9500 Liquid Modulating Series is designed to gradually open the main valve in response to system overpressure. Modulating pilots produce far less shock on a system and provide considerable resistance to wear and tear on the main valve components. Our 9500 Liquid Modulating Pilot is based on proven control design principals, featuring our "Auto Seat Technology"®. The 9500 Liquid Modulating Series valve is manufactured in accordance with the requirements of ASME Boiler and Pressure Vessel Code, Section XIII UV stamped applications for Liquid service. When you need to regulate system pressures and maintain overall quality, you need a safe and reliable valve. With a service range of 15 psi to 1480 psi and a wide array of options and applications, our 9500 Liquid Modulating Pilot Series is a valve that you trust.