Series A1F Low Cost OEM Pressure Switch

Low Cost OEM Pressure Switch
Field Installable Weatherproof Enclosure

Field Installable Weatherproof Enclosure

Low cost and precision made, the SERIES A1F Pressure Switch is ideal for OEM industrial applications. Wetted materials of 316 SS and fluorocarbon ensure great chemical compatibility with a wide range of process media. The open case style is perfect for panel mounting applications like pump skids. Field installable weatherproof enclosure is available in polycarbonate offering a low cost weatherproof switch. Superior 15 A contact allows direct control of motors or pumps without the use of external relays, a true cost savings. Features include a convenient indicating scale for quick and easy field adjustment.

Product Applications

  • OEM
  • Compressors
  • Motor control
  • Process equipment
  • Pump control
More Information
Model Chart


EXAMPLEA1FOSS11STWSeries A1F-O-SS-1-1-STW Pressure Switch, open housing, 316SS pressure chamber, one SPDT switch, range 2-15 psi, with SS tag.
SERIESA1F     Low Cost OEM Pressure Switch
Polycarbonate with Conduit Entry
  SS   316 Stainless Steel
SWITCH   1  One SPDT Switch
RANGE    1
 2-15 psi
4-75 psi
8-225 psi
16-450 psi
Stainless Steel Tag Wired
  • Weatherproof Enclosure. Optional enclosure factory installed. To order change "O" to "PC". Example: A1F-PC-SS-1-1.
Service: Compatible liquids and gases.
Wetted Materials: Pressure Chamber: 316 SS; Diaphragm: Fluorocarbon.
Temperature Limit: -40 to 175°F (-40 to 80°C).
Pressure Limits: 500 psig (34 bar).
Enclosure Rating: No rating for open construction. Installed properly within an optional enclosure meets NEMA 4X standards.
Switch Type: SPDT snap switch.
Electrical Rating: 15 A @ 120/240/480 VAC, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC.
Electrical Connection: Screw terminals.
Process Connection: 1/4" female NPT and 1/2" male NPT.
Mounting Orientation: Within 20° of vertical.
Set Point Adjustment: Knurled screw cap with indicating scale.
Deadband: Fixed, see products on Order page for minimum and maximum deadband.
Weight: 10.5 oz (297 g).
Agency Approvals: CE, cUL, UL.
  • 15 A contact allows direct control reducing costs and reliability by having to introduce additional contacts and relays
  • Case style allows use for panel mounting application with optional weather-proof enclosure for use in outdoor environments
  • Field adjustable reduces installation time bring application on-line faster
  • Wetted material provides support for wider range of process media