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F-31 Filter Dryer

Brand: Welker, Inc
The Welker F-31 Filter Dryer is supersized for high pressure, high flow applications. With a 45-lb dry weight and 1” ports, this beefy filter has the capacity to clean and dry natural gas and instrument air for critical pneumatic instruments and operations.

Filter Media Options

Dirt. Debris. Rust. Sulfur. Odorant. Water. Liquid hydrocarbons. Contaminants like these can clog, damage, flood, or even freeze your sensitive instruments if they’re not removed from your pneumatic supply. Welker offers 4 filter cartridge options for the F-31, each with its own proprietary blend of filter media for targeted contaminant removal.

4-Step Cartridge Changeout

Mating threads on the cap and body make servicing the filter cartridge quick and easy. Simply spin the body off to access the cartridge and spin it back on after installing a replacement.

Color-Changing Moisture Indicator

Welker offers two options to help you watch out for water: a built-in moisture indicating eye and the standalone Welker MI-2 Moisture Indicator. Both indicators change from blue to pink when saturated for straightforward and easy visual verification. To monitor the saturation level of your filter cartridge, choose an F-31 with an indicating eye. Install the MI-2 downstream of your F-31 and pressure regulation to monitor moisture in your process.
Features
  • Industry-recognized Welker Filter Dryers
  • Single, dual, or quad filter service configurations
  • Filter cartridge options
  • 4-Step cartridge changeout
  • Welker ALD Automatic Liquid Dump for wet gas streams (optional)
  • Differential pressure gauge(s) (optional)
Benefits
  • Effectively remove contaminants and moisture from pipeline gas for use as seal gas
  • Select Filter Dryer number and configuration best suited for the installation and application
  • Proprietary filter media for targeted contaminant removal
  • Simplified filter maintenance
  • Increase the interval between cartridge changeouts (optional)
  • Local indication of the need for cartridge maintenance (optional)
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The Welker F-31 Filter Dryer is supersized for high pressure, high flow applications. With a 45-lb dry weight and 1” ports, this beefy filter has the capacity to clean and dry natural gas and instrument air for critical pneumatic instruments and operations.

Filter Media Options

Dirt. Debris. Rust. Sulfur. Odorant. Water. Liquid hydrocarbons. Contaminants like these can clog, damage, flood, or even freeze your sensitive instruments if they’re not removed from your pneumatic supply. Welker offers 4 filter cartridge options for the F-31, each with its own proprietary blend of filter media for targeted contaminant removal.

4-Step Cartridge Changeout

Mating threads on the cap and body make servicing the filter cartridge quick and easy. Simply spin the body off to access the cartridge and spin it back on after installing a replacement.

Color-Changing Moisture Indicator

Welker offers two options to help you watch out for water: a built-in moisture indicating eye and the standalone Welker MI-2 Moisture Indicator. Both indicators change from blue to pink when saturated for straightforward and easy visual verification. To monitor the saturation level of your filter cartridge, choose an F-31 with an indicating eye. Install the MI-2 downstream of your F-31 and pressure regulation to monitor moisture in your process.
Features
  • Industry-recognized Welker Filter Dryers
  • Single, dual, or quad filter service configurations
  • Filter cartridge options
  • 4-Step cartridge changeout
  • Welker ALD Automatic Liquid Dump for wet gas streams (optional)
  • Differential pressure gauge(s) (optional)
Benefits
  • Effectively remove contaminants and moisture from pipeline gas for use as seal gas
  • Select Filter Dryer number and configuration best suited for the installation and application
  • Proprietary filter media for targeted contaminant removal
  • Simplified filter maintenance
  • Increase the interval between cartridge changeouts (optional)
  • Local indication of the need for cartridge maintenance (optional)

Specifications

Materials of Construction

  • Buna
  • Carbon Steel
  • PTFE
  • Others Available

Seal Material

  • Buna

Connections

  • 1” FNPT (Standard)

Nominal Filter Rating

  • 1.2 Microns
  • 0.45 Micron

Options

  • Bypass
  • Drain Valve
  • ASME Coded Filter

Maximum Allowable Temperature

  • 200° F

Operating Pressure

  • 1,500 psig MAOP @ -20° F to 100° F

Flow Rate

  • Up to 185 scfm

Typical Applications

  • Natural Gas Compressor Stations
  • Centrifugal Compressors
  • Reciprocating Compressors
  • Offshore Production Sites
  • Processing Plants