Pulp and Slurry Hoses
About Rendifield Pulp and Slurry Hoses
At Rendifield Mining and Industrial Piping Solutions, we manufacture high-performance mining hoses designed for handling various materials, including slurry, waste, environmental discharges, and dredging operations. These hoses are engineered for versatility and durability, making them suitable for a wide range of applications such as:
- Irrigation and general watering
- Dewatering and pump discharge
- Industrial wash-downs
- General fluid and waste discharges
Durability and Flexibility
Rendifield pulp and slurry hoses are built to be highly flexible, ensuring efficient handling of coal, copper, iron, phosphate concentrates, limestone, lead, zinc, nickel, bauxite, and oil sands. Designed to withstand suction forces, these hoses maintain structural integrity in demanding conditions.
For enhanced longevity, our large-diameter pulp and slurry hoses feature UV and weather-resistant outer covers, providing superior protection against environmental exposure.
With Rendifield’s robust and reliable hose solutions, mining and industrial operations can achieve efficiency, durability, and long-term performance in challenging conditions.
Pulp and slurry hoses physical properties and composition
Hand-built material handling hoses are traditionally composed of four key components:
Hose Liner
The liner serves as the impermeable barrier of the hose, designed to withstand physical, chemical, and thermal influences based on the application. The selection of a liner depends on:
- Material Composition: The nature of the materials being handled, including trace substances.
- Abrasive Content: Particle size and characteristics of suspended abrasive matter.
- Flow Conditions: Rate of flow, velocity, and operational temperature range.
Textile Reinforcement
The textile reinforcement determines the hose’s pressure capabilities, including working pressure, burst pressure, and safety factors. These factors must be specified by the customer or verified based on operational conditions.
- Working Pressure: Maximum allowable operating pressure (measured in kilopascals, kPa), typically 350, 700, 1000, and 1500 kPa, with some hoses rated up to 50 bar.
- Burst Pressure: The pressure at which the hose ruptures, measured in kPa.
- Safety Factor: The ratio between working pressure and burst pressure. All hoses are manufactured with a 3:1 safety factor.
Textile reinforcement materials commonly include:
- Square-woven textile fabric or uni-directional tyre-corded fabric or steel matrices.
- Application angles affect hose dimensional stability. The correct angle prevents undesired expansion or contraction when subjected to pressure.
Wire Reinforcement
A galvanised steel wire helix or hooped steel ring provides additional strength and suction capability. The diameter and pitch of the wire or ring affect performance under bi-directional differential pressures.
- Vacuum or Suction Pressure: Also known as negative pressure, measured below atmospheric pressure.
- External Armouring (Optional): A spirally applied helix wire on the outer cover prevents damage when the hose is dragged over rough surfaces.
Outer Cover
The outer cover protects the hose from premature damage and environmental factors. Selection depends on:
- Climatic Conditions: Exposure to weathering, UV radiation, and temperature extremes.
- Operational Conditions: Whether the hose is static or frequently dragged over rough terrain.
These conditions must be specified by the customer or assessed on-site to ensure optimal hose performance and longevity.
With durability, flexibility, and high-pressure resistance, Rendifield pulp and slurry hoses provide exceptional performance for demanding industrial and mining applications.
Pulp and slurry hoses applications
Rendifield’s pulp and slurry hoses are designed for versatile industrial and agricultural applications, including:
- Irrigation – Efficient water distribution for agricultural use.
- General Watering – Suitable for landscaping and commercial watering systems.
- Dewatering – Effective water removal in mining, construction, and industrial sites.
- Pump Discharge – Reliable handling of fluids in high-pressure systems.
- Industrial Wash-Downs – Ideal for cleaning machinery and work areas.
- General Discharges – Supports various fluid transfer and disposal processes.
- Welding & Construction – Provides robust performance in demanding work environments.
With high durability, flexibility, and resistance to harsh conditions, these hoses deliver long-lasting performance across multiple industries.
Pulp and slurry hoses specifications
Rendifield offers a wide range of flexible rubber hose assemblies designed to meet the demands of high-pressure and abrasive environments. Our hoses are built for durability, reliability, and superior performance in mining, industrial, and chemical applications.
Key Features:
- Flexible rubber hose assemblies capable of handling working pressures up to 50 bar.
- High-pressure, abrasion-resistant fabricated hose bends, shaped assemblies, and reducers for demanding applications.
- Short-length flanged connection hoses designed for vibration damping and system flexibility.
- High-pressure pinch valves available in textile and steel-cord reinforced constructions.
- Large-diameter dredge suction and tailings delivery hoses for efficient material transport.
- Speciality hoses tailored for chemical and oil handling applications.
- Custom-made expansion joints and spool pieces for precise system integration.
- Steel-cord reinforced oxygen lancing and water hoses designed for the steel-making industry.
With customisation options and high-performance materials, Rendifield pulp and slurry hoses provide exceptional strength, flexibility, and longevity in even the most extreme operating conditions.
Pulp and slurry hoses dimensions
Understanding hose dimensions is crucial for selecting the right fit for your application.
- Nominal Bore (NB): The internal diameter of the hose, measured in millimetres.
- Hose Length: The total measured length, either from flange face to flange face (for flanged hoses) or end to end(for unflanged hoses).
Maximum Available Hose Lengths by Size:
- 40mm – 125mm Nominal Bore: Up to 20m in length.
- 150mm – 750mm Nominal Bore: Up to 12m in length.
- 800mm – 1000mm Nominal Bore: Up to 5m in length.
Our manufacturing facility ensures precision and durability, delivering hoses tailored to meet the demands of high-performance industrial and mining applications.
Hose couplings
BUILT IN
HD 890 COUPLINGS
These couplings consist of a bead ring supported metal flange which ensures maximum integrity and high pressure capability. The hose reinforcement passes around the “D” ring and provides for easy bolt installation. The molded, rubber facing provides excellent end sealing.
Sizes available – 50 – 600 mm
Note:
Not supplied in hoses with extra heavy duty ultra thick liners.
Available in a choice of flange materials – Mild Steel, stainless steel glass filled nylon etc
EXTERNAL HOSE COUPLINGS (CLAMPS)
This external coupling system is built with high grade LM6 aluminum.
The system has outstanding high pressure holding ability up to 1000 KPa and consists of two halves with internal helix, which corresponds to the corrugations on the rubber hose.
These couplings are designed for fast simple fitting and do not require any special tools
This coupling system is re-usable and suitable for use on hard wall material handling hoses. The extent of the range available will be more fully covered when we address the hardwall material handling hose range, later in this presentation
Hose bends
Our standard range of preformed hand-built rubber hose bends is detailed in the tables below, specifying nominal bore and bend radii. Each bend is custom-built to match the application and operational requirements provided by the customer. Based on these specifications, the appropriate liner, reinforcement, cover, and hose ends are developed.
For bends outside our standard scope, we can manufacture customised solutions, provided the required formers are available or can be produced.
Key Considerations:
- “Extra Liner on Outer Arc” refers to a bend with a heavy-duty liner applied only to the outside arc, making its thickness twice that of the inner arc.
- Short radius bends cannot be supplied at angles less than 90°.
Our team ensures precision, durability, and customisation to meet the most demanding industrial applications.
(This table is best viewed on a tablet or desktop computer.)
| FORMER | I.D | RADIUS | FACE TO FACE | FACE TO FACE |
| TYPE | (mm) | (mm) | MINIMUM | MINIMUM |
| 45 DEGREES | 90 DEGREES | |||
| (mm) | (mm) | |||
| E | 50,6 | 500 | 393 | 786 |
| E | 76,2 | 294 | 231 | 462 |
| G2 | 102 | 340 | 267 | 534 |
| G3 | 102 | 610 | 479 | 958 |
| J2 | 127 | 381 | 267 | 534 |
| J4 | 127 | 889 | 698 | 1396 |
| L2 | 153 | 306 | 240 | 480 |
| L3 | 153 | 490 | 385 | 770 |
| L4 | 153 | 533 | 419 | 838 |
| L5 | 153 | 584 | 459 | 918 |
| L7 | 153 | 762 | 599 | 1197 |
| P1 | 203 | 229 | 180 | 360 |
| P2 | 203 | 457 | 359 | 718 |
| FORMER | I.D | RADIUS | FACE TO FACE | FACE TO FACE |
| TYPE | (mm) | (mm) | MINIMUM | MINIMUM |
| 45 DEGREES | 90 DEGREES | |||
| (mm) | (mm) | |||
| P3 | 203 | 650 | 511 | 1021 |
| S1 | 254 | 610 | 511 | 958 |
| S2 | 254 | 1000 | 786 | 1571 |
| S3 | 254 | 640 | 503 | 1005 |
| T1 | 305 | 521 | 409 | 818 |
| T2 | 305 | 556 | 437 | 874 |
| T3 | 305 | 1300 | 1021 | 2042 |
| T4 | 305 | 1800 | 1414 | 2828 |
| U | 356 | 457 | 359 | 718 |
| U1 | 356 | 1050 | 821 | 1650 |
| X1 | 406 | 1250 | 982 | 1964 |
| X2 | 406 | 1575 | 1237 | 2474 |
| X3 | 406 | 550 | 433 | 866 |
| Y | 457 | 1350 | 1060 | 2120 |
BEND DIMENSIONAL REQUIREMENTS – CENTRE TO FACE CALCULATIONS
- R = Radius of P3 = 650mm .
- A = Centre to Face.
- X = 1/2 Bend angle = 22° 30′ tan 1/2 bend angle from tables = 0.4142
- Centre to Face = 650 x 0.4142
- Centre to Face = 269mm
NB : In a 90° bend the radius and Centre to Face are the same dimensionally
-
Bend 2
-
bend 1
Pulp and slurry hoses features and benefits
Rendifield’s pulp and slurry hoses are engineered for high-pressure, extreme temperatures, and demanding industrial applications.
Key Features:
- High Working Pressure: Ranges from 4,000 kPa to 16,000 kPa.
- Wide Temperature Range:
- Standard Operation: -20°C to +85°C.
- Extreme Conditions: -40°C to +150°C.
- Size Availability:
- Nominal bores from 25mm to 1,000mm.
- Lengths up to 20m, depending on bore size.
- Customised Inner Liners: Designed to match specific abrasion, chemical, and temperature resistance needs.
- Flange Options: Includes T1000/3 standard, rotating, and rotating double flange designs.
Application in Slurry Pipelines
Slurry pipelines play a crucial role in mineral processing, efficiently transporting tailings from processing plants to designated disposal areas after ore extraction.
With durability, flexibility, and high-performance materials, Rendifield’s slurry hoses ensure efficient material transport, reduced downtime, and extended service life.
Frequently Asked Questions about Rubber Hoses
What is a rubber hose?
A rubber hose is a flexible tube primarily made from rubber, typically reinforced with layers such as synthetic fibers or metal wire. Designed to transport fluids, gases, or air, rubber hoses are widely used across industries for their strength, flexibility, and ability to withstand harsh environmental conditions.
What are the main applications of rubber hoses?
Rubber hoses are essential across various industries due to their durability, flexibility, and resistance to different fluids and environmental conditions. Some of the key applications include:
- Automotive – Used for fuel lines, coolant systems, and brake fluid transfer.
- Industrial – Ideal for transporting air, water, steam, chemicals, and oil.
- Agriculture – Commonly used for irrigation and general fluid transfer.
- Construction – Essential for material handling, hydraulic systems, and pneumatic tools.
- Food & Beverage – Designed for sanitary liquid transport in processing and manufacturing.
- Mining – Used for transferring slurry, water, and other heavy-duty fluids in tough conditions.
With their versatility and durability, rubber hoses provide reliable solutions for demanding applications across these industries.
What are the advantages of using a rubber hose?
- Exceptional Flexibility – Rubber hoses remain highly flexible even in challenging environments, allowing for easy manoeuvrability.
- Superior Durability – Designed to withstand abrasions, harsh weather, and environmental wear, ensuring a long service life.
- Chemical Resistance – Some rubber hoses are specifically engineered to resist oils, solvents, acids, and other harsh chemicals.
- Wide Temperature Tolerance – Capable of handling both extreme heat and cold, making them ideal for high-temperature applications.
- High Strength & Pressure Resistance – Reinforced rubber hoses can endure high pressures without bursting, ensuring reliability in demanding conditions.
What types of rubber hoses are available?
- Air & Water Hoses – Ideal for general air and water delivery in industrial and commercial applications.
- Fuel Hoses – Specially designed to safely transfer gasoline, diesel, and other fuels.
- Hydraulic Hoses – Reinforced hoses built to withstand high-pressure hydraulic systems.
- Steam Hoses – Engineered to handle extreme temperatures and pressures in steam applications.
- Chemical Hoses – Formulated for superior resistance to chemicals, acids, and solvents.
- Food-Grade Hoses – Made from sanitary rubber materials, ensuring safe transport of food and beverages.
How are rubber hoses constructed?
Rubber hoses are designed with a multi-layered construction to ensure durability, flexibility, and optimal performance for various applications. Each hose typically consists of three key layers:
- Inner Tube – The innermost layer that directly contacts the fluid or gas being transported. Made from specialised rubber compounds tailored for specific applications, ensuring chemical compatibility and resistance.
- Reinforcement Layer – A high-strength layer made from braided synthetic fibers, metal wire, or textile plies. This reinforcement provides the hose with pressure resistance and structural integrity, preventing kinks or bursts.
- Outer Layer – The protective outer cover, crafted from durable rubber. It enhances abrasion resistance, weatherproofing, and protection against environmental factors like UV exposure and chemicals.
This three-layer construction ensures that rubber hoses deliver long-lasting performance in demanding industries such as automotive, industrial, construction, and agriculture.
What is the temperature range for rubber hoses?
The temperature tolerance of rubber hoses depends on the materials used in their construction. In general, rubber hoses can withstand temperatures ranging from -40°C to 150°C (-40°F to 302°F). However, specialised hoses, such as steam hoses, are designed to handle even higher temperatures for extreme applications. Always check the specifications of the hose to ensure it meets the temperature requirements for your specific use case.
Are rubber hoses suitable for high-pressure applications?
Yes, rubber hoses—especially reinforced rubber hoses—are designed to handle high-pressure environments. Hydraulic hoses, for example, can withstand pressures of up to 6,000 psi or more, depending on their construction and intended application. The reinforcement, made from braided or spiral-wound synthetic fibers or steel wire, provides the strength needed to maintain performance under extreme pressure conditions. Always choose a hose rated for your specific pressure requirements to ensure safety and efficiency.
Can rubber hoses be used for oil or fuel transfer?
Yes, oil-resistant rubber hoses are specifically engineered for safe and efficient oil and fuel transfer. These hoses are designed to withstand exposure to petroleum-based products, making them ideal for transporting gasoline, diesel, and oil in automotive, industrial, and fuel distribution applications. Their durable construction ensures chemical resistance, flexibility, and longevity in demanding environments. Always use a hose rated for fuel and oil transfer to ensure safety and performance.
How do I maintain a rubber hose?
- Regular Inspection – Before each use, check for cracks, abrasions, or any signs of wear and tear to prevent leaks or failures.
- Proper Storage – Keep hoses in a cool, dry place, away from direct sunlight and extreme temperatures, to prevent material degradation.
- Routine Cleaning – If used for chemicals or oils, flush the interior after use to prevent contamination and buildup.
- Prevent Kinking – Avoid bending or kinking the hose, as this can cause internal damage. Use hose reels or proper supports to maintain its shape and longevity.
What are the common issues with rubber hoses?
- Regular Inspection – Before each use, check for cracks, abrasions, or any signs of wear and tear to prevent leaks or failures.
- Proper Storage – Keep hoses in a cool, dry place, away from direct sunlight and extreme temperatures, to prevent material degradation.
- Routine Cleaning – If used for chemicals or oils, flush the interior after use to prevent contamination and buildup.
- Prevent Kinking – Avoid bending or kinking the hose, as this can cause internal damage. Use hose reels or proper supports to maintain its shape and longevity.