VALVE UNIT V/U
For appearance and convenience of installation, the valve unit may be mounted outside the icebox. In certain applications and multiple plate systems it may be best to mount it inside. Location of the V/U in multiple plate systems is indicated in the design layout from our application engineer.
On an externally mounted V/U two 1/2" Swagelok fittings fasten the V/U to tubing protruding through the icebox wall. Before cutting the tubing:
•Leave a minimum of 1 1/4" of tube beyond the bulkhead.
•Allow room for wrench access.
On any installation:
•The Valve Unit may be mounted in any position.
•
•The tubing will support the Valve Unit.
•The tubing must bottom in the fitting. For final installation of this unit see the Swagelok text.
•The V/U will attract moisture. If it is mounted externally to the cabinet be sure it is accessible for proper insulation installation after the system has been leak checked and operationally tested.
NOTES ON SWAGELOK FITTINGS
Swagelok fittings come to you completely assembled,
Disassembly before use can result in dirt and foreign material getting into the fitting and causing leaks. If disassembly is necessary, reassemble per drawing.
This is a double ferrule system. The most serious installation problem encountered with SEA FROST is the incorrect assembly of these fittings. Be absolutely sure that you assemble all fittings as in Drawing #1.
To ease assembly slacken the fitting nut slightly before assembly. Then tighten with fingers before tightening with a wrench. (This is to avoid cross threading.)
Step 1. Always leave two inches of straight, undistorted tubing leading to all Swagelok fittings to allow proper connection.
13
