The Samoa PumpMaster 4 PM4 5:1 Pneumatic Piston Oil Pump is a heavy-duty, double-action air-operated pump engineered for efficient, continuous dispensing of lubricants in medium to large installations. Built for performance and durability, it supports multiple simultaneous outlets, making it ideal for workshops, service centres, and industrial lubrication systems. This PM4 model includes a height-adjustable 2" BSP (M) bung adaptor for secure drum or tank mounting, along with a built-in port for an optional pressure relief valve. Designed for reliable delivery, low air consumption, and controlled noise levels, the PumpMaster 4 ensures consistent output even in demanding environments.

• High-performance 5:1 ratio pneumatic piston pump for medium-pressure oil dispensing
• Double-action design ensures smooth, continuous lubricant flow
• Suitable for medium to large installations with multiple simultaneous outlets
• Includes adjustable 2" BSP (M) bung adaptor for drum/tank mounting
• Built-in port for optional pressure relief valve (PN 609 007)
• Air Consumption: At 6 bar (87 psi) with 10 L/min (2.6 gal/min)
• Max Free Delivery: At 7 bar (102 psi) air pressure
• Noise Level: Low operating noise measured at 1 m distance under 7 bar free-delivery conditions
• Engineered for long service life in demanding workshop and industrial environments