LHSS produce a wide range of turbo-charger, heater and coolant hoses for use in rail applications. For our standard range, suitable for many engine applications, please refer to our sections on CAC and coolant hoses.
Construction
Constructed using high performance silicone and reinforcement fabrics. The number of plies will vary depending on the working pressure, bore size, and required wall thickness. A galvanised spring steel wire helix may also be added for high or low pressure applications, or where extra flexibility is required.
Flame retardant applications – LSLM (Low smoke, low toxicity) hoses
LHSS flame retardant hoses are designed to perform reliably in the demanding environment of rail or mass transit applications. Typically used in applications requiring flame-retardant properties, LSLM hoses perform as any other. However, in case of fire, it will take longer to ignite. When burning, only low smoke and low toxic fumes are emitted, after a short period, the LSLM hose will be covered with a protective layer of ash which slows and can even help prevent further burning. The materials used have been tested and meet the requirements of UL 94 V0 and BS 6853 for flammability temperature index, smoke density and toxic gas emission.
General
Leyland Hose & Silicone Turbo-charger and Inter-cooler hoses, offer the highest degree of reliability under extreme under bonnet applications. Manufactured from only the highest quality materials and UK sourced fabrics, hoses are offered from the design stage to your complete solution for turbo and inter-cooler applications. Our constructions are thoroughly tested and proven at temperatures up to 230°C on our multi-directional test rig, giving our customers confidence in the performance and reliability of Leyland Hose & Silicone CAC.
Fuel and Oil Resistance
Where fuel or oil mist is present, normal silicone material will absorb and degrade rapidly during service. LHSS offers superior, fluorosilicone lined hoses, to resist fuel, oil and diesel. Using the highest quality fluorosilicone material as a liner, our unique manufacturing process enables us to achieve an inter ply bond strength of almost double that found when tested against several competitor hoses. LHSS use only 100% fluorosilicone. However, we remain competitive due to our efficient manufacturing process, where many competitors use ‘diluted’ fluorosilicone material in order to reduce cost.
Production and Technical Options
Part marking including specific customer logo, part numbers and traceability options.
High temperature reflective sleeving, providing protection in specific vulnerable areas for example, close to turbo or exhaust systems.
Anti-abrasion sleeving. This can provide protection where a hose is likely to come in to contact with moving or, vibrating components.
Hose Clamps: LHSS recommend and can provide a range of clips, ideal for all hose clamping solutions.
Testing
Our dedicated factory is equipped with an extensive range of test equipment which allows LHSS to monitor, maintain and provide materials and product to both customer and our own unique and demanding specifications.
All products used in our hose building process, is supplied with customer certification. We carry out our own in-house testing to verify batch to batch consistency.
In addition, LHSS are able to carry out product testing. Our factory has the facilities to carry out burst pressure testing, heat ageing, vibration and flex testing and pressure cycle testing.
At Leyland Hose and Silicone, our priority is to ensure we can offer our customers a consistent and high quality silicone hose, out-performing many other hoses offered on the market today.
Construction
We design hoses to the highest standard, designed to operate under the most extreme conditions found anywhere in today's modern engines. They are manufactured using high quality silicone from world-leading suppliers. The woven and knitted meta-aramid fabric reinforcement used, is of the highest quality, supplied by leading UK manufacturers.
Our standard range are made using 3, 4 or 5 plies of fabric depending on diameter, with wall thickness and construction dependent on service conditions and flexibility required. Our materials and specification are carefully chosen, to provide a hose which offers easy fitting combined with maximum performance.
Where a high vacuum resistance is required, for example on off highway or most modern Euro 6 standard engines, hoses can be constructed with either a wire helix built within the wall or, with internal, stainless steel springs.
Reinforcement Fabric
Polyester – For ‘Cold-side’ hoses or, hoses where service temperature does not exceed 180°C.
Weight: 190gsm +/ - 17gsm
Burst pressure: 16Bar (232 psi)
Tensile strength: 75-80 Kgf
Temperature range: -50°C up to 180°C
Woven or Knitted Meta-aramid – For ‘Hot-side’ hoses or where service temperatures reach 230°C.
Temperature range: -50°C up to 230°C.
Woven meta-aramid gives higher stiffness and burst pressure when required. Specialist manufacturing techniques allow us to impart higher strength with good flexibility in both radial and axial directions when building convoluted turbo-charger hoses.