Dungs FRS Line Pressure Regulators

The Dungs FRS series gas pressure regulators are for reducing the line pressure running between a service regulator and an appliance pressure regulator.

FRS 7../6 Series Class I or Class II

The Dungs FRS series line pressure regulators are for lines running from a service regulator that require pressure reduction before reaching a gas appliance regulator. They are appropriate for high-efficiency appliances, high-turndown appliances, appliances using hot surface ignition or direct spark ignition, and other high-performance applications requiring a regulator. These regulators are suitable for dry natural gas, butane, air, propane, and inert gases. The regulator does not contain any non-ferrous metals and is applicable for gases containing no more than 0.1% by volume, dry H2S. A “dry” gas has a dew point lower than +15 °F, and its relative humidity is less than 60%.

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Features & Benefits

Dungs Line Pressure FRS 7../6 Series

The FRS 7../6 Line pressure regulators are a balancing type, spring-loaded regulator with an adjustable setpoint. They feature an internal sensor for regulating output pressure.

  • Input pressures up to 7 PSI and NPT 1/2” to NPT 3” thread connections (FRS 7../6)
  • Heavy-duty diaphragm construction for durability and strength
  • Steady, precise, and instantaneous regulation of the outlet pressure
  • Lock-up type regulator
  • Factory-installed vent limiter
NPT Threaded VersionsCSA Certified
  • FRS 705/6 (1/2” NPT)
  • FRS 707/6 (3/4” NPT)
  • FRS 710/6 (1” NPT)
  • FRS 712/6 (1 1/4” NPT)
  • FRS 715/6 (1 1/2” NPT)
  • FRS 720/6 (2” NPT)
  • FRS 725/6 (2 1/2” NPT)
  • FRS 730/6 (3” NPT)
  • ANSI Z21.80/CSA 6.22 as a 5 PSI Class I or Class II Line Pressure Regulator
  • File # 1205910
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