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Mercoid Diaphragm Operated Pressure Switches - Series AP

Diaphragm Operated Pressure Gauges - FM Approved, UL & SA

Reliable and convenient, series AP pressure switch is a compact low cost 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.

APPLICATIONS
Chemical petroleum, food and drug processing industries. Used indoor, outdoor or in explosion-proof area.
PHYSICAL DATA
  • Maximum Temperature: -30°F to 150°F
  • Pressure Connection: ¼" NPT female
  • Electrical Ratings: Mercury: SPDT 4A @ 120V, 2A @ 240V AC/DC Snap: SPDT 15A @ 120VAD., 8A @ 250VAC
  • Wiring Connections:3 screw type, common, normally open and normally closed
  • Setpoint Adjustment: Screw type - adjustable from outside cover
  • Housing: Painted steel
  • Wetted Parts: Steel, solder, Buna-N/Nylon (316SS, Teflon available)
  • Weight: 2 lbs. net
  • Installation: Mercury switch unit - vertical, snap switch unit - any position
MODELS NUMBERS (stock shown in bold)
SERIES AP SWITCHES - OPERATING RANGES AND DEAD BANDS
Model
Number
  Switch
Type
SPDT
Switch DeadBand Maximum
Pressure
Range Low High
AP-153-33 10"vac.-50" wc Mercury 5" wc 6" wc 15 psig
AP-153-37 1-30 psig Mercury 0.8 psig 1.5 psig 60 psig
AP-153-39 10-125 psig Mercury 4 psig 10 psig 160 psig
AP-7021-153-33 10"vac.-50" wc Snap 8" psig 10" wc 15 psig
AP-7021-153-37 1-30 psig Snap 0.75 psig 1.5 psig 60 psig
AP-7021-153-39   10-125 psig Snap 3 psig 7 psig 160 psig
 
SUGGESTED SPECIFICATIONS
Pressure switches shall be Mercoid Series AP-(___) operated by Buna-N diaphragm. Setpoint shall be visible, and shall be externally adjustable without shutting down process. Deadband shall be fixed. Switch shall incorporate (hermetically sealed mercury switch) (SPDT snap switch).
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