78L Air Reservoir Air Storage Tank Compressed Air Tank for Railway Brake System
78L Air Reservoir Air Storage Tank Compressed Air Tank
Product Overview
Our 78L Air Reservoir, also widely known as Air Storage Tank or Compressed Air Tank, is a high-pressure compressed air storage vessel specially engineered for railway vehicle braking systems and industrial pneumatic systems. Manufactured in strict accordance with international pressure vessel standards and railway industry specifications, this tank serves as a core air source buffer and storage device to stabilize system pressure, eliminate air pressure pulsation from air compressors, and ensure stable, reliable operation of pneumatic braking and control systems.
Adopting high-quality pressure vessel steel and precision welding technology, the 78L compressed air tank features excellent pressure resistance, impact resistance and low-temperature adaptability. It is widely applicable for railway freight cars, locomotives, engineering machinery and general industrial compressed air stations. Customized designs for different working pressure, interface standards and installation dimensions are available to meet global customers' diverse application needs.
Core Features & Advantages
- Reliable Pressure Storage Performance: Standard 78L nominal volume effectively reserves sufficient compressed air, balances pipeline pressure, avoids frequent start-stop of air compressors, and improves the overall service life of the pneumatic system.
- High-Strength Material Construction: Made of premium Q245R / Q345R pressure vessel steel, with integral head stamping and full penetration welding. The tank body undergoes strict non-destructive testing to ensure no weld defects, supporting long-term stable operation under high pressure and vibration conditions.
- Strict Safety Certification & Testing: Each tank completes factory hydraulic pressure test, air tightness test and radiographic inspection. Zero leakage and no deformation under rated working pressure, meeting international pressure vessel safety standards.
- Extreme Environment Adaptability: Designed for harsh working conditions, with a working temperature range of -40°C to +70°C. Excellent vibration resistance and corrosion resistance, suitable for outdoor, mobile and high-intensity working scenarios.
- Standard & Customizable Interfaces: Reserved standard threaded ports for air inlet, air outlet, drain valve and safety valve. Support G-thread, NPT, BSPP and other international thread standards to match global equipment assembly requirements.
- Durable Surface Treatment: Sandblasting rust removal + anti-rust primer + weather-resistant topcoat, effectively preventing oxidation and corrosion, extending the service life of the tank in humid and harsh environments.
Technical Parameters
| Item | Technical Specification |
| Product Name | 78L Air Reservoir / Air Storage Tank / Compressed Air Tank |
| Nominal Volume | 78 Liters |
| Rated Working Pressure | 0.9 MPa (9 Bar) |
| Hydraulic Test Pressure | 1.35 MPa (1.5 times working pressure, 5 min pressure holding) |
| Air Tightness Test | 0.9 MPa rated pressure holding, no pressure drop & no leakage |
| Main Material | Q245R / Q345R Pressure Vessel Steel |
| Working Temperature Range | -40°C ~ +70°C |
| Structure Type | Horizontal cylindrical tank + elliptical head, single chamber |
| Welding Standard | Full penetration welding, RT/MT non-destructive testing |
| Standard Interface | G1, G1-1/2 (Custom NPT/BSPP thread available) |
| Auxiliary Fittings | Drain valve port, safety valve mounting port, pressure gauge port |
| Surface Treatment | Sandblasting rust removal, epoxy anti-rust primer, weather-resistant finish |
| Application Fields | Railway vehicle braking system, industrial pneumatic system, engineering machinery, air compressor station |
Application Scenarios
This 78L compressed air tank is a universal air storage solution, widely used for railway freight cars, passenger car auxiliary braking systems, railway locomotives, construction machinery pneumatic components, factory compressed air supply systems and other fields. It can effectively stabilize air source pressure, reduce system fluctuation, and provide safe and stable compressed air support for pneumatic braking, pneumatic control and pneumatic power equipment.
Custom Service
We support customized volume, working pressure, tank size, thread interface, surface color and logo printing. All products comply with international pressure vessel manufacturing standards, and can provide factory test reports, material certificates and other qualification documents to meet global import and inspection requirements.
For bulk orders, customized parameters or OEM cooperation, please contact our sales team for a quotation.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.