Dwyer Slack-Tube?/sup> Manometers are as accurate as the finest laboratory "U"
gages - yet they are made to roll up compactly for easy carrying and to
withstand rough usage.
Simply unroll the Dwyer Slack-Tube?/sup> Manometer and set up to read static
pressure, vacuum, or differential pressure. Magnetic clips hold it firmly to
any steel surface or hang it on a nail. Turn connectors one revolution to open.
When the pressure is imposed, add the number of inches one column travels up to
the number of inches the other column travels down. When reading is completed
turn connectors to seal columns, roll up manometer into compact coil and tuck
it away in its circular metal case or a tool box. No fluid lost. No loose caps
or inserts to lose.
Dwyer Slack-Tube?/sup> Manometers cover a wide range of pressure readings -
from 4-0-4 inches up to 60-0-60 inches. Use them in determining velocity and
static pressures, for leakage, fan and blower tests, calibrating control
devices, checking gas pressure and many other applications. All models have
flexible vinyl-plastic columns and flexible spring steel scale calibrated in
inches of water using water; and inches of mercury using mercury. Scale is
center-mounted between columns to eliminate parallax error and has a full 2"
sliding zero adjustment.
All Dwyer Slack-Tube?/sup> Manometers feature exclusive molded nylon tubing
connector assemblies with rapid shutoff design in an acrylic plastic top (see
Fig. 5-3) One turn counter clockwise and the instrument is ready for use.
Another turn seals the tubes completely. Molded all-nylon construction makes
this assembly corrosion-proof, leakproof and practically unbreakable. Tubing
connectors extend horizontally allowing 360?freedom. Tubes won't bend or pinch
off.
All models have over pressure safety traps in the top of both columns to
prevent loss of fluid due to over range pressures or surges in pressure. See
Fig. 7-3.
Slack-Tube?/sup> Manometers are suitable for intermittent total pressure to 50
psi and vacuum not exceeding 20" Hg. Avoid temperatures above 130캟 and
continuous high total pressure. Not for use with red gage oil; use only water
or mercury.
STANDARD ACCESSORIES are metal carrying case, magnetic mounting clips, two
rapid shutoff type molded nylon rubber tubing connectors and one bottle of
fluorescein green color concentrate with wetting agent. Mercury is not included
but will be furnished at added cost when specified.
OPTIONAL ACCESSORIES are available in a wide choice and are listed on
Accessories pages,in the Misc. Section
No. 1212 Gas Pressure Kit For Servicing Gas Appliances
A handy, complete kit containing a 16" Slack-Tube?/sup> Manometer, necessary
tubing and connection fittings for checking gas pressures in virtually all gas
appliances such as water heaters, furnaces, stoves and dryers. Different range
manometers may be specified at corresponding prices. Compared to the cost of
purchasing items separately the assembly of component parts into kit form
represents substantial savings.
What the kit consists of:
1 - #1211-16 Slack-Tube?/sup> Manometer, reads pressure to 16" water*
1 - Carrying case, plastic, 8 ? x 7" x 3 1/8"
1 - ?oz. Bottle Fluorescein green color concentrate with wetting agent
2 - 1/8" pipe thread rubber tubing adapters
1 - 1/8" to ? pipe thread bushing
1 - 3 ft. length 3/16" rubber tubing
1 - Rubber tubing adapter to fit standard 7/16" diameter spud.
*Other ranges available
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