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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 |