Can GALVOIL L Hose for Transmission, Fuel, and Diesel Oil handle diesel and coolant simultaneously under its specified temperature and pressure limits?

GALVOIL L Hose for Transmission, Fuel, and Diesel Oil Format — short answer: No, not safely for simultaneous diesel and coolant flow. Explanation: The hose’s specified maximum fluid temperatures differ by medium: diesel is rated up to +80°C, while ethylene glycol–based coolants (and water) are rated up to +90°C. These ratings reflect material compatibility and performance limits of the NBR inner layer and reinforcement. Running diesel and coolant simultaneously could expose the hose to mixed-fluid chemistry and local temperatures that exceed the lower diesel limit (+80°C), risking accelerated degradation, swelling or embrittlement of the inner rubber, and potential failure. Additionally, the hose’s working pressure (20–25 bar depending on diameter) may be acceptable, but pressure compatibility alone does not guarantee chemical/material compatibility for mixed-service use. Recommendation: Use the hose only for one approved medium per the specified limits (diesel up to +80°C; coolant up to +90°C). For combined or return lines carrying both diesel and coolant, select a hose explicitly rated and approved for dual-service (fuel + coolant) or consult the manufacturer/technical datasheet for verified mixed-fluid compatibility.

Can GALVOIL L Hose for Transmission, Fuel, and Diesel Oil be used simultaneously for diesel fuel and ethylene glycol-based coolant without exceeding its specified temperature and pressure limits?

GALVOIL L Hose for Transmission, Fuel, and Diesel Oil: No — you should not use the hose simultaneously for diesel fuel and an ethylene glycol–based coolant if doing so would expose the hose to conditions exceeding the lower of the two media limits at any point in the system. The hose’s rated temperature limits are media-specific: up to +80°C for diesel and up to +90°C for water or ethylene glycol–based coolants. If both fluids remain within the common safe envelope (i.e., do not exceed +80°C) and system pressure stays within the hose’s working pressure (20–25 bar depending on diameter), the material and construction are compatible. However, mixing media in service can create local temperature, chemical, contamination or compatibility issues (cross-contamination, accelerated ageing of the NBR inner layer, seals/fittings compatibility) and may require additional precautions: separate circuits, reliable fittings, appropriate sealing materials, routine inspection and ensuring max temperature never exceeds the diesel limit (+80°C). If any part of the system can reach >80°C, do not run diesel and ethylene glycol through the same hose.

GALVOIL L Hose for Transmission, Fuel, and Diesel Oil

All products, Oil and petroleum hoses/

Additional information

Material	NBR – nitrile rubber
Maximum operating temperature [°C]	90
Minimum operating temperature [°C]	-35
Vacuum resistance	no
Standard length [m]	100, 20, 60

This reinforced rubber hose with galvanized steel braid ensures exceptional resistance to high pressure, making it an ideal solution for oil installations in compact vehicles, fuel distribution systems, and a wide range of industrial machinery. Engineered for use with gasoline and petroleum-based oils such as gear oil, heating oil, or diesel, it combines durability with flexibility thanks to its smooth black NBR inner layer and robust steel wire reinforcement. The hose maintains excellent softness and handling ease while delivering reliable performance across demanding conditions. Its operating parameters are tailored to different media: up to +40°C for gasoline and fuels with aromatic hydrocarbons, +80°C for diesel, air, and non-oxidizing detergents, and up to +90°C for water or ethylene glycol-based coolants. With a working pressure range of 20 to 25 bar, depending on diameter, and a broad temperature tolerance from -35°C to +90°C, this hose guarantees safety, efficiency, and long-lasting performance in both automotive and industrial applications.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
SL-GALVOIL-L-04	GALVOIL/L hose 4.5x9.5 mm	5	25
SL-GALVOIL-L-06	GALVOIL hose/L 6x11 mm	6	25
SL-GALVOIL-L-08	GALVOIL hose/L 8x13 mm	8	25
SL-GALVOIL-L-10	GALVOIL hose/L 10x15 mm	10	25
SL-GALVOIL-L-13	GALVOIL hose/L 13x19 mm	12	20
SL-GALVOIL-L-16	GALVOIL hose/L 16x22 mm	16	20

This reinforced rubber hose with galvanized steel braid ensures exceptional resistance to high pressure, making it an ideal solution for oil installations in compact vehicles, fuel distribution systems, and a wide range of industrial machinery. Engineered for use with gasoline and petroleum-based oils such as gear oil, heating oil, or diesel, it combines durability with flexibility thanks to its smooth black NBR inner layer and robust steel wire reinforcement. The hose maintains excellent softness and handling ease while delivering reliable performance across demanding conditions. Its operating parameters are tailored to different media: up to +40°C for gasoline and fuels with aromatic hydrocarbons, +80°C for diesel, air, and non-oxidizing detergents, and up to +90°C for water or ethylene glycol-based coolants. With a working pressure range of 20 to 25 bar, depending on diameter, and a broad temperature tolerance from -35°C to +90°C, this hose guarantees safety, efficiency, and long-lasting performance in both automotive and industrial applications.

Additional information

Material	NBR – nitrile rubber
Maximum operating temperature [°C]	90
Minimum operating temperature [°C]	-35
Vacuum resistance	no
Standard length [m]	100, 20, 60