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The Haskel M-12 is a compact 1/3 HP pneumatic liquid pump from Haskels M-Series, ideal for low-pressure fluid applications requiring up to 1,500 psi (103 bar). Powered solely by compressed air, this single-air-head pump offers a 12:1 nominal ratio (actual ~14:1), safe operation without sparks or heat, and a stall-and-hold mechanism to maintain pressure without continuous air usage. Its robust stainless-steel construction and precision seals ensure reliability and low maintenance. With a stroke displacement of just 0.36 in, its perfectly suited for small-volume transfers, clamp applications, and precise pressure testing.
- Delivers up to 1,500 psi continuous pressure
- Purely pneumatic operation, spark-free and explosion-safe
- Stall-and-hold design retains pressure without consuming air
- Compact single-air-head with 0.36 in displacement
- Stainless-steel body with optional wetted-material variants
| Model / Part No. | M-12 |
| Horsepower | 0.33 HP (1/3 HP) |
| Ratio (Nominal / Actual) | 12 : 1 / ~14 : 1 |
| Max Hydraulic Pressure | 1,500 psi (continuous) |
| Displacement per Cycle | 0.36 in ( 5.9 mL) |
| Max Flow Rate | ~234 in /min ( 3.8 L/min) |
| Air Drive Pressure | Up to 125 psi |
| Seal Options | Standard UHMWPE/Teflon; Optional EPR/Viton |
| Weight | ~9 lb (4 kg) including packaging |