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GDR‑500E High‑Pressure Breathing Air Compressor is a heavy‑duty 4‑stage piston breathing compressor specially built for filling scuba diving tanks and firefighting self‑contained breathing apparatus (SCBA). It delivers 500 L/min (18 cfm) flow rate with dual working pressure: 225 bar for scuba diving and up to 350 bar for firefighting air bottles.
Producing clean breathable compressed air compliant with ISO 12021 and CGA Grade‑D breathing‑air requirements, this unit fits fire stations, dive centres, offshore platforms, chemical plants and emergency rescue teams. Multiple drive options (electric explosion‑proof motor, diesel or gasoline engine) support site‑specific deployment. Robust construction guarantees over 10‑year service life under regular maintenance.
Product Advantages
Dual‑pressure working mode
Switchable max working pressure: 225 bar (scuba diving) / 350 bar (fire‑fighting SCBA). Adjustable high‑pressure safety valve provides reliable over‑pressure protection for operators and cylinders.
High‑purity breathing‑air output
Multi‑stage purification with activated carbon & molecular‑sieve filter cartridges. Final‑stage oil‑moisture separator removes contaminants, delivering breathable air meeting international breathing‑air standards for life‑critical applications.
Flexible power & motor options
220‑440 V, 50/60 Hz 3‑phase IP55 electric motor as standard; explosion‑proof motor, diesel engine or gasoline engine are optional for hazardous‑area installation.
Durable long‑life components
Wear‑resistant CMC‑alloy cylinder and piston assemblies. Air‑cooled structure with stainless‑steel & aluminium condenser tubes, built for continuous heavy‑load operation.
Smart operational safety functions
Auto condensate drain, automatic shutdown protection, shock‑proof pressure gauge. Support single‑port or dual‑port inflation to fill one or two cylinders simultaneously; inflation‑time recording system for traceable filling logs.
Full customization capability
Support OEM & ODM: custom voltage, inflation ports, cabinet colour, logo marking and wooden export packaging.
Complete after‑sales support
12‑month whole‑machine warranty (consumable parts excluded). Online technical guidance, global agent support and overseas engineer service on request.
Typical Applications
Fire‑fighting: Municipal & miniature fire stations, SCBA cylinder refilling.
Diving: Dive shops, sports diving clubs, offshore marine operations.
Industry: Chemical plant rescue, high‑pressure gas testing, air‑tightness inspection.
Other: Shooting sports, racing breathing‑air charging, medical‑related gas preparation.
Standard Configuration
Main unit GDR‑500E with IP55 electric motor.
Start‑stop button control panel with HMI touch screen.
Multi‑stage filter set (activated carbon + molecular sieve cartridges).
Final‑stage oil‑moisture separator, auto condensate drain valve.
Shock‑proof high‑pressure gauge, adjustable safety relief valve.
One set inflation valve & filling hose.
Power cable and motor protection switch.
Export‑grade custom wooden case for shipment.
Optional Upgrades
Explosion‑proof electric motor (ATEX compliant available).
Diesel / gasoline engine drive package.
Dual inflation ports for simultaneous double‑cylinder filling.
Extra sets of filter consumables for first‑year operation.
Custom logo, cabinet colour, special‑voltage modification.
Product Parameters
| Item | Parameter |
|---|---|
| Model | GDR‑500E |
| Medium | Breathing Air |
| Charging Rate | 500 L/min (18 cfm) |
| Working Pressure | 225 bar (Diving) / 350 bar (Fire‑fighting) |
| Compression Stage | 4‑stage, 3‑cylinder balanced‑opposed piston |
| Drive | Electric motor (220‑440 V, 50/60 Hz, 3‑phase IP55) |
| Power | 11 kW (15 HP) |
| Cooling Method | Forced air cooling |
| Lubrication Type | Crankcase splash lubrication (oil‑free output air) |
| Operating Ambient Temp | 5 °C ~ 45 °C |
| Filtration System | Suction filter: 2‑μm paper / 25‑μm polyester; Activated carbon + molecular‑sieve filter cartridge after final stage |
| Dimension(L×W×H) | 1500 × 860 × 1550 mm |
| Weight | 380 kg |
| Packaging | Custom export wooden box |
Quality & Certification
Each unit undergoes minimum 5‑hours continuous running test before factory delivery
Available certificates: CE, ISO 9001; supporting documents can be provided upon request
Key critical components sourced from qualified overseas suppliers
Manufactured by Shanghai Rocky Machinery Co., Ltd, with 18‑year compressor manufacturing experience, audited by BV third‑party inspection.
Packing & Delivery
Packing: Reinforced custom fumigated wooden export case
Standard lead‑time: 15 working days for standard‑voltage models. Non‑customary specifications subject to confirmation by sales team.
Shipping term: FOB Shanghai / CIF destination port available. Freight cost quoted upon buyer’s destination.
Our Service Commitment
Warranty: 12‑month warranty for whole machine. Filter cartridges, sealing rings and other consumable spare parts are excluded from warranty coverage.
Technical support: Online installation & commissioning guidance; worldwide agent network for local service; overseas engineer support available for project site (service cost on request).
Spare‑parts supply: Consumable and replacement parts can be supplied at factory cost after warranty expiry.
OEM / ODM: Accept full customisation for your project or brand requirement.
FAQS
Q1: Are you a real manufacturer?
A: Yes, we are professional compressor manufacturer with over 18‑year experience in compressor R&D and production.
Q2: What is your MOQ?
A: MOQ is 1 set.
Q3: What payment terms do you accept?
A: T/T, L/C at sight, Western Union, Paypal are acceptable. Multiple currencies including USD, EUR, RMB are supported.
Q4: What about maintenance cycle?
A: First maintenance required after 500 running hours; routine maintenance every 2000‑3000 running hours, adjusted according to actual working environment.
Q5: Can you provide certificates for import customs clearance?
A: CE, ISO 9001 documents can be offered according to your market requirement. Please advise your target country when sending inquiry.
Q6: How long is the expected service life?
A: More than 10‑year service life under correct operation and scheduled regular maintenance.
