Hydraulic HouseHoses & FittingsPARKER

PARKER 4SH Hydraulic Hose

Parker 4SH hydraulic hose is distinguished by exceptional strength, high impulse resistance, and reliability under extremely high-pressure conditions. These EN 856 Type 4SH compliant multi-spiral hoses are designed for heavy equipment that is constantly exposed to pressure fluctuations, vibration, and heavy loads.

  • Extreme pressure resistance four layers of high-strength steel-wire spiral reinforcement safely handle working pressures from 3,600 to 6,000+ psi (25.0 - 42.0 MPa).
  • Impulse resistance withstands sudden pressure spikes and shocks, minimizing the risk of hose rupture.
  • Protective outer cover available with special ToughCover or SuperTough covers that protect the hose against mechanical abrasion, ozone, and harsh climatic conditions.

Key technical advantages

Extreme pressure resistance
four layers of high-strength steel-wire spiral reinforcement safely handle working pressures from 3,600 to 6,000+ psi (25.0 - 42.0 MPa).
Impulse resistance
withstands sudden pressure spikes and shocks, minimizing the risk of hose rupture.
Protective outer cover
available with special ToughCover or SuperTough covers that protect the hose against mechanical abrasion, ozone, and harsh climatic conditions.
No-Skive technology
during crimping, the outer rubber layer does not need to be skived, saving time and preventing damage to the inner tube.
Reliable Interlock fixation
in combination with ParLock Interlock fittings, it creates a strong metal-to-metal connection that fully prevents fitting movement or displacement under high pressure.
Wide compatibility
the inner synthetic rubber tube is resistant to petroleum-based hydraulic fluids, water-glycol mixtures, and biodegradable oils.
Key technical specifications
Inner tube
synthetic rubber.
Reinforcement
four spiral layers of high-strength steel wire.
Outer cover
synthetic rubber, available in standard or reinforced abrasion-resistant ToughCover protection.
Safety factor
4:1 ratio between burst pressure and working pressure.
Temperature range
Hydraulic oils
from -40°C to +100°C.
Water
maximum +85°C.
Air
maximum +70°C.
Technical data by size

Key Parameters

Part NumberSize (Dash)Inner Diameter (I.D.)Outer Diameter (O.D.)Max. Working PressureMin. Burst PressureMin. Bend RadiusWeight (kg/m)
731-12-123/4" / 19.1 mm32.0 mm42.0 MPa / 6000 psi168.0 MPa / 24000 psi280 mm1.72 kg/m
731-16-161" / 25.4 mm39.0 mm38.0 MPa / 5500 psi152.0 MPa / 22000 psi340 mm2.14 kg/m
731-20-201-1/4" / 31.8 mm45.0 mm32.0 MPa / 4700 psi130.0 MPa / 18800 psi460 mm2.96 kg/m
731-24-241-1/2" / 38.1 mm53.0 mm29.0 MPa / 4200 psi116.0 MPa / 16800 psi560 mm3.46 kg/m
731-32-322" / 50.8 mm68.0 mm25.0 MPa / 3600 psi100.0 MPa / 14400 psi700 mm5.30 kg/m
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