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Differential Pressure Mechanical Pressure Switch

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$0-$49.99 (4)
$50-$199.99 (7)
$200-$499.99 (6)
$500-$999.99 (6)
$1,000-$9,999.99 (3)

Measurement Pressure, Max

0.02 inH₂O (1)
0.5 inH₂O (8)
0.15 inH₂O (3)
0.22 inH₂O (1)
1 inH₂O (5)
1 kPa (2)

0.02 inH₂O (1)
0.5 inH₂O (8)
0.15 inH₂O (3)
0.22 inH₂O (1)
1 inH₂O (5)
1 kPa (2)
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)

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Measurement Pressure, Min

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

0 psi (1)
0.0 inH₂O (2)
0.0 psi (1)
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)

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Measurement Pressure Type

Differential (19)

In Stock

sku_availability

brand

Dwyer (20)
Omega (3)

configurable

Switch Type

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

Media Compatibility

Clean dry air / inert gas (13)
Combustible Gases (2)
Consult Factory (4)
Fuel gases (2)
Helium (13)
HVAC / room air (14)

Clean dry air / inert gas (13)
Combustible Gases (2)
Consult Factory (4)
Fuel gases (2)
Helium (13)
HVAC / room air (14)
Hydrogen (2)
Inert / non-reactive gases (13)
Methane (2)
Nitrogen (13)
Non-Corrosive Dry Gases (13)
Oxygen (1)
Propane (2)

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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)

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compliance

CE (12)
RoHS3 (18)

Proof Pressure

-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)

-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)

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Materials, Wetted

Aluminum (2)
Brass (3)
Buna-N (NBR) (1)
Consult Factory (10)
Fluoroelastomer (1)
Nylon 6.6 (2)

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

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Operating Temperature, Max

70.0 °C (2)
107.0 °C (1)
110.0 °F (2)
120.0 °F (2)
130.0 °F (1)
140.0 °F (4)

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

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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)
-54.0 °C (1)
-65.0 °F (1)

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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)

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Process Connection Type

Barbed Fitting (5)
NPT Female (14)
NPT Male and Female (2)
Stem (1)

Process Connection Size

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

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Electrical Connection

1/2 in NPT female Conduit with Screw Terminal block (4)
7/8 in knockout with Screw Terminal block (2)
Cable (1)
M20 Female Conduit with Strain Releif and Screw Terminal block (2)
Pigtail Leads (2)
Screw Terminal (10)

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

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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)

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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)

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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 (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)

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Enclosure Ratings

IP54 (3)
IP65 (2)
NEMA Type 3 (1)
NEMA Type 4 (1)
NEMA Type 4X (1)
NEMA Type 7 (1)

IP54 (3)
IP65 (2)
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)

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Port 1 Size

1/4 in (1)
3/8 in (1)
3/16 in (1)
4 mm (1)
5/8 in (1)
5/16 in (1)

1/4 in (1)
3/8 in (1)
3/16 in (1)
4 mm (1)
5/8 in (1)
5/16 in (1)
6 mm (1)
8 mm (1)
10 mm (1)

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Differential Pressure Mechanical Pressure Switch

Grid Table

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23 Products

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Series-DP

Adjustable Differential Pressure Switch, SPDT, NEMA-1, 600 psig, 316 SS

Double Bellows Differential Pressure Switch accurate switch triggers in high pressure applications. Optional weatherproof construction and explosion-proof enclosure.

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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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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.