Primary Diaphragm N4 SOR Pressure Switches with SPDT Switching Element
6 NN- K 5 - M4 -C2A- YY
Basic SOR pressure switches with standard wetted parts are normally suitable for air, oil, water
and non-corrosive processes. Corrosive service and particular customer requirements may require
optional components. Refer to How to Order on page 3 to locate optional components, such as,
housing, switching elements, diaphragm systems, pressure ports and accessories. Each position in
the model number, except Accessories, must have a designator.
| Weatherproof
Model Number
|
Adjustable
Range (increasing pressure) psi (in. wc.)
|
| 12NN - N66 - N4 - B1A | (0.6 to 2.5)
|
| 12NN - K614 - N4 - B1A | (2.5 to 45.0)
|
| 12NN - K2 - N4 - B1A | 0.4 to 2.0
|
| 12NN - K4 - N4 - B1A | 0.5 to 6.0
|
| 12NN - K5 - N4 - B1A | 0.75 to 12
|
| 12NN - K45 - N4 - B1A | 1 to 16 |
| Weatherproof Model
Number
|
Adjustable
Range (increasing pressure) psi
|
| 4NN - K2 - N4 - B1A | 2 to 8
|
| 4NN - K4 - N4 - B1A | 2 to 25
|
| 4NN - K5 - N4 - B1A | 3 to 50
|
| 4NN - K45 - N4 - B1A | 4 to 75 |
Standard Construction
• Housing: NN - aluminum; L - cast iron
• Switching Element: SPDT; N - 10 amps @
250 VAC; K - 15 amps @ 250 VAC
• Diaphragm & O-ring: N4 - primary (wetted)
diaphragm, TCP; o-ring (wetted) Buna-N
• Pressure Port: 1/4” NPT(F); B1A - aluminum;
F1A - carbon steel
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