CHAMBER WITH PIPE REAM OR ON LATHE 

 / 



PROBE FLANGE, (soft solder to 

 copper pipe) 



1/4" PLASTIC OR METAL SPACER 



INSULATING FOAM 



2" schedule 40 DWV PIPE PVC, 

 (machine solder in each end, 

 1/4" x 2 1/8 " ) 



PVC END CAPS, 1. 13 " bore x 2. 12 

 o.d., glued to PVC PIPE 



1" NOMINAL TYPE MED. HARD 

 TEMPER COPPER PIPE 



STEEL POINT, (silver solder 

 to copper pipe) 



Figure 3. --Details of freezing probe. 



7 



