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庫存編號 100-0674
製造零件編號PAC50-BCD
BrandSick
HK$1,316.68
單位
-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庫存編號 297-0052
BrandRS PRO
HK$284.29
單位
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庫存編號 296-9989
BrandRS PRO
HK$1,341.90
單位
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庫存編號 297-0080
BrandRS PRO
HK$333.07
單位
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庫存編號 723-012
製造零件編號81513552
BrandCrouzet
HK$474.70
單位
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庫存編號 302-5759
製造零件編號IS 3000-F02
BrandSMC
HK$683.07
單位
- 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庫存編號 847-7048
製造零件編號ZS-38-A1
BrandSMC
HK$43.12
單位
- - - - - - - - ZS - - - - -
RS庫存編號 363-5968
BrandRS PRO
HK$438.87
單位
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庫存編號 511-6655
製造零件編號SCPSD-060-04-16
BrandParker
HK$2,826.00
單位
0bar 60 bar Positive Pressure - G 1/4 - 1.5V dc 1/4 in SCPSD - G -20°C +85°C IP65, IP67
RS庫存編號 389-6006
製造零件編號PS1-P1091
BrandParker
HK$521.21
單位
2bar 5 bar Positive Pressure - - - 250V - PS1 Normally Closed, Normally Open - -15°C +60°C -
RS庫存編號 511-2192
製造零件編號3301074101
BrandTecsis
HK$968.00
單位
0bar 6 bar Negative Pressure, Positive Pressure - G 1/4 - 0 → 10V 1/4 in 330 - G -20°C +80°C IP67
RS庫存編號 407-6089
製造零件編號0882300
BrandNorgren
HK$980.62
單位
25bar 250 bar Positive Pressure Fluid, Oil G 1/4 - - 1/4 in 18D Normally Closed, Normally Open G -20°C +80°C IP65
RS庫存編號 880-2299
BrandRS PRO
HK$781.09
單位
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庫存編號 366-3979
製造零件編號0880200
BrandNorgren
HK$1,083.78
單位
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庫存編號 701-3551
製造零件編號ZSE80F-F02-B
BrandSMC
HK$2,051.76
單位
-100kPa 100 kPa Compound Pressure Fluid G 1/4 Reed 12 → 24V dc 1/4 in ZSE80 - G 0°C +50°C IP65
RS庫存編號 906-9617
製造零件編號MS-111
HK$871.06
單位
- 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庫存編號 725-305
製造零件編號ZSM1-021L(P31806-01)
BrandSMC
HK$836.00
單位
-80kPa -27 kPa Vacuum Air, Gas R 1/8 Reed 100V ac/dc 1/8 in ZSM1 - R -5°C +60°C -
RS庫存編號 246-2416
製造零件編號IS3000-02
BrandSMC
HK$676.38
單位
- 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庫存編號 843-0367
製造零件編號IS3000-N02
BrandSMC
HK$705.55
單位
- 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庫存編號 822-3951
製造零件編號0880400000000000
HK$827.23
單位
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