Diaphragm Operated Pressure Switches- Series AP
Visible setpoint adjustment compact, low cost.
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.
PHYSICAL DATA
| Temperature Limits: | -30°F to 150°F |
|---|---|
| Pressure Connection: | ¼" NPT female |
| Electrical Rating: | 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 and Cover: | 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 |
FACTORY STOCKED MODELS
| SERIES AP SWITCHES - OPERATING RANGES AND DEAD BANDS | |||||
|---|---|---|---|---|---|
| Model Number |
Model Number |
Switch Type SPDT |
Switch DeadBand | Maximum Pressure |
|
| Low | High | ||||
| AP-153-33 AP-153-37 AP-153-39 AP-7021-153-33 AP-7021-153-37 AP-7021-153-39 |
10"vac.-50" wc 1-30 psig 10-125 psig 10"vac.-50" wc 1-30 psig 10-125 psig |
Mercury Mercury Mercury Snap Snap Snap |
5" wc 0.8 psig 4 psig 8" psig 0.75 psig 3 psig |
6" wc 1.5 psig 10 psig 10" wc 1.5 psig 7 psig |
15 psig 60 psig 160 psig 15 psig 60 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).