Since 1948, McFarland Pumps has been manufacturing high pressure air or gas driven pumps. Our plungertype chemical injection pumps, hydrostatic testing pumps and metering pumps are small, lightweight and easily maintained. Built with stainless steel, our air and gas driven pumps are corrosion resistant which make them suitable for industrial areas including offshore oil and gas platforms. McFarland Pump products are extremely durable with low maintenance costs.