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DUNGS FRG - Ratio Regulator & Zero Governor (US/CA) - Pressure regulator
DungsPressure regulator

DUNGS FRG - Ratio Regulator & Zero Governor (US/CA)

The DUNGS Ratio Regulator and Zero Governor FRG are spring loaded gas pressure regulators for proportional pressure control with an offset from 0,25 to 20 kPa and pressure proportion up to 15 kPa.

SKU 3G-OTH-02942

Also listed as: FRGUSCA · FRG US CA

Brand
Dungs
Item
FRG - Ratio Regulator & Zero Governor
Part Number
FRG-US-CA
Category
Pressure regulator
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Documents

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DUNGS Ratio Regulator and Zero Governor FRG are spring loaded gas pressure regulators for proportional pressure control with an offset from 0,25 to 20 kPa and pressure proportion up to 15 kPa.

Frequently Asked Questions

What is the DUNGS FRG ratio regulator and zero governor used for?

The DUNGS FRG is a spring-loaded gas pressure regulator used in industrial and commercial heating applications. As a ratio regulator, it maintains a constant gas/air ratio during burner turndown. As a zero governor, it reduces incoming gas pressure to zero or slightly above/below atmospheric pressure. It is suitable for dry natural gas, propane, butane, air, and inert gases.

What are the specifications of the DUNGS FRG/6 series?

The DUNGS FRG/6 series is available in pipe thread sizes from 1/2 in. NPT to 3 in. NPT. Maximum operating pressure is 7 PSI (500 mbar) factory rating, 5 PSI (350 mbar) CSA certified. Optimal inlet pressure range for ratio regulator is 3 to 82 in. W.C. (7 to 200 mbar). Output pressure range is 0 to 60 in. W.C. (0 to 150 mbar). CSA certified to ANSI Z21.18 / CSA 6.3.

Where to buy DUNGS FRG ratio regulators in Singapore?

3G Electric supplies the DUNGS FRG ratio regulator and zero governor to customers in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for a quotation and lead time on your required model and pipe size. We source genuine DUNGS components for industrial gas train applications.

How to install a DUNGS FRG ratio regulator?

Install the DUNGS FRG in accordance with NFPA 86, ANSI Z83.4, and local codes. Connect the air impulse line to maintain proper gas/air ratio control. Use the 1/4 in. NPT test ports on each side for pressure measurement. The factory-installed vent limiter is standard; review applicable codes for vent line requirements. Ensure the regulator is oriented correctly for spring-loaded operation.

Used in

Common applications for Dungs
Industrial steam boilers — MB-ZRDLE MultiBloc on modulating gas-fired plant
Hospital and hotel plant rooms — MB-D series for two-stage commercial burners
Food-industry ovens and dryers — DMV butterfly valves on high-turndown modulating lines
Petrochemical gas-train skid assemblies — FRS / FRSBV regulators with GW pressure switches
Retrofit drop-in replacements for older Dungs MB assemblies on existing Weishaupt / Riello burners
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Dungs Products

3G Electric supplies Dungs pressure regulator. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
The SMC AR20-N02B-Z-D is a die-cast zinc air regulator with a 1/4 in NPT connection. It features a knob adjustment mechanism and operates within a pressure range of 7.251887 psi to 123.2821 psi, with a maximum operating pressure of 1 MPa. This regulator is used to control and stabilize pressure in pneumatic systems
SMC
The SMC AR20-N02B-Z-D is a die-cast zinc air regulator with a 1/4 in NPT connection. It features a knob adjustment mechanism and operates within a pressure range of 7.251887 psi to 123.2821 psi, with a maximum operating pressure of 1 MPa. This regulator is used to control and stabilize pressure in pneumatic systems
Die-cast zinc air regulator from the AR-D series with 1/4 in NPT port size. Pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment for regulating downstream pressure in pneumatic systems
SMC
Die-cast zinc air regulator from the AR-D series with 1/4 in NPT port size. Pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment for regulating downstream pressure in pneumatic systems
Die-cast zinc air regulator from the AR-D series with 1/4 in NPT connection. Pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment, no gauge included. Used in pneumatic systems to control downstream pressure in industrial automation and compressed air networks
SMC
Die-cast zinc air regulator from the AR-D series with 1/4 in NPT connection. Pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment, no gauge included. Used in pneumatic systems to control downstream pressure in industrial automation and compressed air networks
Die-cast zinc air regulator with 1/4 in NPT ports. Operating pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment for downstream pressure control in pneumatic systems
SMC
Die-cast zinc air regulator with 1/4 in NPT ports. Operating pressure range 2.900755 psi to 29.0075 psi, maximum operating pressure 1 MPa. Knob adjustment for downstream pressure control in pneumatic systems
Die-cast zinc air regulator with 1/4 in NPT ports. Adjustable pressure range from 2.900755 psi to 29.0075 psi via knob. Maximum operating pressure 1 MPa. Used in pneumatic systems to regulate downstream pressure in industrial automation and material handling applications
SMC
Die-cast zinc air regulator with 1/4 in NPT ports. Adjustable pressure range from 2.900755 psi to 29.0075 psi via knob. Maximum operating pressure 1 MPa. Used in pneumatic systems to regulate downstream pressure in industrial automation and material handling applications
Die-cast zinc body air regulator with 1/4 in NPT ports. Operating pressure range 7.251887 psi to 123.2821 psi, maximum 1 MPa. Knob adjustment for precise pressure control in pneumatic systems
SMC
Die-cast zinc body air regulator with 1/4 in NPT ports. Operating pressure range 7.251887 psi to 123.2821 psi, maximum 1 MPa. Knob adjustment for precise pressure control in pneumatic systems

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