The PENTAX PM45M is a compact peripheral (regenerative) turbine pump engineered for reliable clean-water handling, pressure boosting and small irrigation or sprinkler systems. Built by Pentax with robust materials — brass impeller, ceramic-graphite mechanical seal and cast iron/bronze pump body options — the PM45M delivers high head at modest flow rates for home and light industrial booster duties.

Key features

• Voltage: 230V single-phase, 50Hz; motor power 0.37 kW (≈0.5 HP) — ideal for standard residential supplies.
• Performance: up to ~40 L/min (approx. 2.4 m3/h) and max head ~40 m — suited for pressure boosting and circulation tasks.
• Construction: brass impeller and pump housing options (PM45 / PM45 BR), stainless steel motor shaft (AISI 416), ceramic-graphite-NBR mechanical seal for durability.
• Connections: 1" BSP female inlet and outlet; compact footprint (approx. 155 × 125 × 265 mm) and ~6.2 kg weight.
• Not self-priming; can suction up to 6 m when used with a foot valve/filter — recommended for installations requiring priming assistance.

These specifications make the PM45M a top choice for water booster pumps, garden irrigation, washing systems, and small transfer or circulation applications where a regenerative/peripheral pump’s high-pressure, low-flow characteristics are required.

Installation & usage notes

Install the PM45M in a sheltered, dry location and follow Pentax recommendations for piping, foot valves and controller accessories if automatic switching is needed. The pump performs best with clean, non-abrasive liquids and within the stated temperature and pressure limits; consult product datasheets for detailed performance curves and maintenance intervals.