Pressure & Vacuum Switches

Pressure and vacuum switches are used in pneumatic systems to allow pressure or vacuum to flow from one place to another, ensuring that the overall system remains stable. They form part of the control system, ensuring that optimal conditions are maintained.

How do pressure and vacuum switches work?

Pressure and vacuum switches work in different ways. Pressure switches are controlled by the level of fluid pressure on the input. When the pressure reaches a certain level, an electrical contact will be closed, ensuring that the pressure stays within given bounds. Vacuum switches regulate the flow of vacuum between two spaces, ensuring it is present where it is needed.

Types of pressure and vacuum switches

Different pressure and vacuum switches operate under different types of pressure, such as negative pressure, electro-mechanical pressure, relative pressure and compound pressure. This is determined by the conditions in which they operate, and of course will impact which one you choose for your project. These switches also have different types of connection, different maximum and minimum pressure settings, and varying voltage drops.


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Description Price Minimum Operating Pressure Maximum Operating Pressure Pressure Type Suitable Media Connection Type Voltage Rating Connection Thread Size Manufacturer Series Contact Operation Connection Thread Standard Minimum Operating Temperature Maximum Operating Temperature IP Rating
RS Stock No. 100-0674
Mfr. Part No.PAC50-BCD
BrandSick
HK$1,316.68
Each
units
-1bar 1 bar Negative Pressure, Positive Pressure Air G 1/4 Female, M12 4-Pin, 4 mm Pneumatic Hose - 17 → 30V dc M12, 1/4 in PAC50 Normally Closed, Normally Open G, Metric 0°C +60°C IP65, IP67
RS Stock No. 297-0052
BrandRS PRO
HK$284.29
Each
units
1bar 12 bar Positive Pressure - G 1/4 Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS Stock No. 296-9989
BrandRS PRO
HK$1,341.90
Each
units
2bar 40 bar Positive Pressure Oil G 1/4 Adjustable 250V ac/dc 1/4 in K5 Normally Closed, Normally Open G -20°C +80°C IP65
RS Stock No. 297-0080
BrandRS PRO
HK$333.07
Each
units
20bar 200 bar Positive Pressure - G 1/4 Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS Stock No. 363-5968
BrandRS PRO
HK$438.87
Each
units
1bar 10 bar Positive Pressure - G 1/4 Adjustable 250V ac/dc 1/4 in K3 Normally Closed, Normally Open G -20°C +80°C IP65
RS Stock No. 302-5759
Mfr. Part No.IS 3000-F02
BrandSMC
HK$683.07
Each
units
- 8 bar Positive Pressure Air, Gas Rc 1/4 - 30 V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS Stock No. 723-012
Mfr. Part No.81513552
BrandCrouzet
HK$474.70
Each
units
2bar 8 bar Positive Pressure Air, Gas, Liquid Push In Adjustable 220 → 230V 4 mm 81 Normally Closed, Normally Open - -10°C +70°C IP20
RS Stock No. 847-7048
Mfr. Part No.ZS-38-A1
BrandSMC
HK$43.12
Each
units
- - - - - - - - ZS - - - - -
RS Stock No. 777-069
Mfr. Part No.04015600
BrandNorgren
HK$1,702.78
Each
units
0bar 10 bar Positive Pressure Air, Gas G 1/8 - 24 V dc, 240 V ac 1/8 in 040 Normally Closed, Normally Open G -20°C +80°C IP65
RS Stock No. 843-0367
Mfr. Part No.IS3000-N02
BrandSMC
HK$705.55
Each
units
- 0.8 (Operating) MPa, 1 (Proof) MPa - Air, Inlet Gas NPT 1/4 Reed 125 V dc, 250 V ac 1/4 IS3000 Normally Closed, Normally Open NPT -5°C +60°C IP40
RS Stock No. 906-9617
Mfr. Part No.MS-111
HK$871.06
Each
units
- 6.89 kPa Differential Air, Gas, Non Combustible NPS 1/2 in Pressure Transmitter 10 → 36V dc 1/2 in MS - NPS -18°C +66°C IP65
RS Stock No. 880-2299
BrandRS PRO
HK$781.09
Each
units
0.2bar 2.5 bar - Fluid 1/4 in BSP Male Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS Stock No. 725-305
Mfr. Part No.ZSM1-021L(P31806-01)
BrandSMC
HK$836.00
Each
units
-80kPa -27 kPa Vacuum Air, Gas R 1/8 Reed 100V ac/dc 1/8 in ZSM1 - R -5°C +60°C -
RS Stock No. 511-6655
Mfr. Part No.SCPSD-060-04-16
BrandParker
HK$2,826.00
Each
units
0bar 60 bar Positive Pressure - G 1/4 - 1.5V dc 1/4 in SCPSD - G -20°C +85°C IP65, IP67
RS Stock No. 366-3979
Mfr. Part No.0880200
BrandNorgren
HK$1,083.78
Each
units
0.2bar 2 bar Positive Pressure Gas, Liquid G 1/4 - - 1/4 in 18D Normally Closed, Normally Open G 0°C +80°C IP65
RS Stock No. 822-3951
Mfr. Part No.0880400000000000
HK$827.23
Each
units
1bar 16 bar Vacuum Gaseous, Hydraulic, Liquid Fluid, Neutral, Non-Combustible Water Application, Pneumatic, Vacuum G 1/4 Electromechanical Relay - 1/4 in 18D Normally Closed, Normally Open G -10°C +85°C IP65
RS Stock No. 389-6006
Mfr. Part No.PS1-P1091
BrandParker
HK$521.21
Each
units
2bar 5 bar Positive Pressure - - - 250V - PS1 Normally Closed, Normally Open - -15°C +60°C -
RS Stock No. 246-2416
Mfr. Part No.IS3000-02
BrandSMC
HK$676.38
Each
units
- 0.8 MPa Positive Pressure Air, Gas Rc 1/4 - 30 V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS Stock No. 701-3551
Mfr. Part No.ZSE80F-F02-B
BrandSMC
HK$2,051.76
Each
units
-100kPa 100 kPa Compound Pressure Fluid G 1/4 Reed 12 → 24V dc 1/4 in ZSE80 - G 0°C +50°C IP65
RS Stock No. 535-2299
Mfr. Part No.0862442000000000RS
BrandNorgren
HK$2,365.43
Each
units
0bar 10 bar Positive Pressure Air, Gas G 1/8 - 10.8 → 30V dc 1/8 in 40D - G 0°C +50°C IP65