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
Product Name | Phosphoric Acid Hose |
Reinforcement | Multi Plies High Strength Synthetic Fabric |
Cover | Epdm Resistant to Chemical, Weathering and Ozone, Blue, Green
Wrapped |
Size | 3/4"-6" or Customized Size |
Certification | IS09001 |
Temperature Range | -40°C to 120°C |
Working Pressure | 10-16 bar |
Length | According to Customer Demand, It is Generally 60 Meters |
Application | Desigued for In-Plant or Tank Truck Use to Transfer Chemicals and
Solvents |
Features | Chemical Resistance, Good Pressure Resistance and Good Stability |
| Model | Inner Diameter (mm) | Outer Diameter (mm) | Working Pressure (bar) | Burst Pressure (bar) | Bend Radius (mm) | Max Temp (°C) | Min Temp (°C) | Length per Roll (m) |
|---|
| HM-PAH1 | 25 | 38 | 10 | 30 | 150 | 80 | -20 | 20 |
| HM-PAH2 | 32 | 46 | 10 | 30 | 180 | 80 | -20 | 20 |
| HM-PAH3 | 38 | 54 | 10 | 30 | 210 | 80 | -20 | 20 |
| HM-PAH4 | 50 | 68 | 10 | 30 | 280 | 80 | -20 | 20 |
| HM-PAH5 | 65 | 85 | 10 | 30 | 350 | 80 | -20 | 20 |
| HM-PAH6 | 75 | 97 | 10 | 30 | 400 | 80 | -20 | 20 |
| HM-PAH7 | 90 | 112 | 10 | 30 | 480 | 80 | -20 | 20 |
| HM-PAH8 | 100 | 125 | 10 | 30 | 550 | 80 | -20 | 20 |
| HM-PAH9 | 125 | 155 | 10 | 30 | 700 | 80 | -20 | 20 |
| HM-PAH10 | 150 | 185 | 10 | 30 | 850 | 80 | -20 | 20 |
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.
