SAMSON 347120 Pumpmaster 4 5:1 Oil Pump

The PumpMaster 4 5:1 pump from Samson is a double-acting air-operated medium pressure utility oil pump for dispensing lubricants from portable units, tank packages and small systems. Built for durability, the Pumpmaster 4 features a unique leaf spring design and corrosion-resistant materials to provide a long pump life.  The Pumpmaster 4 features a built in pressure relief port for an optional pressure relief valve (not included).