Taylor-Wharton EF-1000 - Manual (Page 15)

BT-472 Rev. B
15
.
Figure 9: Typical fill box installation diagram.
Recommended components for a typical fill box installation:
Fill Line
Vessel Fitting:
Compression Fitting, 1/2” Male Pipe Thread x 7/8" O.D. Tube, Brass
Tubing: Copper, 3/4" Size (7/8” Actual O.D.), Type K (.065” Wall), per ASTM B-88
Fill Box Fitting: Compression Fitting, 1/2” Female Pipe Thread x 7/8" O.D. Tube, Brass
Vent Line
Vessel Fitting:
Compression Fitting, 3/8” Male Pipe Thread x 5/8" O.D. Tube, Brass
Tubing: Copper, 1/2" Size (5/8” Actual O.D.), Type K (.049” Wall), per ASTM B-88
Fill Box Fitting: Compression Fitting, 3/8” Female Pipe Thread x 5/8" O.D. Tube, Brass
Safety Line
Vessel Fittings:
Compression Fitting, 1/2” Male Pipe Thread x 7/8" O.D. Tube, Brass (2 required)
Relief Valve, 1/2" Inlet x 1/2" Outlet, (Consult with factory for part.)
Safety Disc, 1/2" Inlet x 1/2” Outlet, (Consult with factory for part.)
Compression Union Tee Fitting, 7/8” O.D. Tube, Brass
Tubing: Copper, 3/4" Size (7/8” Actual O.D.), Type K (.065” Wall), per ASTM B-88
Fill Box Fitting: Compression Fitting, 1/2” Female Pipe Thread x 7/8" O.D. Tube, Brass
Warning: It is essential that the lines be connected properly. If the vessel safety line were attached to the fill box fill
line or vent line, the vessel pressure relief devices could be prevented from functioning. This will cause a dangerous
pressure build-up in the vessel and in the lines. Never install a shut-off valve on the safety line.
The fill box should be located such that it is accessible for deliveries 24 hours a day. For safety and efficient filling,
keep the length of the lines as short as possible. Actual length of the lines must not exceed 20 feet. Consult with Taylor-
Wharton when installing longer lines. Use large radius bends and minimize the number of bends. If wrought copper
fittings with slip joints are used in the lines, the joints should be silver brazed. Bag-7 silver braze rod is recommended.
Pipe insulation compatible with cryogenic temperatures (urethane based foam pipe insulation or a rigid cellular-glass
pipe insulation) is recommended. All of the lines (fill, vent, and safety) should be insulated.
Fill Line
Vent Line
Safety Line