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Series AP Diaphragm Operated Pressure Switch
Visible Setpoint Adjustment, Compact
Reliable and convenient, the 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 weather-proof and explosion-proof housing.
Product Applications
- Low pressure applications
- Instrument air
Starting at $585.50
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.
- Compliance:
- FM, UL. For FM consult factory.
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
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 APF APH APW APWT |
General Purpose Enclosure, NEMA 1 No Enclosure 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) |
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| 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) |
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| CIRCUIT | 2 3 26 36 88 152 153 804 |
2 Circuit 3 Circuit 26 Circuit 36 Circuit 88 Circuit 152 Circuit 153 Circuit 804 Circuit |
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| RANGE | 33 36 37 39 |
-10 to 50” w.c. * 1 to 20 psig 1 to 30 psig 10-125 psig |
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| 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 |
**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 | ||
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| Model | Description | Availability* | Price |
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