Series AP Diaphragm Operated Pressure Switches

Visible Setpoint Adjustment, Compact

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.

Product Applications

  • Low pressure applications
  • Instrument air

Models & Ordering

Build Your Custom Part. Use our Product Configurator

Model Description Usually Ships Price Order
AP-153-33
Ships: Next Day
Price: $262.00
Diaphragm operated pressure switch, range 10" vac-50" w.c. (2.5-12.4 kPa), SPDT mercury switch, low deadband 5" w.c. (1.2 kPa), high deadband 6" w.c. (1.49 kPa), max. pressure 15 psig (1.03 bar). Next Day $262.00 Order
AP-153-37
Ships: Next Day
Price: $246.00
Diaphragm operated pressure switch, range 1-30 psig (.07-2.1 bar), SPDT mercury switch, low deadband 0.4 psig (0.03 bar), high deadband 0.75 psig (0.05 bar), max. pressure 60 psig (4.14 bar). Next Day $246.00 Order
AP-153-39
Ships: Next Day
Price: $262.00
Diaphragm operated pressure switch, range 10-125 psig (.69-8.6 bar), SPDT mercury switch, low deadband 2 psig (0.14 bar), high deadband 6 psig (0.41 bar), max. pressure 160 psig (11.0 bar). Next Day $262.00 Order
AP-7021-153-33
Ships: Next Day
Price: $246.00
Diaphragm operated pressure switch, range 10" vac-50" w.c. (2.5-12.4 kPa), SPDT snap switch, low deadband 8" w.c. (2.0 kPa), high deadband 10" w.c. (2.49 kPa), max. pressure 15 psig (1.03 bar). Next Day $246.00 Order
AP-7021-153-37
Ships: Next Day
Price: $246.00
Diaphragm operated pressure switch, range 1-30 psig (.07-2.1 bar), SPDT snap switch, low deadband 0.75 psig (0.05 bar), high deadband 1.5 psig (0.10 bar), max. pressure 60 psig (4.14 bar). Next Day $246.00 Order
AP-7021-153-39
Ships: Next Day
Price: $246.00
Diaphragm operated pressure switch, range 10-125 psig (.69-8.6 bar), SPDT snap switch, low deadband 3 psig (0.21 bar), high deadband 7 psig (0.48 bar), max. pressure 160 psig (11.0 bar). Next Day $246.00 Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

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 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.)

Features

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

Videos

Model Chart

 

EXAMPLE AP 41 153   36   AP-41-153-36, Diaphragm operated pressure switch, range 1 to 20 psig (.07 to 1.4 bar), SPDT mercury switch
MODEL AP
APS
APR
APF
APH
APW
APWT
          General Purpose Enclosure, NEMA 1
No Enclosure
Manual Reset, NEMA 1
Factory Mutual Approved (153-37, 7021-153-37 only)
Explosion-proof Enclosure, NEMA 7, 9
Weatherproof Enclosure with Drain (NEMA 2, 3R)
Weatherproof Enclosure (NEMA 4)
CONSTRUCTION  
 
 
41
7021
8021
7041
8041
        Mercury Switch, Plated Steel Pressure Port, Buna-N Diaphragm
Mercury Switch, 316SS Pressure Port, Buna-N Diaphragm
Snap Switch, Plated Steel Pressure Port, Buna-N Diaphragm (153, 804 only)
Snap Switch, Plated Steel Pressure Port, Buna-N Diaphragm, 440V (153 only)
Snap Switch, 316SS Pressure Port, PTFE Diaphragm (153, 804 only)
Snap Switch, 316SS Pressure Port, PTFE Diaphragm, 440V (153 only)
CIRCUIT     2
3
26
36
88
89
152
153
804
      2 Circuit
3 Circuit
26 Circuit
36 Circuit
88 Circuit
89 Circuit
152 Circuit
153 Circuit
804 Circuit
      L
U
    APR Manual Reset Increasing (2, 3, 26, 36, 153 only)
APR Manual Reset Decreasing (2, 3, 26, 36, 153 only)
RANGE         33
36
37
39
  -10 to 50” w.c. *
1 to 20 psig
1 to 30 psig
10-125 psig
OPTIONS           ATR
ATW
STR
STW
PT
BREATHER
DRAIN
JCT
PRESET
QS3
Aluminum Tag (Riveted)
Aluminum Tag (Wired)
Stainless Steel Tag (Riveted)
Stainless Steel Tag (Wired)
Paper Tag
Breather *
Drain
Junction Box
Preset and Pressure Check Set Point
QS3 Control Certification
Note:   *(1) APH with 33 range must have breather.


**See Electrical Rating Chart below.

ELECTRICAL RATING MERCURY SWITCH

 
CODE CIRCUIT SUFFIX NO. AC CAPACITY DC CAPACITY HORSEPOWER
120V 240V 440V 120V 240V AC DC
P -2, -3 10A 5A 3A 10A 5A 3/4 1/3
R -26, -36 17A at 120/240/277 VAC, Resistive balance same as above.
S -153 4A 2A NA 4A 2A 1/8 NA
T -88, -89 0.5A 0.25A NA 0.25A 0.125A    

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Photo Downloads

You must be logged in to view this content.
Click here to login to your account.