We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
Image not available
DwyerAdjustable Set-Point Air Pressure Switches

Dwyer Pressure Switch: Adj

The Dwyer 1823-40 is an adjustable set-point air pressure switch with auto reset, featuring a SPDT switch rated for 120 to 480V AC. It has an adjustable range of 5 in wc to 44 in wc and includes a conduit box with…

SKU 3G-OTH-69432

Brand
Dwyer
Item
Pressure Switch: Adj
Category
Adjustable Set-Point Air Pressure Switches
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Dwyer
Brand
DWYER
Switch Voltage
120 to 480V AC
Manufacturer Part Number
1823-40
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer 1823-40 is an adjustable set-point air pressure switch with auto reset, featuring a SPDT switch rated for 120 to 480V AC. It has an adjustable range of 5 in wc to 44 in wc and includes a conduit box with NPT connection.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer adjustable set-point air pressure switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
Pressure Switch: Adj, Auto Reset, 3 in wc to 22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-20). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-20; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 3 in wc to 22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-20). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-20; Brand: DWYER.
Pressure Switch: Adj, Auto Reset, 0.07 in wc to 0.22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-00). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-00; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 0.07 in wc to 0.22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-00). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-00; Brand: DWYER.
Pressure Switch: Adj, Auto Reset, 0.15 in wc to 0.5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-0). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-0; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 0.15 in wc to 0.5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-0). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-0; Brand: DWYER.
Pressure Switch: Adj, Auto Reset, 5 psi to 100 psi, Conduit Box, SPDT, NPT, 120/240V AC (MPN DA-7031-153-6). Key specifications — Switch Voltage: 120/240V AC; Manufacturer Part Number: DA-7031-153-6; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 5 psi to 100 psi, Conduit Box, SPDT, NPT, 120/240V AC (MPN DA-7031-153-6). Key specifications — Switch Voltage: 120/240V AC; Manufacturer Part Number: DA-7031-153-6; Brand: DWYER.
Pressure Switch: Adj, 4 in wc to 20 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT, 1/8 in NPT (MPN 1910-20). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1910-20; Brand: DWYER.
Dwyer
Pressure Switch: Adj, 4 in wc to 20 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT, 1/8 in NPT (MPN 1910-20). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1910-20; Brand: DWYER.
Pressure Switch: Adj, 3 in wc to 11.75 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT (MPN 1910-10). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1910-10; Brand: DWYER.
Dwyer
Pressure Switch: Adj, 3 in wc to 11.75 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT (MPN 1910-10). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1910-10; Brand: DWYER.

More from Dwyer

View all Dwyer parts →
Pressure Switch: Adj, Auto Reset, 1.5 in wc to 5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-5). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-5; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 1.5 in wc to 5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-5). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-5; Brand: DWYER.
Dwyer
Dwyer
Pressure Switch: Adj, Auto Reset, 9 in wc to 85 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-80). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-80; Brand: DWYER.
Dwyer
Dwyer
Pressure Switch: Adj, 3 in wc to 12 in wc, Conduit Box, SPDT, 1/8 in Sample Line Connection Size (MPN 1638-10). Key specifications — Switch Voltage: 125V AC; Manufacturer Part Number: 1638-10; Brand: DWYER.
Dwyer
Dwyer
Pressure Switch: Adj, 0.15 in wc to 1.5 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT (MPN 1627-1). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1627-1; Brand: DWYER.
Pressure Switch: Adj, 5 psig to 150 psig, Conduit Box, SPST, NPT, 120V AC/240V AC/DC (MPN DA-31-2-7). Key specifications — Switch Voltage: 240V AC/DC; Manufacturer Part Number: DA-31-2-7; Brand: DWYER.
Dwyer
Pressure Switch: Adj, 5 psig to 150 psig, Conduit Box, SPST, NPT, 120V AC/240V AC/DC (MPN DA-31-2-7). Key specifications — Switch Voltage: 240V AC/DC; Manufacturer Part Number: DA-31-2-7; Brand: DWYER.
Pressure Switch: Adj, Auto Reset, 0.3 in wc to 1 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-1). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-1; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 0.3 in wc to 1 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-1). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-1; Brand: DWYER.
Air Pressure Switch: Adj, Auto Reset, 0.8 in wc to 4 in wc, Std Housing, SPDT, Push-On, 250V AC (MPN ADPS-05-2-N). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: ADPS-05-2-N; Brand: DWYER.
Dwyer
Air Pressure Switch: Adj, Auto Reset, 0.8 in wc to 4 in wc, Std Housing, SPDT, Push-On, 250V AC (MPN ADPS-05-2-N). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: ADPS-05-2-N; Brand: DWYER.
Pressure Switch: Adj, 0.4 in wc to 1.6 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT (MPN 1910-1). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: 1910-1; Brand: DWYER.
Dwyer
Pressure Switch: Adj, 0.4 in wc to 1.6 in wc, SPDT, 1/8 in Sample Line Connection Size, NPT (MPN 1910-1). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: 1910-1; Brand: DWYER.