FULTON VSRT 50 - Page 37

INSTALLATION  2
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VSRT_IOM_2018-1213
3. Install the top tting (the tting without the
drain port) into the upper tting on the water
bottle using service rated sealant. Wrench tighten
the tting until it is snug and the glass outlet is
pointing at about 5 o’clock (about 1/8 turn from
its nal downward vertical position).
4. Install the bottom tting (the tting with the
drain port) into the lower tting on the water
bottle. Wrench tighten the tting until it is snug
and the glass outlet is pointing directly upward.
5. Verify that the top and bottom ttings are
threaded into the water bottle tappings the same
amount (horizontally).
6. Remove the glass packing nut, friction washer
and glass packing from the ttings and place
them in the same order on either end of the water
gauge glass. Push both packings about 1in (25.4
mm) from the end of the water gauge glass.
7. Gently insert one end of the water gauge glass
into the top gauge tting. Keeping the glass
inside the tting, gently rotate the top tting
clockwise until it is vertically aligned with the
bottom tting. It is crucial that the gauge
glass valves are aligned both vertically and
horizontally. If not aligned, they may leak.
8. Insert the gauge glass into the bottom tting until
it bottoms out, and then gently raise glass about
1/16 in (1.6 mm). Do not allow glass to remain in
contact with any metal surface.
9. Carefully slide the bottom glass packing down
until the glass packing is touching the lower
gauge tting. Carefully slide the top glass packing
up until the glass packing is touching the upper
gauge tting.
10. Hand tighten both glass packing nuts, then
tighten ½ turn more by wrench. Do not over-
tighten. If any leakage occurs, tighten the packing
nut slightly, no more than a ¼ turn at a time, until
the leak stops.
11. When provided, install the protective guard over
the gauge glass assembly.
12. The gauge glass valves are tted with ball checks.
Make sure that the valves are fully open to ensure
that the ball check will function properly in the
event that the gauge glass breaks.
13. Install drain piping from water bottle and lower
water gauge glass tting to the boiler blow o
piping.
TOP GAUGE FITTING
VESSEL
WALL
GAUGE
GLASS
GLASS
PACKING
NUT
GLASS
PACKING
GUARD
ROD
PACKING
GLAND
(OR
FRICTION
WASHER)
BOTTOM
GAUGE
FITTING
DRAIN
VALVE
BALL
CHECK
VALVE
ASME
AUTOMATI
C
BALL
CHECK
VALVE
WASHER
Figure 14 - Sight Gauge Glass