AP Diaphragm Operated Pressure Switches

Visible set point and external adjustment, available in weatherproof and explosion-proof housing

Starting At
$425.00 CAD
Normally ships in 3-4 Weeks

Configure   Request Quote

Can We Help You?


Our product experts are here to help you find the right solution for your application!

Reliable and convenient, Series AP pressure switch is a compact for instrument air or other low pressure applications. Visible set point and external adjustment add convenience. Used on air, non-corrosive gas or liquid service compatible with wetted parts. Unit also available in weatherproof and explosion-proof housing.

• Explosion-proof and weatherproof housing provides device protection for outdoor use or harsh environment operation
• External switch set point adjustment reduces set-up time

Wetted Materials Nylon reinforced Buna-N and steel. PTFE and 316 SS optional
Temperature Limits -30F - 150F (-35C - 66C)
Pressure Limit See Catalog page
Enclosure Rating General purpose. Weatherproof and explosion-proof optional
Switch Type SPDT mercury switch or SPDT snap switch. Other switch types available
Electrical Rating Mercury switch: 4 A @ 120 VAC/DC, 2 A @ 240 VAC/DC. Snap switch: 15 A @ 120 VAC, 8 A @ 240 VAC, 0.5 A @ 120 VDC, 0.25 A @ 240 VDC
Electrical Connections Screw terminal
Conduit Connection 7/8 in (22.23 mm) hole for 1/2 in (12.7 mm) conduit hub
Process Connection 1/4 in female NPT
Mounting Orientation Vertical for mercury switch models, any position for snap switch models
Set Point Adjustment External screw
Weight General Purpose: 2 lb (0.9 kg)
Deadband See Catalog page
Agency Approvals CE, CSA, FM, UL. For FM consult factory. (Mercury switch units are not CE approved)

• Low pressure applications
• Instrument air