Wilden's Stallion? Series pumps can handle what miners demand: durability, portability and ease of maintenance. Fitted with the revolutionary Pro-Flo X? air distribution system (ADS), PX Stallion pumps are designed to transfer solid-laden slurries safely and effectively. Wilden's Stallion Series pumps are available in 38 mm (1-1/2"), 51 mm (2") and 76 mm (3") sizes and are ready for the most rugged applications.