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Differential Pressure Mechanical Pressure Switch

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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 (2)
1.5 inH₂O (2)
1.6 inH₂O (5)
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 (8)
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)

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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 (2)
0.8 inH₂O (2)
0.12 inH₂O (2)
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 (6)
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)

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Measurement Pressure Type

Absolute (1)
Differential (19)
Gauge (1)
Vacuum (1)

In Stock

sku_availability

brand

Dwyer (19)
Omega (4)

configurable

Media Compatibility

Air (14)
Alkaline solutions (1)
Any (1)
Argon (13)
Butane (2)
Carbon dioxide (13)

Air (14)
Alkaline solutions (1)
Any (1)
Argon (13)
Butane (2)
Carbon dioxide (13)
Combustible Gases (2)
Consult Factory (4)
Dilute Acids (1)
Gases (1)
Helium (13)
Hydraulic Oil (1)
Hydrogen (3)
Light Oil (1)
Liquids (1)
Methane (2)
Nitrogen (13)
Non-Corrosive Dry Gases (12)
Non-corrosive Dry Gasses (1)
Oil (1)
Oxygen (2)
Propane (2)
Solvents (1)
Steam (1)
Water (1)
Water-based fluids (1)

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Compliance

CE (11)
CSA (5)
cULus (3)
FM (5)
UL (6)

Switch Type

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

Process Connection Type

Barbed Fitting (4)
NPT Female (15)
NPT Male (1)
NPT Male and Female (2)
Stem (1)

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)

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Applications

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

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

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Differential Pressure Mechanical Pressure Switch

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23 Products

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Series-1640

Dwyer® Differential Pressure Switch, Floating Contact, High/Low Actuation

The Dwyer® Differential Pressure Switch features a floating contact design for high/low actuation, perfect for damper positioning and duct air control.

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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.

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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.

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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.