| 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.
| 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 |
| 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 |
| 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.
| 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 |
| 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 |
| 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 |