Fisher 49457 Actuator Spare Component

Technical Specifications

Model：49457 Brand：Fisher Product Type: Pneumatic diaphragm actuator spare component

Module Feature

Fisher 49457 is precision alloy mechanical spare component for Fisher 657/658 series diaphragm actuators. It belongs to internal force transmission assembly of actuator. It has high mechanical strength and good wear and corrosion resistance. Widely used in oil, gas, chemical and power plant globe control valves.

Working principle: Auxiliary force transmission for diaphragm actuator Onboard components: Alloy mechanical part, sealing washer, fixing fasteners

LED indicators

Not equipped

Hardware self-diagnosis

Visual inspection, dimensional measurement, stroke movement inspection, assembly clearance test

Programming software

No dedicated software required

Mechanical & Structure

Mounting: Installed inside pneumatic diaphragm actuator Protection class:IP66

Environmental

Operating temperature:-40℃ ~ +120℃ Ambient humidity:5~95% non-condensing Certification:CE Status:Fisher actuator spare part

System compatibility

Compatible with Fisher 657,658 series pneumatic diaphragm actuators and globe control valves for industrial process control system.

Function

49457 is actuator spare component manufactured by Fisher. It transmits diaphragm thrust to valve stem, ensures stable linear stroke movement during valve modulation. It reduces mechanical clearance and vibration. It guarantees actuator output thrust and valve positioning repeatability. It is critical spare part for actuator overhaul.

Installation

Follow lockout/tagout safety procedure before installation. Cut off instrument air supply and release residual pressure. Disassemble actuator housing, replace old 49457 component. Check sliding clearance and alignment. Reassemble actuator and perform air tightness test and stroke calibration.

Interface

Actuator internal mounting structure, fixed mounting holes, no LED indicators on 49457.

Diagnostic

Insufficient actuator thrust: Worn or deformed spare component. Unstable valve stroke: Loose fastener or abnormal mechanical clearance. Valve sticking: Mechanical friction increased by worn part.

Product Brief

49457 Fisher pneumatic diaphragm actuator mechanical spare component,matched with Fisher 657/658 actuator and globe control valve,used for industrial process control valve maintenance,actuator transmission spare part.