PP pumps are single-acting pneumatic pumps that require a 3/2-way valve to activate the pneumatic cylinder. These pumps are designed to deliver lubricant through a single outlet and are equipped with a spring-loaded pressure plate and an indicator rod for level monitoring. PP pumps are suitable for both indoor and outdoor use and have a single outlet. They can be used with both primary and secondary metering devices.
Compared to PP pumps, PPG units are equipped with a built-in metering device with 8 outputs, which allows them to be used as small-sized pneumatically driven sequential systems.