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The Haskel MS-188 is a premium stainless steel pneumatic liquid pump with a 0.33 HP motor, engineered to produce up to 15,000 psig hydraulic pressure. It features a compact 188:1 ratio, 0.023 in displacement per cycle, and a reliable stall-at-pressure capability for holding preset pressure without continuous driving. Built with stainless steel hydraulics and plated steel, it's designed for demanding applications such as hydrostatic testing, fluid transfer, and clamp actuation. The pump provides clean, spark-free operation, ideal for lab, field service, and sensitive environments.
- High-pressure capability: 15,000 psig (1034 bar)
- 188:1 nominal ratio with actual 217:1 performance
- Compact 0.33 HP stainless hydraulic piston assembly
- Stall feature holds output pressure without air input
- Suitable for critical and cleanroom environments
| Model | MS-188 (0.33 HP Stainless) |
| Nominal Ratio | 188:1 (Actual 217:1) |
| Max Output Pressure | 15,000 psig / 1034 bar |
| Displacement | 0.023 in per cycle (~0.4 mL); Max Flow: ~18 in /min |
| Air Drive Pressure | Up to 125 psig; Cycle Rate: ~325 cpm |
| Weight | ~9 lb / 4.1 kg (shipping) |
| Ports |
Inlet: 3/8" NPT Outlet: 1/4" NPT |