Skip to search Skip to main content Skip to navigation

1-800-663-4209 | Welcome to our new website, found an issue or bug? Please report it here

Search DwyerOmega

All Products
Resources
Services
Our Brands
Configurables
Company Information
- About Us
  - About Us
- Careers
  - Careers
Australia Brazil Canada Canada(FR) China Denmark France Germany India Italy Japan Korea Malaysia Mexico Netherlands Philippines Singapore Spain Taiwan Thailand United States United Kingdom

Home
See Pressure
See Differential Pressure
Differential Pressure Mechanical Pressure Switch

We noticed you are from . Visit your local site for regional offers and live support.

Stay here.

Go to the site >

Configuration complete.
Please add to cart to keep it or exit the configuration

Failed to Save Configurations, Click on Configure Button Start Again

price

$0-$49.99 (4)
$50-$199.99 (7)
$200-$499.99 (6)
$500-$999.99 (6)
$1,000-$9,999.99 (4)

Measurement Pressure, Max

0.02 inH₂O (1)
0.5 inH₂O (8)
0.15 inH₂O (3)
0.22 inH₂O (1)
0.361 psi (1)
1 inH₂O (5)

0.02 inH₂O (1)
0.5 inH₂O (8)
0.15 inH₂O (3)
0.22 inH₂O (1)
0.361 psi (1)
1 inH₂O (5)
1 kPa (2)
1 psi (1)
1.2 inH₂O (3)
1.5 inH₂O (2)
1.6 inH₂O (6)
2 inH₂O (7)
2 psi (1)
3 inH₂O (3)
3 kPa (2)
4 inH₂O (3)
4 kPa (1)
5 inH₂O (3)
5 psi (1)
5.5 inH₂O (4)
6 inH₂O (3)
6 mmHg (1)
6 psi (1)
8 inH₂O (1)
8 psi (1)
9 inH₂O (1)
10 inH₂O (6)
10 mmHg (1)
10 psi (3)
11 inH₂O (4)
12 inH₂O (1)
13 psi (1)
15 inH₂O (3)
15 psi (1)
20 cmH2O (1)
20 inH₂O (9)
20 psi (1)
22 inH₂O (1)
23 inH₂O (1)
24 inH₂O (1)
25 mmHg (2)
25 psi (4)
30 inH₂O (3)
30 psi (1)
44 inH₂O (1)
45 psi (2)
50 inH₂O (2)
50 mmHg (2)
50 psi (2)
60 inH₂O (1)
60 Pa (1)
70 psi (1)
75 psi (1)
85 inH₂O (1)
90 psi (1)
100 inH₂O (2)
100 mmHg (2)
125 Pa (2)
160 psi (1)
250 Pa (2)
250 psi (1)
500 Pa (2)
1000 psi (1)
-30.5 inHg (1)

More Options Show Less

Measurement Pressure, Min

0 psi (1)
0.0 inH₂O (2)
0.0 psi (2)
0.01 inH₂O (1)
0.1 inH₂O (1)
0.2 inH₂O (3)

0 psi (1)
0.0 inH₂O (2)
0.0 psi (2)
0.01 inH₂O (1)
0.1 inH₂O (1)
0.2 inH₂O (3)
0.3 inH₂O (1)
0.4 inH₂O (3)
0.5 inH₂O (3)
0.5 psi (2)
0.07 inH₂O (4)
0.08 inH₂O (3)
0.8 inH₂O (2)
0.12 inH₂O (3)
0.15 inH₂O (5)
1 psi (1)
1.0 inH₂O (2)
1.4 inH₂O (4)
1.5 inH₂O (1)
1.5 psi (1)
2.0 inH₂O (6)
2.0 psi (1)
2.5 inH₂O (1)
2.5 psi (1)
3.0 inH₂O (5)
3.0 psi (1)
4 psi (1)
4.0 inH₂O (7)
4.0 psi (1)
5.0 inH₂O (1)
5.0 psi (1)
7.5 inH₂O (1)
8.0 inH₂O (1)
9.0 inH₂O (1)
10 psi (2)
10.0 psi (1)
15.0 inH₂O (1)
15.0 psi (1)
20.0 psi (1)
25 psi (1)
35.0 psi (1)
50 psi (1)
60.0 inH₂O (1)

More Options Show Less

Measurement Pressure Type

Absolute (1)
Differential (20)
Gauge (1)
Vacuum (1)

In Stock

sku_availability

brand

Dwyer (20)
Omega (4)

configurable

Media Compatibility

Air (15)
Alkaline solutions (1)
Any (1)
Argon (14)
Butane (2)
Carbon dioxide (14)

Air (15)
Alkaline solutions (1)
Any (1)
Argon (14)
Butane (2)
Carbon dioxide (14)
Combustible Gases (2)
Consult Factory (4)
Dilute Acids (1)
Gases (1)
Helium (14)
Hydraulic Oil (1)
Hydrogen (3)
Light Oil (1)
Liquids (1)
Methane (2)
Nitrogen (14)
Non-Corrosive Dry Gases (13)
Non-corrosive Dry Gasses (1)
Oil (1)
Oxygen (2)
Propane (2)
Solvents (1)
Steam (1)
Water (1)
Water-based fluids (1)

More Options Show Less

Enclosure Ratings

IP54 (3)
IP65 (3)
IP67 (1)
NEMA Type 3 (1)
NEMA Type 4 (1)
NEMA Type 4X (1)

IP54 (3)
IP65 (3)
IP67 (1)
NEMA Type 3 (1)
NEMA Type 4 (1)
NEMA Type 4X (1)
NEMA Type 7 (1)
NEMA Type 9 (1)
NEMA Type 13 (2)
None (2)

More Options Show Less

Switch Type

(2) SPDT (2)
Selectable (18)
SPDT NO/NC (18)
SPDT with Manual Reset (1)
SPST (2)
SSR (1)

category

Differential Pressure Mechanical Pressure Switch (23)
Single Pressure Sensors & Transmitters (1)

Deadband

0 to 0.75 psi (1)
0 to 1 psi (1)
0.1 inH2O (1)
0.1 to 0.2 inH2O (1)
0.01 to 0.03 inH2O (1)
0.1 to 0.4 psi (1)

0 to 0.75 psi (1)
0 to 1 psi (1)
0.1 inH2O (1)
0.1 to 0.2 inH2O (1)
0.01 to 0.03 inH2O (1)
0.1 to 0.4 psi (1)
0.1 to 0.12 inH2O (1)
0.1 to 0.15 inH2O (1)
0.02 to 0.06 inH2O (1)
0.3 inH2O (1)
0.3 psi (1)
0.3 to 0.4 inH2O (1)
0.03 to 0.12 inH2O (1)
0.03 to 0.18 inH2O (1)
0.4 inH2O (1)
0.04 inH2O (1)
0.04 to 0.2 inH2O (1)
0.4 to 0.5 inH2O (4)
0.04 to 0.05 inH2O (3)
0.04 to 0.06 inH2O (1)
0.4 to 0.6 inH2O (1)
0.4 to 0.9 inH2O (1)
0.05 inH2O (1)
0.5 psi (1)
0.5 to 1.2 inH2O (1)
0.06 inH2O (1)
0.6 to 0.8 inH2O (2)
0.06 to 0.09 inH2O (2)
0.06 to 0.11 inH2O (1)
0.7 psi (1)
0.08 inH2O (1)
0.08 to 0.09 inH2O (3)
0.9 psi (1)
0.9 to 1.8 inH2O (1)
0.11 to 0.29 inH2O (1)
0.14 to 0.28 inH2O (1)
0.15 to 0.2 inH2O (1)
0.15 to 0.16 inH2O (1)
0.15 to 0.35 inH2O (1)
0.18 to 0.45 inH2O (1)
0.25 to 0.65 inH2O (1)
0.35 to 0.7 inH2O (1)
0.56 to 1.1 inH2O (1)
1 psi (1)
1 to 1.4 inH2O (2)
1 to 1.5 psi (1)
1.2 to 3 inH2O (1)
1.3 to 3 inH2O (1)
1.5 psi (1)
1.5 to 2.5 psi (1)
2.5 to 3.5 psi (1)
3.5 to 6 psi (1)
4 inH2O (1)
6 to 8 psi (1)

More Options Show Less

Compliance

CE (12)
CSA (5)
cULus (3)
FM (5)
UL (6)

compliance

CE (12)
RoHS3 (19)

Proof Pressure

4x Full Scale up to 3000 psi (1)
6x Full Scale up to 1000 psi (1)
10x Full Scale up to 1000 psi (1)
-20 inHg to 25 psi (1)
Up to 2 psi (1)
Up to 4 psi (1)

4x Full Scale up to 3000 psi (1)
6x Full Scale up to 1000 psi (1)
10x Full Scale up to 1000 psi (1)
-20 inHg to 25 psi (1)
Up to 2 psi (1)
Up to 4 psi (1)
Up to 6 psi (1)
Up to 8 psi (1)
Up to 10 psi (3)
Up to 25 psi (1)
Up to 30 psi (1)
Up to 40 inH2O (3)
Up to 45 inH2O (4)
Up to 50 inH2O (1)
Up to 50 psi (1)
Up to 70 psi (1)
Up to 90 psi (1)
Up to 150 psi (1)
Up to 200 psi (1)
Up to 2000 psi (1)
Up to 9000 psi (1)

More Options Show Less

Materials, Wetted

316L Stainless Steel (1)
Aluminum (2)
Brass (3)
Buna-N (NBR) (1)
Consult Factory (10)
Fluoroelastomer (1)

316L Stainless Steel (1)
Aluminum (2)
Brass (3)
Buna-N (NBR) (1)
Consult Factory (10)
Fluoroelastomer (1)
Nylon 6.6 (2)
POM (2)
Silicone (2)
Steel (2)

More Options Show Less

Electrical Connection

1/2 in NPT female Conduit with Screw Terminal block (4)
1/2 in NPT male Conduit with Cable (1)
7/8 in knockout with Screw Terminal block (2)
Cable (2)
M20 Female Conduit with Strain Releif and Screw Terminal block (2)
MIL-26482-I 10-6P (1)

1/2 in NPT female Conduit with Screw Terminal block (4)
1/2 in NPT male Conduit with Cable (1)
7/8 in knockout with Screw Terminal block (2)
Cable (2)
M20 Female Conduit with Strain Releif and Screw Terminal block (2)
MIL-26482-I 10-6P (1)
Pigtail Leads (2)
Screw Terminal (10)
Spade Lugs (1)

More Options Show Less

Operating Temperature, Max

70.0 °C (2)
107.0 °C (1)
110.0 °F (2)
120.0 °F (2)
121.0 °C (1)
130.0 °F (1)

70.0 °C (2)
107.0 °C (1)
110.0 °F (2)
120.0 °F (2)
121.0 °C (1)
130.0 °F (1)
140.0 °F (4)
150.0 °F (2)
158.0 °F (1)
180.0 °F (5)
185.0 °F (2)
225.0 °F (1)

More Options Show Less

Process Connection Type

Barbed Fitting (5)
NPT Female (15)
NPT Male (1)
NPT Male and Female (2)
Stem (1)

Operating Temperature, Min

0.0 °C (1)
0.0 °F (1)
14.0 °F (1)
20.0 °F (2)
30.0 °F (1)
32.0 °F (2)

0.0 °C (1)
0.0 °F (1)
14.0 °F (1)
20.0 °F (2)
30.0 °F (1)
32.0 °F (2)
40.0 °F (2)
-4.0 °F (2)
-10.0 °F (2)
-30.0 °F (5)
-40.0 °C (1)
-40.0 °F (1)
-45.0 °C (1)
-54.0 °C (1)
-65.0 °F (1)

More Options Show Less

Process Connection Size

1/2 in x 1/8 in (1)
1/4 in (5)
1/4 in x 1/8 in (1)
1/8 in (10)
3/16 in (2)
5/16 in (3)

1/2 in x 1/8 in (1)
1/4 in (5)
1/4 in x 1/8 in (1)
1/8 in (10)
3/16 in (2)
5/16 in (3)
5/32 in (1)

More Options Show Less

Mounting Orientation

90 ° Elbow (1)
Cross (1)
Horizontal Diaphragm (1)
Horizontal Ports (1)
Not Position Sensitive (1)
Panel Mount (1)

90 ° Elbow (1)
Cross (1)
Horizontal Diaphragm (1)
Horizontal Ports (1)
Not Position Sensitive (1)
Panel Mount (1)
Side Tee (1)
Straight (1)
Tee (1)
Vertical (3)
Vertical Diaphragm (8)
Vertical with Downward Pressure Ports (3)

More Options Show Less

Materials

300 Stainless Steel (1)
316 Stainless Steel (1)
Aluminum (2)
Brass (2)
Bronze (1)
Neoprene (1)

300 Stainless Steel (1)
316 Stainless Steel (1)
Aluminum (2)
Brass (2)
Bronze (1)
Neoprene (1)
Nickel-Plated Brass (1)
Nylon (1)
Polycarbonate (3)
Polyester (1)
Polyethylene (1)
Polysulfone (1)
Polyurethane (2)
PTFE (1)
Stainless Steel (1)

More Options Show Less

Division

0 (1)
0.1 inH2O (1)
0.01 inH2O (1)
0.1 kPa (1)
0.2 inH2O (1)
0.02 inH2O (1)

0 (1)
0.1 inH2O (1)
0.01 inH2O (1)
0.1 kPa (1)
0.2 inH2O (1)
0.02 inH2O (1)
0.02 kPa (1)
0.2 mmH2O (1)
0.5 cmH2O (1)
0.05 inH2O (1)
0.5 inH2O (1)
0.5 mmH2O (1)
1 inH2O (1)
1 mmH2O (1)
2 inH2O (1)
2 mmH2O (1)
2 Pa (1)
5 Pa (1)
10 Pa (1)

More Options Show Less

Switch Rating

1 A @ 30 Vdc, 0.3 A @ 110 Vdc / 0.5 A @ 125 Vac (1)
1.5 A/0.4 A @ 250 Vac (2)
4 A @ 125/250 Vac (1)
5 A @ 120/240 Vac, 5 A @ 30 Vdc (1)
5 A @ 125/250 Vac, 5 A @ 30 Vdc (1)
10 A @ 120/240 Vac/28 Vdc; 50 mA @ 125 Vdc (1)

1 A @ 30 Vdc, 0.3 A @ 110 Vdc / 0.5 A @ 125 Vac (1)
1.5 A/0.4 A @ 250 Vac (2)
4 A @ 125/250 Vac (1)
5 A @ 120/240 Vac, 5 A @ 30 Vdc (1)
5 A @ 125/250 Vac, 5 A @ 30 Vdc (1)
10 A @ 120/240 Vac/28 Vdc; 50 mA @ 125 Vdc (1)
15 A @ 120 Vac, 8A @ 240 Vac, 0.5A @ 120 Vdc, 0.25A @ 240 Vdc (1)
15 A @ 120-480 Vac, 1/8 HP @ 125 Vac, 1/4 HP @ 250 Vac (4)
15A @ 120/240 Vac (1)
20 to 280 Vac, 0.01 mA to 1 A (1)
40 mA (2)
AC: 3 VA, 0.25A @ 120 VAC; DC: 5 VA, 0.25A @ 175 VDC (1)
Mica silver (STD) and phenolic silver: 15A @ 125, 250, 480 Vac, 1/8 HP @ 125 Vac, 1/4 HP @ 250 Vac; Phenolic gold: 1A @ 125 Vac (1)
Non-inductive: 2.5A @ 110 Vac, 1.5 A @ 220 Vac, 1 A @ 24 Vdc, 0.5 A @ 110 Vac; Inductive: 1 A @ 110 Vac, 0.5 A @ 220 Vac, 0.5 A @ 24 Vdc (1)

More Options Show Less

Applications

Filter Monitoring (1)
Fluid Measurement and Control (4)
Fuel and Gas (1)
HVAC (5)
Industrial and Manufacturing (3)
Medical (1)

Filter Monitoring (1)
Fluid Measurement and Control (4)
Fuel and Gas (1)
HVAC (5)
Industrial and Manufacturing (3)
Medical (1)
Process Automation and Control (1)
Pump Control (1)
Refrigeration (1)
Refrigeration Equipment (1)

More Options Show Less

Differential Pressure Mechanical Pressure Switch

Grid Table

Sort by:

24 Products

Added to Your Shopping Cart

PSW-180

Industrial Differential Pressure Switch or Alarm

The PSW-180 series are compact, differential 5 A SPDT switches with the option of a relay or alarm output. They have NEMA-4X housings to withstand harsh environments.

View Specs

See More Items from this Family (3)

Added to Your Shopping Cart

PSW-150

General Purpose Industrial Differential Pressure Switch

The PSW-150 series are differential 15 A DPDT switches with a fixed deadband and UL listing for general purpose applications.

View Specs

See More Items from this Family (4)

Added to Your Shopping Cart

Series-PG

Gas Pressure Switches for Air/Gases, ± 1% Repeatability, SPST/SPDT Options

The Gas Pressure/Differential Pressure Switch works with air and gases, has an external setpoint adjustment, and is suitable for natural, manufactured, or LP gas applications.

View Specs

See More Items from this Family (2)

Added to Your Shopping Cart

PSW845

OEM Mechanical Differential Pressure Switch

The PSW-845 series are economical, compact 250 mA SPDT differential pressure switches with a fixed deadband and excellent bypass characteristics.

View Specs

See More Items from this Family (5)

Sort by:

Differential Pressure Mechanical Pressure Switch

Differential pressure mechanical pressure switches monitor pressure differences between two points, activating equipment at preset thresholds. Reliable and durable for system control.