Hill Pumps Evo 310
Specifications
- Max pressure
- 4,500 psi (310 bar)
- Cooling
- air (low RPM design)
- Moisture handling
- Dry-Pac Pro air dryer filter optional, compatible across EC-3000/evo/Evo 310
- Auto-stop
- Yes
- Duty cycle
- Automatic air pressure purge activates on every stop (cooling cycle, pause, or finished fill), reducing motor strain on restart and purging moisture; large cylinders are filled across several such cooling cycles
- Noise
- 75 dB
- Weight
- 55 lb
- Vessel guidance
- Designed first for direct gun fills and small-bottle top-ups; demonstrated filling a 3-litre cylinder (100 to 300 bar in 45 minutes including cooling time) and a 480cc bottle (100 to 250 bar in 2.5 minutes)
- Also sold as
- EVO-310, Air Venturi EVO-310 Compressor by Hill
Estimated fill times
| Vessel | 0 → 250 bar | 200 → 300 bar |
|---|---|---|
| gun cylinder 0.3L | 5.8 min | 2.3 min |
| 1L bottle | 19.2 min | 7.7 min |
| 2L bottle | 38.4 min | 15.4 min |
| 3L bottle | 57.6 min | 23 min |
| 6.8L (74ci) tank | 130.6 min | 52.2 min |
| 9L (97ci) tank | 172.8 min | 69.1 min |
All values estimated from stated manufacturer or reviewer benchmarks (8 benchmarks); treat as run-time, not wall-time, past the unit's duty-cycle guidance.
Where to buy
Prices captured 2026-07-06; follow the link for current pricing and stock.
About Hill Pumps
Ernest H Hill Ltd has been engineering in Sheffield since 1844, and its pumps are the reference point the rest of the market gets measured against. The MK-series hand pumps set the standard for dry-air filling with the Dry-Pac moisture system, and the EC-3000 compressor line, now succeeded by the Evo 310, brought the same philosophy to electric filling: low RPM, air cooling, 75 dB operation, and full UK design and assembly. Hill publishes complete manuals, service kits, and even a stroke-count formula for its hand pumps, a level of documentation almost nobody else in the category matches.
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Open my locker →Specifications come from manufacturer pages and named retailer listings; blanks mean a value wasn't published, not that it's zero. Fill-time figures are derived estimates, not lab measurements. Always follow the manufacturer's fill and duty-cycle guidance.