The Type P119 Control Valve is versatile and can be used for on/off or throttling service. Spring ranges from 3-15 psi to 30-60 psi. The valve can be used in corrosive or non corrosive gases or liquids, limited by available compatible materials. Maintenance on the valve can be accomplished without removing the valve body from the line (pressure must be removed and the valve isolated before attempting.) A vent is provided in the valve actuator to detect leakage of actuator stem seals. Our composition disc assembly and seat offer positive shutoff at maximum body working pressure. NACE construction materials are standard for the steel body valve only, and comply with the National As sociation of Corrosion Engineers MR0175.