Hydran* M2-X Instruction Manual 
 
MA-029  Rev. 1.0,  30-Jul-18 
 
4.3.5  Installing the Sensor onto the Valve 
The sensor has 1.5 in (approximately 38 mm) NPT male threads to screw onto the 
valve.  If an adaptor is not required to mount the sensor onto the valve, skip steps 1 
to 3. 
 
1.  If  using  a  finned,  high-temperature  adaptor,  a  thin  layer  of  thermal  joint 
compound  must be applied  on the  outside  of the  mounting  adaptor before 
assembling all parts; remove excess of compound with solvent. 
2.  Wrap PTFE tape on the adaptor’s threads. 
Use  only  PTFE tape  to  seal  the  adapter’s  threads.   Wrap  at 
least four to five layers of tape around the threads. 
3.  Screw the adaptor onto the valve and tighten it using an adjustable wrench. 
Never use a wrench with jagged jaws. 
4.  Wrap PTFE tape on the sensor’s threads. See Figure 4-5. 
Use only PTFE tape to seal the sensor’s threads.  Wrap at 
least four to five layers of tape around the threads. 
Figure 4-5: Wrap the Sensor’s Threads with PTFE 
 
5.  Loosen the bleed screw. 
6.  Install the sensor clamp around the sensor.  See Figure 4-6 overleaf. 
Always wrap the tape counter to 
the threads, as shown here.