The OV-110 Omni Valve from Global Treat offers versatility and provides ideal accuracy and reliability. It is an all-in-one chemical control valve for chemical feed. It is capable of operating in eight different control modes and can handle a wide range of chemicals and capacities. It is constructed from high-quality materials and is machine-made so there are few moving parts, which reduces the chance of long-term repairs. 800/370-4410; www.globaltreat.com.