Marine generator coolant hoses are durable, flexible tubes that circulate coolant between the engine and heat exchanger. The cooling system regulates engine temperature by transferring excess heat via coolant flow. Proper maintenance ensures efficient operation and prevents overheating in marine environments.

Marine Generator Coolant Hoses:

Size: 0.5" to 2" inner diameter (ID), varying lengths

Grade: SAE J20 R3, R4, or R5 for coolant applications

Viscosity: Compatible with ethylene glycol/propylene glycol-based coolants (10-60°C operating range)

Buoyancy: Typically non-buoyant (synthetic rubber construction)

Material: EPDM (Ethylene Propylene Diene Monomer) or reinforced silicone rubber

Temperature Range: -40°C to +150°C (short peaks up to 170°C)

Pressure Rating: 50-150 psi (depending on reinforcement)

Marine Cooling Systems:

Coolant Type: Ethylene glycol/water mix (50/50) or propylene glycol for eco-sensitive zones

Flow Rate: 10-100 GPM (varies by generator size)

Heat Dissipation: 5,000-50,000 BTU/hr (model-dependent)

Material: Brass, copper-nickel, or marine-grade aluminum components

Corrosion Resistance: ASTM B111/B543 compliant for seawater exposure

System Pressure: 15-30 psi (closed-loop systems)

Hose Clamps: 316 stainless steel band-type (AWWA C306 compliant)