Technical Specifications Parameter Specification Model R622-DC1 Type Eccentric Rotary Control Valve Valve Body Style Angle Pattern, Flanged Valve Size 2-inch (DN50) - from "62" code Pressure Class ANSI Class 300 - from "62-2" code Actuator Type Pneumatic Spring-Diaphragm - "DC1" configuration Actuator Action Spring-Return (Single-Acting) - Fail-safe (air-to-open or air-to-close) Air Signal 3-15 psig (0.2-1.0 bar) standard Travel Approximately 50° of rotation Flow Characteristic Approximately Equal Percentage - standard for eccentric plug Leakage Class ANSI Class IV (metal seats) or better Temperature Range -50°F to +450°F (-46°C to +232°C) - standard, extendable with special seals
