Badger Meter Hydrometer - Manual (Page 5)

Section I
Paragraphs 1-14 to 1-21
are located in drilled holes in front corners of the tube packing
glands and secured by screws. Scales are aligned with tube
index line by adjusting the support posts. Packing glands are
drilled at each side permitting scales to be mounted on both
sides if desired.
1-14. TUBE MOUNTING (fig. 15). Tubes are fitted into
upper and lower end castings and are held in position by
packing glands. The glands are tightened against gaskets to
prevent leakage. The end caps mounted on lower and upper
end castings contain float stops with springs.
1-15. TUBE CONNECTIONS. End casting fittings extend
toward the back of the instrument and are connected in series
by copper tubing. Bottom fittings are provided with bypass
valves when required. The fluid enters a manifold assembly at
the bottom and is then distributed as governed by the position
of the bypass valves. Outlet is from the top of the last tube.
1-16. The ball type bypass valve is manufactured by the
Worcester Valve Co. and is furnished in ¾, 1-1/4 and 2-inch
sizes.
1-17. The valve consists of a bronze body and ball with Buna
N seals to prevent leakage. One end of the handle assembly,
available in varying lengths, is connected to the valve by a
coupling while the bracket on the opposite end is connected to
the shell.
1-18. A 2-inch orifice ball valve is provided, in flowmeters, to
divert a portion of the flow through the calibrated orifice
increasing the flow range of the instrument. Flowmeters
incorporating a bypass orifice are provided with a special inlet
elbow to eliminate entrance effects.
1-19. INSTRUCTION PLATE. An instruction plate,
mounted behind the bezel window provides instructions for
operating the flowmeters and reading the position of the float.
1-20. SHELL. All tubes and fittings are mounted in a welded
steel shell. End castings are bolted to upper and lower
members. Shells are designed for flush panel mounting. A
bezel holding a safety glass window covers the front of the
instrument. A white enameled steel reflector panel is mounted
behind the tubes. Valve shafts extend through the bezel.
Handles are installed on the ends of the valve shafts.
1-21. BURST DISC ASSEMBLY. A burst disc assembly can
be furnished to protect the flowmeter tube in installations
where the flowmeter might be subjected to excessive pressure
surges. This disc assembly is furnished as standard equipment
on any flowmeter incorporating a 48, 99, 109 or 148 size tube
and can also be ordered for any particular flowmeter. The disc
assembly is installed in a tee on the inlet side of the
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