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The Haskel M-21 pneumatic-driven liquid pump delivers robust, spark-free hydraulic power (up to 2,600 psig) using clean air. Featuring a 21:1 ratio (actual 22:1) and delivering 0.2 in per cycle, this compact 0.33 HP pump excels in hydrostatic testing, fluid transfer, and clamping applications. Its built-in stall at pressure function holds predetermined pressure without further air consumption. Lightweight at just 9 lb and crafted from stainless and plated steel, it s durable and easy to maintain. No air-line lubrication required ideal for cleanroom or contamination-sensitive environments.
- Pneumatic operation no heat, spark, or flame
- Pressure up to 2,600 psig continuous (max 2,600 psig)
- Stall-at-pressure feature for static hold
- Lightweight, compact, easy to maintain
- Safe for clean, critical environments
| Model | M-21 |
| Outlet Pressure | 2,600 psig (179 bar) |
| Displacement | 0.20 in /cycle ( 3.3 mL); Max Flow: ~130 in /min |
| Air Drive Pressure | Up to 125 psig; Cycle Rate: ~325 cycles/min |
| Weight | ~9 lb (4.1 kg) |
| Materials | Stainless steel and cadmium-plated steel body, PTFE/Buna seals |