MOQ: | 1 |
Price: | USD21/pcs |
Delivery Period: | 15-20 work days |
Payment Method: | T/T |
Supply Capacity: | 100-1000 |
Oil Return Pipes are specialized conduits designed to transport lubricating oil, hydraulic fluid, or refrigerant oil back to reservoirs/compressors in industrial, automotive, and HVAC systems. These pipes ensure efficient oil recycling while resisting heat, pressure surges, and fluid degradation.
✔ Leak-Free Oil Recovery – Prevents system oil loss
✔ Thermal Management – Withstands oil temperatures up to 150°C
✔ Pulsation Damping – Absorbs pressure spikes from pumps/compressors
✔ Sludge Resistance – Smooth bore prevents deposit buildup
✔ Vibration Isolation – Reduces stress on connected equipment
Parameter | Description | Technical Specifications |
---|---|---|
Material Construction | Layer composition | Inner: Oil-resistant NBR/FKM Reinforcement: 1-4 SS Braids Cover: Abrasion-resistant CR/PUR |
Size Range | Inner Diameter (ID) | Standard: 10mm–100mm (DN8–DN80) Custom: 6mm–200mm |
Pressure Rating | Max working pressure | 15–400 bar (217–5,800 psi) |
Temperature Range | Continuous operation | Standard: -40°C to +120°C High-Temp: -50°C to +150°C (FKM) |
Bend Radius | Minimum dynamic bending | 6× OD (Standard) • 4× OD (High-Flex) |
Fluid Compatibility | Supported oils | Mineral Oil • PAO • PAG • POE • HFC Refrigerants |
End Connections | Attachment interfaces | JIC 37° • NPT • BSPP • SAE O-Ring Boss • Flange |
Certifications | Industry standards | SAE J20 R7 • EN 856 4SP • ISO 1436 • API 16C |
Pulse Durability | Dynamic pressure cycles | ≥500,000 cycles @ 133% WP (ISO 6803) |
Abrasion Resistance | External wear rating | ≥100,000 strokes (ISO 6945 sandpaper test) |
Industry | Use Case | Recommended Specification | Connection Type |
---|---|---|---|
HVAC/R | Compressor oil return | ID: 12–25mm • Material: NBR+1 Braid | SAE Flange (ANSI/ASHRAE) |
Hydraulic Systems | Cylinder return lines | ID: 20–50mm • Material: FKM+2 Braids | JIC 37° |
Automotive | Turbocharger oil drainage | ID: 8–15mm • Material: HNBR+4 Braids | Push-Lock Connectors |
Industrial | Gearbox oil recovery | ID: 50–100mm • Material: CR+Spiral Wire | DIN 2353 Flanges |
Zero Leakage – Metal-bite fittings (ISO 8434-1)
Sludge Prevention – Smooth bore (Ra ≤3.2μm surface finish)
Easy Routing – 360° swivel fittings + 10:1 flexibility ratio
Longevity – 2X service life vs. rigid pipes (per DIN 73378 testing)
Safety – Fire-resistant covers (ISO 15540 flame test compliant)
Test | Standard | Requirement |
---|---|---|
Burst Pressure | ISO 1402 | ≥4× working pressure |
Oil Immersion | ASTM D471 | ≤10% volume swell after 72hrs |
Salt Spray | ASTM B117 | 720hrs ≥Rating 8 |
Impulse Fatigue | ISO 6803 | 500k cycles @ ΔP=±25% WP |
MOQ: | 1 |
Price: | USD21/pcs |
Delivery Period: | 15-20 work days |
Payment Method: | T/T |
Supply Capacity: | 100-1000 |
Oil Return Pipes are specialized conduits designed to transport lubricating oil, hydraulic fluid, or refrigerant oil back to reservoirs/compressors in industrial, automotive, and HVAC systems. These pipes ensure efficient oil recycling while resisting heat, pressure surges, and fluid degradation.
✔ Leak-Free Oil Recovery – Prevents system oil loss
✔ Thermal Management – Withstands oil temperatures up to 150°C
✔ Pulsation Damping – Absorbs pressure spikes from pumps/compressors
✔ Sludge Resistance – Smooth bore prevents deposit buildup
✔ Vibration Isolation – Reduces stress on connected equipment
Parameter | Description | Technical Specifications |
---|---|---|
Material Construction | Layer composition | Inner: Oil-resistant NBR/FKM Reinforcement: 1-4 SS Braids Cover: Abrasion-resistant CR/PUR |
Size Range | Inner Diameter (ID) | Standard: 10mm–100mm (DN8–DN80) Custom: 6mm–200mm |
Pressure Rating | Max working pressure | 15–400 bar (217–5,800 psi) |
Temperature Range | Continuous operation | Standard: -40°C to +120°C High-Temp: -50°C to +150°C (FKM) |
Bend Radius | Minimum dynamic bending | 6× OD (Standard) • 4× OD (High-Flex) |
Fluid Compatibility | Supported oils | Mineral Oil • PAO • PAG • POE • HFC Refrigerants |
End Connections | Attachment interfaces | JIC 37° • NPT • BSPP • SAE O-Ring Boss • Flange |
Certifications | Industry standards | SAE J20 R7 • EN 856 4SP • ISO 1436 • API 16C |
Pulse Durability | Dynamic pressure cycles | ≥500,000 cycles @ 133% WP (ISO 6803) |
Abrasion Resistance | External wear rating | ≥100,000 strokes (ISO 6945 sandpaper test) |
Industry | Use Case | Recommended Specification | Connection Type |
---|---|---|---|
HVAC/R | Compressor oil return | ID: 12–25mm • Material: NBR+1 Braid | SAE Flange (ANSI/ASHRAE) |
Hydraulic Systems | Cylinder return lines | ID: 20–50mm • Material: FKM+2 Braids | JIC 37° |
Automotive | Turbocharger oil drainage | ID: 8–15mm • Material: HNBR+4 Braids | Push-Lock Connectors |
Industrial | Gearbox oil recovery | ID: 50–100mm • Material: CR+Spiral Wire | DIN 2353 Flanges |
Zero Leakage – Metal-bite fittings (ISO 8434-1)
Sludge Prevention – Smooth bore (Ra ≤3.2μm surface finish)
Easy Routing – 360° swivel fittings + 10:1 flexibility ratio
Longevity – 2X service life vs. rigid pipes (per DIN 73378 testing)
Safety – Fire-resistant covers (ISO 15540 flame test compliant)
Test | Standard | Requirement |
---|---|---|
Burst Pressure | ISO 1402 | ≥4× working pressure |
Oil Immersion | ASTM D471 | ≤10% volume swell after 72hrs |
Salt Spray | ASTM B117 | 720hrs ≥Rating 8 |
Impulse Fatigue | ISO 6803 | 500k cycles @ ΔP=±25% WP |