When you want the industry standard for hydronic heating applications, always choose Taco’s 570 Gold Series Heat Motor Valves. Designers prefer these valves for their quiet and dependable operation. Installers appreciate the open lever and twist-off head that makes installation and service easy. Engineered for reliability, 570 Gold Series Heat Motor Valves provide a time proven method for system zoning and control. The exclusive heat motor design operates silently, while the twist-off head allows for serviceability without disturbing system connections. Available in a variety of sizes and styles to meet the broad demands of today’s systems.