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DUNGS AA-A4 - Pressure Switches for air, flue, exhaust gases (US/CA)
DungsPressure switch

DUNGS AA-A4 - Pressure Switches for air, flue, exhaust gases (US/CA)

Adjustable DUNGS Pressure Switches AA-A4 for monitoring overpressure, underpressure or differential pressure. Suitable for air, flue, exhaust gases and non-aggressive gases in burner, ventilation and air-conditioning…

SKU 3G-OTH-02961

Also listed as: AAA4USCA · AA A4 US CA

Brand
Dungs
Item
AA-A4 - Pressure Switches for air, flue, exhaust gases
Part Number
AA-A4-US-CA
Category
Pressure switch
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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Dungs Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Adjustable DUNGS Pressure Switches AA-A4 for monitoring overpressure, underpressure or differential pressure. Suitable for air, flue, exhaust gases and non-aggressive gases in burner, ventilation and air-conditioning systems. Not suitable for natural gas, propane, butane or other fuel gases.

Frequently Asked Questions

What is the DUNGS AA-A4 pressure switch used for?

The DUNGS AA-A4 is an adjustable differential pressure switch designed to monitor overpressure, underpressure, or differential pressure in air, flue, and exhaust gases. It is commonly used in burner, ventilation, and air-conditioning systems. This switch is not suitable for natural gas, propane, butane, or other fuel gases.

What are the specifications of the DUNGS AA-A4 pressure switch?

The DUNGS AA-A4 is an SPDT differential pressure switch with FM Approval for Classes 3510 and 3530. It is suitable for air, flue, and exhaust gases. The switch is adjustable and intended for use in systems covered by NFPA 54, IFGC, and other applicable codes. Always verify ratings from the manufacturer datasheet for your specific application.

Where to buy the DUNGS AA-A4 pressure switch in Singapore?

You can source the DUNGS AA-A4 pressure switch through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this DUNGS model. We provide technical support for burner and HVAC applications locally.

How to install and maintain the DUNGS AA-A4 pressure switch?

Installation and maintenance of the DUNGS AA-A4 must be performed by a trained specialist. Ensure power and gas pressure are off before work. Mount the switch per the manufacturer's instructions, adjust setpoints according to equipment guidelines, and perform a leak and function test after installation. Regular testing is recommended.

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 switch. 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
DUNGS GW...A4 HP - Pressure Switches for gas, air, flue, exhaust gases and hydrogen for high pressure application (US/CA)
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DUNGS GW...A4 HP - Pressure Switches for gas, air, flue, exhaust gases and hydrogen for high pressure application (US/CA)
Diaphragm-actuated pressure switch with a range of 20 psi to 105 psi and factory-set ON/OFF differential of 60 psi/80 psi. Features (4) 1/4" FNPT ports. Suitable for monitoring and controlling pressure in air and water systems such as compressors, pumps, and HVAC equipment
CONDOR USA
Diaphragm-actuated pressure switch with a range of 20 psi to 105 psi and factory-set ON/OFF differential of 60 psi/80 psi. Features (4) 1/4" FNPT ports. Suitable for monitoring and controlling pressure in air and water systems such as compressors, pumps, and HVAC equipment
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" NPT, 60 psi / 80 psi ON/OFF (MPN 11SA2E)
CONDOR USA
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" NPT, 60 psi / 80 psi ON/OFF (MPN 11SA2E)
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SAXE)
CONDOR USA
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SAXE)
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SAXX)
CONDOR USA
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SAXX)
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SA2X)
CONDOR USA
CONDOR USA, INC Pressure Switch: Std, 20 psi – 105 psi, 1/4" FNPT, 60 psi / 80 psi ON/OFF (MPN 11SA2X)

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