networks. Its engineered inner surface minimizes friction losses and prevents stagnation zones, reducing the risk of crystallization and ensuring uniform flow throughout the transfer line. These features combine to deliver superior performance in high-stakes industrial and marine environments where hose failure can result in contamination, operational delays, and safety risks.

Case Study: Inland Chemical Plant – Continuous Recirculation Application

An inland fertilizer production facility in Eastern Europe faced recurring issues during continuous recirculation of phosphoric acid between storage tanks and neutralization reactors. The previous hoses were prone to premature wear and internal degradation due to constant exposure to hot, concentrated acid (~70% concentration) and repetitive flexing from pump-induced flow. Regular replacements were costly and caused production interruptions. The plant required a hose solution that would maintain structural integrity during both static and dynamic operations over long periods.

Hongruntong Marine supplied hoses specifically designed for high-temperature and high-concentration phosphoric acid recirculation. Each hose featured a multi-spiral reinforcement system with controlled adhesion layers to prevent delamination and a smooth bore to reduce crystallization risk. Custom fittings were installed to match the plant’s manifold configuration, minimizing flow restrictions and mechanical strain at connection points.

After 14 months of continuous operation, the plant reported zero internal liner degradation and improved flow consistency. The maintenance team noted reduced downtime for hose handling, fewer unplanned replacements, and higher product quality due to the absence of particulate contamination from hose wear. Flow monitoring indicated a 15% reduction in pressure drop compared to prior hoses, contributing to energy efficiency in pumping operations.

The successful implementation led to a full replacement program across the plant, where every recirculation line adopted Hongruntong Phosphoric Acid Hoses. The facility achieved measurable reductions in maintenance costs and operational interruptions, validating the importance of using a specialized hose designed for the chemical, thermal, and mechanical conditions of continuous acid recirculation.

Specifications

Key Features

High Temperature Resistant Acid Grade Inner Tube

The inner tube is constructed from a proprietary rubber compound engineered to resist chemical attack by concentrated phosphoric acid at elevated temperatures up to 80°C. Its polymer structure prevents micro-permeation, swelling, and loss of tensile properties, maintaining consistent dimensional stability. Extended immersion testing has confirmed that the tube retains elasticity and smoothness over thousands of operation cycles, reducing risks of flow blockage and liner degradation.

Reinforced Multi Ply Architecture for Pressure and Suction

The hose incorporates a multi-ply synthetic fiber reinforcement with spiral layers optimized for simultaneous pressure, vacuum, and bending stress. Each layer is bonded to minimize fiber separation and maintain hose roundness under mechanical load. This structural design prevents kinking during repeated flexing and ensures reliable suction capability, ideal for recirculation and offloading operations.

Smooth Bore Design to Prevent Crystallization

The inner bore is precision-engineered to provide a smooth, low-turbulence surface. This reduces areas where phosphoric acid could crystallize or deposit, particularly in operations involving elevated temperature or slow flow rates. Improved flow uniformity enhances pumping efficiency and reduces cleaning frequency, maintaining product purity throughout the system.

Durable Outer Cover for Industrial Handling

The hose’s outer layer is formulated for superior resistance to abrasion, UV light, ozone, and chemical splashes. It withstands rough handling, dragging, and mechanical impact typical in chemical plants, warehouses, and transfer stations. Flexibility is maintained under both low and high-temperature conditions, enabling safe manipulation and storage without compromising hose integrity.

Applications

Continuous Acid Recirculation Systems

Optimized for high-temperature and repetitive flexing operations, these hoses maintain integrity in recirculation pipelines where phosphoric acid is constantly circulated between tanks, reactors, and neutralization units. Smooth flow and chemical resistance prevent crystallization and contamination.

Fertilizer Production Feedstock Transfer

Designed for industrial-scale fertilizer manufacturing, the hoses handle concentrated phosphoric acid from storage tanks to processing units, maintaining purity and flow consistency while resisting thermal and chemical stresses.

Industrial Acid Blending and Tank Filling

Ideal for loading, blending, and offloading operations in tank farms, the hoses ensure safe, reliable transfer of concentrated phosphoric acid. The reinforced structure supports high-pressure and suction operations, minimizing operational downtime.

Why Choose Hongruntong Marine
 

Tailored Chemical Compatibility

Hongruntong Marine conducts rigorous chemical compatibility testing to ensure hose materials resist degradation and maintain performance with high-concentration phosphoric acid. Clients benefit from predictable performance and extended hose lifespan.

Engineering Support for Complex Installations

Technical teams assist in designing custom hose assemblies, selecting appropriate diameters, lengths, and reinforcement classes to suit plant layouts, reducing operational risk and improving efficiency.

Comprehensive Quality Assurance

From material selection to reinforcement bonding and final testing, each hose is inspected and verified to meet stringent specifications. Serial tracking enables full traceability and quality documentation for every hose.

Proven Performance in Industrial Environments

Hoses are used globally in fertilizer plants, chemical facilities, and bulk transfer operations. Long-term performance records demonstrate superior reliability, contamination-free operation, and cost savings versus standard hoses.

FAQ

1. Can these hoses handle hot phosphoric acid?

Yes, the hoses are designed to handle concentrations up to 85% at temperatures up to 80°C, maintaining chemical stability and mechanical integrity.

2. Are the hoses suitable for repeated flexing?

Yes, multi-ply reinforcement provides resistance to bending, suction, and pressure cycles, preventing kinking or collapse during dynamic operations.

3. What maintenance is recommended?

Regular external inspection, proper bend radius adherence, and internal flushing when necessary will ensure maximum service life. Avoid prolonged storage in direct heat or chemical spills.

4. Which end fittings are compatible?

Various fittings including stainless steel flanges, PTFE-lined couplings, and composite connectors can be factory-installed depending on operational requirements.

5. How long can the hoses be expected to last?

Lifespan depends on use conditions, concentration, and temperature, but proper operation typically achieves multiple years of reliable service with reduced replacement cycles compared to generic chemical hoses.