9500 Gas 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 Gas Modulating Pilot is based on proven control design principals, featuring our "Auto Seat Technology"®. The 9500 Gas Modulating Series valve is manufactured in accordance with the requirements of ASME Boiler and Pressure Vessel Code, Section XIII UV stamped applications for Air/Gas service. You need a safe and reliable valve when it comes to regulating system pressures and maintaining overall quality. With a service range of 15 psi to 4500 psi and a wide array of options and applications, our 9500 Gas Modulating Pilot Series is the valve you can trust.