Fisher 67AFSR/225 Filter Pressure Regulator

Technical Specifications

Model：67AFSR/225 Brand：Fisher Product Type: 67A series stainless steel filter pressure regulator

Module Feature

Fisher 67AFSR/225 belongs to 67A series spring operated filter regulator. It integrates air filtration and pressure reduction in one unit. Stainless steel body construction with built-in 5 micron filter and internal overpressure relief function. It removes solid particles from instrument air and provides stable regulated air output for pneumatic positioners and controllers. Anti-corrosion structure suitable for harsh industrial environment. Widely used in oil,gas,chemical and power plant control valve instrument air loop.

Working principle: Spring-diaphragm pressure sensing with integrated filtration and internal relief Onboard components: Stainless steel body, filter cartridge, diaphragm assembly, pressure adjustment spring, adjusting knob, gauge port, relief valve

LED indicators

Not equipped

Hardware self-diagnosis

Visual inspection, pressure setpoint test, output pressure stability test, air tightness leakage test, filter element clog check

Programming software

No dedicated software required

Pneumatic Parameters

Medium:Dry instrument air Max inlet pressure:250psi Output pressure range:0~60psi

Mechanical & Structure

Mounting: Pipe mount or direct mount on actuator bracket Protection class:IP66

Environmental

Operating temperature:-40℃ ~ +80℃ Ambient humidity:5~95% non-condensing Certification:CE Status:Fisher 67A series filter regulator

System compatibility

Compatible with Fisher pneumatic and digital valve positioners such as DVC series, provides clean and stable instrument air supply.

Function

67AFSR/225 is stainless steel filter regulator manufactured by Fisher. It filters solid contaminants in instrument air, reduces high inlet air pressure to stable set output pressure. Built-in internal relief protects downstream pneumatic instruments from overpressure damage. It is essential air preparation accessory for control valve pneumatic circuit.

Installation

Follow lockout/tagout safety procedure before installation. Isolate instrument air supply. Mount regulator on pipeline or actuator bracket. Connect upstream instrument air line. Rotate adjustment knob to set target output pressure. Test pressure stability and air tightness, replace filter element periodically.

Interface

1/4"NPT inlet/outlet air ports, pressure gauge tapping port, mounting lugs, no LED indicators on 67AFSR/225.

Diagnostic

Output pressure drifting: Spring fatigue or diaphragm damage. No air output: Filter cartridge fully blocked. Continuous air venting: Internal seat wear or overpressure. External air leakage: Seal aging or threaded fitting loose.

Product Brief

67AFSR/225 Fisher 67A series stainless steel instrument air filter regulator,with 5 micron filter and internal relief,for pneumatic valve positioner air cleaning and pressure stabilization,pneumatic control accessory.