Profile: Watts Regulator Co. produces pressure reducing valves to regulate steam and relief valves. We introduce the revolutionary combination of temperature & pressure relief valve and a protection device for use on hot water supply tank systems. We manufacture flow control products for water quality, residential plumbing & heating, commercial and OEM markets. Our ACV modulating float control valve is designed to maintain a constant liquid level in a tank or reservoir. We design ACV pump control valve with pressure reducing feature to minimize the surges associated with the starting & stopping of pumps, with automatic reducion of pump outlet pressure to a constant lower downstream pressure regardless of varying flow rates.