Reliable and convenient, the Dwyer Series AP Diaphragm Operated Pressure Switch is a compact switch 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. Units are available in a weather-proof and explosion-proof housing.
Product Applications
Wetted Materials : Nylon reinforced Buna-N and steel. PTFE and 316 SS optional.
Temperature Limits : -30 to 150°F (-35 to 66°C).
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″ (22.23 mm) hole for 1/2″ (12.7 mm) conduit hub.
Process Connection : 1/4″ female NPT.
Mounting Orientation : Vertical for mercury switch skus, any position for snap switch skus.
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.)
Manuals: Instruction Manual
Catalog Pages: Series AP Catalog Page
High Reliability, Repetitive Accuracy within ±1%
3000MR or 3000MRS Series in Explosion-Proof Enclosures Switch/Gage
Hermetically Sealed Snap or Mercury Switch
