📐 Hose Size Calculator
💧 Flow-Based Hose Selection
Recommended Hose Specifications
Minimum Hose ID: -
SAE Dash Size: -
Hose Working Pressure: -
Typical Hose Series: -
📋 SAE Hose Size Reference Chart
| SAE Dash Size | Hose ID (in) | Hose ID (mm) | Typical Max Flow (LPM) | Working Pressure (Bar) | Application |
|---|---|---|---|---|---|
| -4 | 0.25 | 6.35 | 8 | 280 | Pressure line, small cylinders |
| -6 | 0.375 | 9.53 | 15 | 250 | Medium pressure |
| -8 | 0.50 | 12.70 | 30 | 225 | General purpose |
| -10 | 0.625 | 15.88 | 50 | 210 | General purpose, pumps |
| -12 | 0.75 | 19.05 | 80 | 200 | Medium flow |
| -16 | 1.00 | 25.40 | 120 | 180 | High flow systems |
| -20 | 1.25 | 31.75 | 180 | 160 | High flow |
| -24 | 1.50 | 38.10 | 250 | 140 | Large systems |
| -32 | 2.00 | 50.80 | 400 | 100 | Suction lines |
🎯 Velocity Guidelines
| Line Type | Maximum Velocity (m/s) | Maximum Velocity (ft/s) | Notes |
|---|---|---|---|
| Suction Line | 1.2 m/s | 4 ft/s | Keep low to avoid cavitation |
| Return Line | 3.0 m/s | 10 ft/s | Moderate, avoid turbulence |
| Pressure Line | 5.0 m/s | 16 ft/s | General pressure circuits |
| High Pressure | 8.0 m/s | 26 ft/s | High pressure systems only |
🔍 Hose Selection by Application
🚜 Construction Machinery
- Standard: SAE 100R1, SAE 100R2
- High Pressure: SAE 100R13, SAE 100R15
- Suction Lines: SAE 100R4
- Tropical Note: Use heat-resistant covers
🏭 Industrial Systems
- General Purpose: SAE 100R1, EN 853
- High Pressure: SAE 100R12
- Suction: SAE 100R4
- Tropical Note: Consider longer hose life - reduce service intervals by 30%
⚠️ Hose Safety Guidelines
Important Safety Rules
- Pressure Rating: Always select hose rated for at least system working pressure
- Burst Pressure: Must be at least 4:1 safety factor
- Bend Radius: Never bend below minimum bend radius
- Twist: Never twist a hose during installation
- Abrasion: Use protective sleeves or clamps where needed
- Age: Replace hoses before they fail - check manufacturers shelf life
🔧 Hose Installation Tips
- Measure and cut hoses to correct length - allow for pressure expansion
- Use clean, sharp hose cutter - no jagged edges
- Clean hose interior to remove debris before installation
- Use correct crimp fitting and crimp dimensions
- Test pressure to 125% of working pressure before putting into service
- Route hoses to minimize flexing and abrasion
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💬 Contact Engineering 📱 WhatsApp SupportLast updated: May 2, 2026 | Hose Size Selector by Haichen Hydraulic