When configuring a Series 3G it is important to know the correct Probe Type selection as it’s a little different than the other Warrick Fittings. The Series 3G has three probe type options, labeled 1, 2, 3.
Option 1 should be selected when pairing the 3G fitting with 3R probes, as it comes with female couplers to accept the ¼" threads. Pictured below.
Option 2 should be selected when pairing the 3G fitting with 3T probes. It will include the necessary components (ceramic cap, PTFE sleeve, washer, and nut) to accept the 3T probes.
Option 3 should be selected if you want to use these with the Series 3W wire suspended probes. However, this option provides only a through hole with an O-ring for the 3W wire to pass through. You may also select Option 1 and use the 3Z1B adapter which can then thread into the couplers, similar to a 3R probe.