Smartflow® Flow Regulators Smartflow Flow Regulators provide a unique, leak-free, single-point manual flow control. This regulator incorporates the proven mechanical flowmeter and integral needle valve in a compact design. Very few moving parts improve reliability and leak-free operation. Used singly or in combination with a water manifold, the flow regulator allows manual control of individual cooling water lines. Features and Benefits Compact size well-suited to small locations ¼” to ½” inlet size, 3/8” outlet Rugged construction provides years of dependable service 210°F (99°C) temperature rating allows installation into a wide range of applications. Optional temperature gauge No mounting restrictions ease installation in any position without extra brackets or hardware. Manually control multiple cooling zones on a single tool with ganged installation on a return manifold.