TKM Metering Pumps ... USA Manufacturer of metering pumps, skid solutions and consultancy. All manufactured on site at headquarters in Marietta, GA USA. Mechanical Diaphragm, Hydraulic Diaphragm and Plunger Metering Pumps, supplied worldwide for chemical and dosing needs to the water, waste water, oil and gas, mining, petro chem , agriculture industries. . A robust pump built to last with the highest quality components made from hardened steel, brass gearing and reinforced over sized diaphragms, for durability, reliability and longevity. Minimal maintenance required.