Pressure Sensors

The bottom half of the Module Seal consists of a 1/2 inch thick rubber membrane at the top of the mounting post. This provides a hermetic seal for the Isolator Ring keeping the instrument oil in and the air out. The top half of the Module Seal is the “Stinger Fitting” a brass or stainless steel fitting with a needle projecting out of the bottom. Replacing the gauge without compromising the integrity of the vacuum and without removing the isolator ring from the process pipe – is simple:

1. Close the Block Valve.
2. Unscrew the Lock Ring.
3. Pull the gauge and stinger fitting out as a complete unit.
4. Plug the new gauge and stinger assembly into the Module Seal.
5. Re-tighten the Lock Ring.
6. Open the Block Valve.