Key Standards for Procuring Marine Hydraulic Hose Assemblies

The marine hydraulic hose assembly serves as a crucial connection component within marine hydraulic systems, linking hydraulic pump stations, cylinders, deck machinery, and other equipment. Known for its flexibility and ease of installation in confined spaces, it is widely used in marine applications. Common connection types include sleeve, flange, cone seal, and flare fittings.

When procuring marine hydraulic hose assemblies, it is essential to consider several key parameters to ensure optimal performance and durability:

1. Maximum Operating Temperature

   Steel wire braided hoses: Operate reliably between -40°C and 100°C.

   Wire wound hoses: Function effectively between -40°C and 120°C.
   Within these ranges, the hose must not exhibit surface cracking or oil leakage.

2. Maximum Working Pressure
   The hose must withstand its rated pressure without leaking or failing.

3. Minimum Flow Capacity
   After extrusion molding, the internal diameter of the hose fitting must retain at least 90% of the original hose diameter to ensure sufficient flow.

4. Length Deformation Under Pressure
   The allowable length variation under maximum working pressure is as follows:

   Steel wire braided hoses: -4% to -2%

   Wire wound hoses: -2% to +2%

Understanding these technical requirements is critical for selecting reliable marine hydraulic hose assemblies that perform safely and efficiently in demanding marine environments.