Gates EFG4K MegaSpiral® is a constant-pressure hydraulic hose designed for extremely high-pressure and high-impulse hydraulic applications.
The hose features four alternating layers of spiralled high-tensile steel wire, an NBR nitrile inner tube and an MSHA-approved chloroprene outer cover. It is compatible with petroleum-based hydraulic fluids and selected biodegradable hydraulic fluids, including synthetic esters, polyglycols and vegetable oils.
Available sizes include 3/8", 1/2", 5/8", 3/4", 1" and 1-1/4". According to the supplied Gates datasheet, all listed sizes have a maximum working pressure of 28 MPa / 4,000 psi, with a stated minimum burst pressure of 112 MPa / 16,000 psi.
Key Features
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Constant working pressure across the listed size range
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Four-spiral high-tensile steel-wire reinforcement
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Suitable for high-pressure and high-impulse hydraulic systems
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Flexible construction for easier routing and installation
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Tested to 1,000,000 impulse cycles under the conditions stated by Gates
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Compatible with petroleum-based and selected biodegradable hydraulic fluids
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MSHA-approved chloroprene cover
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Optional MegaTuff™ cover with enhanced abrasion resistance
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Compatible with Gates GlobalSpiral™ couplings
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Type approvals listed by Gates include DNV, GL, LR, BV, ABS and MOD
Technical Specifications
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| Product series | Gates EFG4K MegaSpiral® |
| Hose type | Constant-pressure spiral hydraulic hose |
| Working pressure | 28 MPa / 4,000 psi |
| Minimum burst pressure | 112 MPa / 16,000 psi |
| Inner tube | NBR, nitrile-based |
| Reinforcement | Four alternating layers of spiralled high-tensile steel wire |
| Outer cover | CR, chloroprene-based, MSHA approved |
| Temperature range | -40°C to +121°C |
| Coupling system | Gates GlobalSpiral™ |
| Standards | EN 856 R12, SAE 100R12, ISO 3862 R12 |
| Fluid compatibility | Petroleum-based fluids and selected biodegradable hydraulic fluids |
| Optional cover | MegaTuff™ abrasion-resistant cover |
