Product ID: 20455089 – Hose, Hydraulic LP (Low Pressure Hydraulic Hose)

Description:
This component is a low-pressure (LP) hydraulic hose assembly designed for the hydraulic power unit of waterjet cutting systems. It serves as a flexible conduit that transports hydraulic fluid between the hydraulic pump, control valves, reservoir tank, and the intensifier's hydraulic cylinder. The "LP" designation indicates this hose is rated for the low-pressure side of the hydraulic circuit (typically 1,500–5,000 PSI / 100–345 bar), as opposed to the ultra-high pressure water lines (60,000 PSI / 4,137 bar) used in the cutting system.

Applications:

• Used in waterjet cutting machines to convey hydraulic oil from the pump to the intensifier's hydraulic cylinder and directional control valves

• Connects the hydraulic reservoir to the pump inlet and return lines to the tank

• Suitable for the low-pressure side of hydraulic systems in waterjet intensifier pumps

• Compatible with SL-V, SL-VI, Classic series, and OEM intensifier assemblies

• Typically rated for operating pressures up to 5,000 PSI (approximately 345 bar)

Features:

• Low-Pressure Rating: Designed for the hydraulic return side, with pressure ratings typically between 1,500–5,000 PSI (100–345 bar)

• Flexible Construction: Manufactured with synthetic rubber inner tube, textile or wire braid reinforcement, and abrasion-resistant outer cover

• Corrosion-Resistant Fittings: Equipped with crimped or reusable hydraulic fittings (JIC, NPT, or ORFS thread types) to prevent hydraulic fluid leakage

• Temperature Rating: Engineered for hydraulic fluid temperatures up to 200°F (93°C) with resistance to petroleum-based hydraulic oils

• Vibration Absorption: Flexible design absorbs vibration from the hydraulic pump and intensifier cycling, protecting rigid connections from fatigue failure

Maintenance:

• Regular Visual Inspection: Inspect hydraulic hoses weekly for signs of surface cracking, abrasion, bulging, or swelling. Pay particular attention to areas where hoses rub against machine frames or other hoses 

• Leak Detection: Check all fitting connections for drips or wetness. Even small hydraulic leaks can lead to pressure loss, system contamination, and environmental hazards

• Bend Radius Compliance: Ensure hoses are not bent more tightly than the manufacturer's minimum bend radius. Sharp bends can collapse the inner tube and restrict flow, leading to pressure fluctuations 

• Abrasion Protection: Replace or install protective sleeving on hoses that contact metal edges or move against each other during pump operation

• Oil Compatibility: Use only manufacturer-recommended hydraulic fluids (ISO VG 32, 46, or 68). Incompatible fluids can degrade the hose inner tube and cause premature failure

• Replace in Sets: When one hydraulic hose shows signs of aging or failure, consider replacing all hoses of similar age to prevent unplanned downtime

• Replacement Criteria: Replace the hose assembly immediately if any of the following are detected:

• External cuts, gouges, or abrasion through the outer cover

• Bulging or blistering (indicates inner tube or reinforcement failure)

• Cracking or hardening of the rubber (sign of age or heat degradation)

• Leaking or damaged fitting ends (stripped threads, bent ferrule)

• Twisted or kinked installation

• Torque Compliance: When reinstalling, tighten fitting connections to the specific torque values listed in the equipment service manual. Over-tightening may damage threads or seals; under-tightening may cause hydraulic leaks

• Full Depressurization: Before disconnecting or replacing any hydraulic hose, fully depressurize the hydraulic system (shut off pump, cycle intensifier to bleed stored pressure), shut off the high-pressure water system, and follow lockout/tagout procedures 

• Fluid Cleanliness: When replacing a hydraulic hose, cap all open ports immediately to prevent contamination ingress. Hydraulic oil cleanliness is critical for the intensifier's hydraulic cylinder and directional valve longevity

• Storage: Store spare hydraulic hoses in a cool, dry environment away from ozone sources (electric motors, welding equipment), direct sunlight, and sharp edges