How pilot-operated valves work. Any pilot-operated valve is designed to withstand higher backpressure than a spring-loaded valve. The main valve piston is protected by the guide and balanced without having any fragile components that are prone to fail. The main valve has the same pressure at the inlet and on the dome—the dome is the upper.. Guide: Pilot Operated Safety Valves O&SI, Birkett, Pressure and Safety Relief Valves (VCOSI-01201-EN) Author: Emerson Subject: Before installation these instructions must be read fully and understood Keywords: Birkett, Regulators-Relief-Valves, Pressure-and-Safety-Relief-Valves Created Date: 1/9/2018 3:30:16 PM
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Backflow Preventer: a part or a feature of a pilot operated pressure relief valve used to prevent the valve from opening and flowing backwards when the pressure at the valve outlet is greater than the pressure at the valve inlet. II. TYPES OF DEVICES Pressure Relief Valve (PRV). Emerson offers a wide range of both direct spring-operated and pilot-operated pressure and safety relief valves. These include Anderson Greenwood™ and Crosby™ Pressure Relief Valves, providing proven overpressure protection with innovative designs and materials for process industries, and Kunkle™ Pressure Relief Valves for commercial and industrial applications.
