The Pentax PM45 is a compact peripheral (regenerative) turbine pump engineered for high-pressure, low-to-moderate flow applications using clean water. Designed with durable brass/bronze wet-end construction and a precision brass impeller, the PM45 delivers reliable water boosting for showers, small irrigation circuits, garden sprinklers, washing systems and domestic pressure support. The single‑phase PM45 is a cost-effective, low-maintenance solution where steady pressure and compact footprint matter.

Key features & benefits

• Maximum pressure: 4.0 bar (suitable for shower boosting and small domestic systems).
• Maximum flow: up to 40 L/min; maximum head: ~40 m — ideal for point-of-use pressure increase.
• Construction: brass/bronze pump body and brass impeller for corrosion resistance in clean water service.
• Not self-priming; can draw up to 6 m with a foot valve / suction strainer.
• 1" BSP inlet/outlet, compact dimensions and light weight for easy installation.
• Motor rating ~0.37 kW; single-phase and 230V options commonly available.

Applications & installation notes

Best used with clean, non-abrasive liquids. Common applications include domestic pressure boosting, negative-head shower pump setups, small irrigation packs, and circulation in light industrial or agricultural systems. Because the PM45 is not self-priming, install with a foot valve or place below water level when suction lift is required. Regularly protect with a suction strainer and follow manufacturer guidance for temperature and duty limits.