Vertical Pressure Gauge 1.5" - Glycerin inside, 0-150 PSI + Side Gauge Connector
Vertical Pressure Gauge 1.5" - Glycerin inside, 1/8" thread, 0-150PSI + pressure gauge connector 1/8" NPT x 1/8" MPT x 1/4" tube OD.
- Used to monitor the pressure going into your membrane housing. Pressure drops is an indication that the filters get clogged and to know when to change them.

