Shaanxi wantong automation equipment Co.,Ltd

Date: 18th July 2016
Pneumatic Diaphragm Actuator
Welcome to purchase discount source pneumatic diaphragm actuator from our company, which is one of the best China pneumatic diaphragm actuator manufacturers and suppliers.Pneumatic diaphragm actuatorFisher 3025 Sizes P462, P460-200, and P900 Diaphragm ActuatorFisher 3025 diaphragm actuator Size P460-200, P462 and P900 spring opposed diaphragm actuators position the valve plug in the valve body in response to varying controller or valve positioner pneumatic output signals applied to the actuator diaphragm. They can be specified as either direct, e.g. air-to-close, or reverse acting e.g. air-to-open. These actuators are designed to provide dependable on-off or throttling operation of automatic control valves.The size P462 is available for travels up to 120 mm, 4.75 inches with air-to-open and air-to-close action.The size P460-200 is available for travels up to 200 mm, 8 inches with air-to-open and air-to-close action.The size P900 is available for travels up to 120 mm, 4.75 inches with air-to-open and air-to-close action.Features1) Long Travel Capability?Suitable for valves with valve plug travels of up to 200mm(8 inches).2) Application Versatility?Yoke boss mountings, travel stops, andmanual operators are available for nearlyany control valve requiring longer valve plug travels.3) Positive Connections?Split block stem connection provides for a solid transfer of motion while allowing easymounting, and it includes no linkages to create lost motion and inaccurate valve positioning.4) Reversible Construction?Actuator action can be easily changed on site without need of additional parts.5) Long Service Life?Rugged steel construction provides stability and corrosion protection.Specification3025 pneumatic diaphragm ActuatorD102789X012MaximumTravelSizes P462 and P900: 120mm(4.75 inches)Size P460-200: 200mm(8 inches)Output IndicationStainless steel disc or pointer and graduated scaleStroking SpeedDependent on actuator size, travel, spring rate, initial spring compression, and supply pressure. If stroking speed is critical, consult your Emerson Process Management sales office. Operating Temperature Range-30 to 80_CVolumetric DisplacementSee table 2Signal Connection1/2 NPT internalMaximum Pressure4 bargConstruction MaterialsDiaphragm Casing: SteelDiaphragm: Nitrile on nylonDiaphragm Plate: SteelActuator Spring: Steel alloyActuator Stem: Steel alloyTravel Indicator: Stainless steelYoke: Steel
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