Switches
Pressure switches are an important element of many fluid systems—both hydraulic and pneumatic. They are a type of switch that relies on fluid pressure to control the operation of connected devices and systems. After a specific pressure limit has been set, a mechanism connects or separates electrical contacts within the switch once it has been reached.
This action opens or closes an electric circuit to start or stop the flow of power into the load. Whether contact connection or separation occurs on pressure rise or pressure fall depends on the switch design.
These elements are found in a wide range of fluid systems for a variety of industries and applications, including automobiles, HVAC systems, and pumps. They come in different designs and sizes, ranging from mechanical to electronic, small to medium to large, and more.
Airtrol’s pressure and vacuum switches activate (or deactivate) an electrical connection at a given setpoint. Applications include monitoring pressures of various fluids, controlling compressors or pumps, indicator lights and controlling electrical signals to other devices. Setpoint adjustment ranges from 0.05 to 100 Psi (pressure) & 0.02 to 30″Hg (vacuum). For Airtrol Switches, four different mounting styles are available. Other options include barbed fittings, gold contacts, various diaphragm materials & deadband ranges. Factory preset switches are available. Air valve switches are also offered, where intrinsic safety is required.
Product Lineup
PP-700 Series Air Valve – Switch
Pressure Series
The 700 Pressure Series is a pilot actuated pressure valve with a precision adjustable pilot setpoint. Perfect for use in applications which require intrinsic safety, pneumatic sequencing, and precise pressure relief. Four mounting styles are available for design flexibility. Valves can be ordered as normally open or normally closed and pilot actuation can be factory preset.
- Valve Type: 3 WAY (Exhaust To Atmosphere) Air Assisted Servo
- Operating Pressure: Valve=20-115 psi [Pressure Only]
- Operating Speed: 64 Msec At 90 Psi VALVE INPUT
- Porting Pilot: Valve=5/32 OD Tube Push In
- Flow Rate: Cv-0.06, Orifice-0.080, 2.5 CFM At 100 Psi
- Supply Consumption: Approx. 100 cc/min @ 90 Psi Valve Input – (Note: Valve only exhausts when in the closed position.)
- Op. Temperature: 40 to 140 F [4 – 60 C]
- Repeatability: Less than +/-2% of full scale pilot adj.
- Effect Of Supply: Less than 0.1 psi increase in pilot setpoint per 10 psi increase in supply
- Media: Filtered Air [5 Micron]
F-4200 Series Pressure Switch
The F-4200 Series pressure to electric switch is designed for the customer with cost and space limitations, and is available in adjustment ranges from .5 to 100 PSI full scale. Four mounting styles, plus a wide variety of options including gold contacts, factory pre-set and special deadbands, make the F-4200 series an excellent choice for the O.E.M.
- Contact Form: Single Pole, Double Throw
- Terminations: .187 Quick-Connect
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F [4°-66° C]
- Repeatability: < +/- 2% F.S. OR .15PSI, (1.03 kPa) whichever is greater, after 10,000 cycles
VP-700 Series Air Valve – Switch
Vacuum Series
The 700 series is a pilot actuated pressure valve with a precision adjustable pilot setpoint. Perfect for use in the applications which require intrinsic safety, pneumatic sequencing, and precise pressure relief. Four mounting styles are available for design flexibility. Valves can be ordered as normally open or normally closed and pilot actuation can be factory preset.
- Valve Type: 3 WAY (Exhaust To Atmosphere) Air Assisted Servo
- Operating Pressure: PILOT=Vacuum 1-30 InHg Valve=20-115psi [Pressure Only]
- Operating Speed: 64 MSEC @ 90 psi VALVE INPUT
- Porting Pilot: Valve=5/32 OD Tube Push In
- Flow Rate: Cv=.06 Orifice=0.080 2.5 CFM @ 100psi
- Supply Consumption: Approx. 100 cc/min @ 90psi Valve Input – (Note: Valve only exhausts when in the closed position)
- Op. Temperature: 40 TO 140 F [4-60 C]
- Repeatability: Less than +/-2 % of full scale pilot adj.
- Effect Of Supply: Less than 0.1 InHg increase in pilot setpoint per 5psi increase in supply
- Media: Filtered Air [5 Micron]
F-4200X Series Vacuum Switch
The F-4200-X series vacuum to electric switch is designed for the customer with cost and space limitations, and is available in adjustment ranges from 4″ WC to 30″ Hg full scale. A wide variety of options including gold contacts, factory pre-set and special deadbands, make the F-4200-X series an excellent choice for the O.E.M.
- Contact Form: Single Pole, Double Throw
- Terminations: .187 Quick-Connect
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F [4°-66° C]
- Repeatability: < +/- 2% F.S. OR .15″ Hg, (3.8 mm Hg) whichever is greater, after 10,000 cycles
AT-1004 Low Pressure Factory Pre-Set Pressure Switch
The AT-1004 series of low pressure switches is designed for applications where adjustability is not required. Available preset from 1.5 to 17 inches of water column. Applications include liquid level sensing, confirmation of system pressure and footpedal interfacing. Contact an Airtrol Application Engineer with your requirements.
- Contact Form: Single Pole, Double Throw
- Terminations: .187 Quick-Connect
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° – 150° F (4° – 66° C)
- Set-Point Tolerance: +/- 10% of setting OR .5″ WC, whichever is greater
F-4300 Series Low Deadband Pressure Switch
The F-4300 series pressure to electric switches are designed for applications requiring narrow operating deadband. They are available in adjustment ranges from 2 to 100 psi full scale. Four mounting styles, plus a wide variety of options including gold contacts, factory pre-set, and solvent bonded barbed fittings, make the F-4300 series an excellent choice for the O.E.M.
- Contact Form: Single Pole, Double Throw
- Terminations: .110 Quick-Connect
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F [4°-66° C]
- Repeatability: < +/- 2% F.S. OR .15 PSI, (1.03 kPa) whichever is greater, after 10,000 cycles
F-3000 Series Subminiature Pressure Switch
The F-3000 Series pressure to electric switch is designed to meet the strictest space limitations. This unique pressure switch is constructed of chemical resistant and heat stable material. Factory pressure settings from 3 to 50 psi, for extended life, higher setpoints can be attained for devices not requiring extended life. A variety of mounting options and port connections make the F-3000 Series an excellent choice for the O.E.M.
- Contact Form: SPDT, Silver, 3 Amp, 125 VAC (Standard)
- Terminations: 0.090″, Solder Terminals or PC Board Terminals
- Agency Compliances: UL/CSA Marking Designations (Microswitch)
- Temperature Range: 40° TO 185° F [4°-85° C]
- Repeatability: +/- 5% of Setpoint, or +/- 0.5 psi (whichever is greater)
- Media: Air, Gas, Oil, Water, etc.
- Over Pressure: 100 psi Maximum
- Setpoint Accuracy: +/- 10% or +/- 0.5 psi (whichever is greater)
Features
- Subminiature Size
- Chemical Resistance
- Pipe, Panel, or Circuit Board Mounting
- 1/8″NPT or 10-32 Porting
- 3 Amp, Snap Action Switching
- Factory Preset
F-4300X Series Low Deadband Vacuum Switch
The F-4300 series pressure to electric switches are designed for applications requiring narrow operating deadband. They are available in adjustment ranges from 2 to 100 psi full scale. Four mounting styles, plus a wide variety of options including gold contacts, factory pre-set, and solvent bonded barbed fittings, make the F-4300 series an excellent choice for the O.E.M.
- Switch Type: Single Pole, Double Throw
- Terminations: .110 Quick-Connect
- Approvals: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F [4°-66° C]
- Repeatability: < +/- 2% F.S. OR .15″ Hg whichever is greater, after 10,000 cycles
F-4000 & F-4000X Series Adjustable Deadband Switches
The F-4000 Series pressure and vacuum switches are unique in that both the actuation and release points can be set independently of each other. Available in pressure ranges to 60″ WC and vacuum to 15″ Hg. Gold contacts and solid state hall effect switch options are also available.
- Contact Form: Single Pole, Double Throw
- Terminations: .187 Quick-Connect
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F [4°-66° C]
- Repeatability: +/- 2% F.S.
- Current Rating: 15 AMPS
F-4400 Series PC Board Mount Pressure Switch
The F-4400 series pressure to electric switches are designed for P.C. board mount applications and are available in adjustment ranges from 2 to 100 psi full scale. A wide variety of options including gold contacts, factory pre-set and solvent bonded barbed fittings, make the F-4400 series an excellent choice for the O.E.M.
- Contact Form: Single Pole, Double Throw
- Terminations: .060 (1.52mm) Solder Leads
- Agency Compliances: UL/CSA Approved Microswitch
- Operating Speed: 25 MSEC
- Temperature Range: 40° TO 150° F
- Repeatability: < +/- 2% F.S. OR .1 PSI, whichever is greater, after 10,000 cycles