MSEV Series and USHX Hardware Installation Manual Rev 1.7
The MSEV series valve cannot be installed in a downwards orientation (shown in
curved red arrows). It will not function as intended if installed in this way.
Figure 2-2: MSEV series valve installation orientation
5. Wrap the valve body with a wet cloth before brazing.
6. Connect the MSEV series valve to the inlet of the evaporator by brazing. Allow the valve to air-
cool after brazing.
While brazing, direct heat away from the valve body. Ensure that the temperature
of the valve body does not exceed 221°F (105°C).
7. It is mandatory to install a brand-new filter drier at the inlet of the MSEV series valve as indicated
in Figure 2-1. It can be installed at about 6” away from the valve. The MSEV series valve must be
protected against contaminants to ensure its optimal operation.
DMQ highly recommends using a filter drier with a 20 micron filtration rating.
8. The MSEV series valve installation process is now complete.
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