Flowserve NRG 16-19 - Manual (Page 12)

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Attention
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The seating surfaces of the steam trap or the test chamber must be accurately
machined.
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Do not insulate the electrode thread with hemp or PTFE tape.
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Observe the specified torques for tightening.
Installation
NRG 16-19, NRG 16-27, NRG 16-28
The measuring electrode NRG 6-28 can be directly screwed into Rhombusline steam traps. For this
purpose unscrew the sealing plug and remove the strainer (see Fig. 7).
The steam traps can be installed in horizontal pipes or in vertical pipes with downward flow.
The measuring electrodes NRG 6-9, NRG 6-27 are to be screwed into the test chambers VKE 6,
VKE 26:
. Check sealing surfaces of the steam trap and the test chamber.
2. Put joint ring onto the seating surface of the electrode. Use only the joint ring supplied with the
electrode.
3. Apply a light smear of grease (e. g. Molykote ® ) to the thread.
4. Screw the measuring electrode into the steam trap or test chamber and tighten it, using an
open-end spanner 32 mm A. F.
The torques required for tightening when cold are:
NRG 6-9: 60 Nm,
NRG 6-27: 60 Nm,
NRG 6-28: 20 Nm.
Tools
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Open-end spanner, 32 mm A. F.
Molykote ® is a registered trademark of DOW Corning Corp., Midland Michigan, USA