Enclosure 6N Pressure Switches
Page 4
PROCESS CONNECTIONS
The process connections are:
Model 130P port: ¼” - 18 NPT male standard.
Model 131P, 181P, and 231P: combined ¼” - 18 NPT female and ½” - 14 NPT male
standard.
Models 132P and 232P: ¼” - 18 NPT female standard; ½ ” - 14 NPT female (G Option) and
7/16-20 SAE (E Option) are available.
Models 125P and 225P: ¼” - 18 NPT female standard
When installing the Pressure Switch, always:
Make sure that the unit and your system have matching threads.
Use the wrench flats provided.
Seal all joints with pipe joint sealing compound.
CAUTION
Avoid excessive torque on all threaded connections
.
WARNING
Do not exceed the marked maximum operating pressure in normal operation.
WARNING
Do not use as a safety device.
The marked Proof Pressure is provided to give the maximum allowable pressure without
causing permanent damage to the pressure switch in the event of an over-pressure
condition. Set pressure relief/safety valves below this setting.
PROCESS MEDIA
Process media must be compatible with the wetted materials listed in Chapter 5 starting
on page 13. Compatibility is defined by an “A” rating in the Chemical Resistance Guide
for Metals and Alloys, the Chemical Resistance Guide for Plastics, and the Chemical
Resistance Guide for Elastomers, all published by Compass Publications, and available
from the National Association of Corrosion Engineers (NACE), Houston, Texas;
telephone 281 228 6200.