4103D Temperature Detector0 pages

Model 4103 D
Temperature Valves
Patented

FEATURES
Protects stationary bearings and other parts
from damage due to unsafe high temperature
levels.

■ RELIABLE PROTECTION
■ INSTANT RESPONSE
■ COMPACT DESIGN
■ EASE OF INSTALLATION
■ USE WITH OIL, AIR, OR GAS
■ SIZES TO FIT MOST ENGINES

APPLICATIONS
■ HIGH BEARING AND FLUID

TEMPERATURE DETECTION

■ POWER OR COMPRESSOR CYLINDER
OVERLOAD

■ HIGH PACKING GLAND

TEMPERATURE DETECTION

■ HIGH DISCHARGE TEMPERATURE
DETECTION

4103D
Temperature Valve

6710X Replaceable
Fuse Rod Assembly

AMOT Model 4103 Temperature Valves provide a low cost,
reliable sensor which will initiate a warning or shutdown
upon a sudden temperature rise in critical machine parts.
Such temperatures may arise from tight, warn or out-ofround bearings, tight packing glands, cracked or broken
shafts, torsional vibration, power or compressor cylinder
overload, lack of lubricant flow and many other sources.
Model 4103 Valves may be used in medium to large stationary bearings and can be applied to liquid systems by
installing them in a 6721L Well. For similar capabilities in
moving bearing applications, refer to AMOT's Model 4102
Temperature Detectors.
Model 4103 has a stainless steel body containing a normally
closed valve sealed with a Viton ball. The temperature
sensing portion of the 4103 is a thin film of eutectic alloy
located near the tip of the Fuse Rod Assembly. This eutectic
alloy, less than 0.001 cubic inch in volume, secures a spring
loaded fuse rod until the temperature at the sensing end of
the rod melts the alloy. The fuse rod is then instantly
released and allows the spring-loaded rod to unseat the
Viton valve ball. A stainless steel ball is an optional item for
use with lube oil as the control medium if high pressures are
to be encountered. Generally, the standard Viton ball is
recommended for use with air, gas, or lube oil control
systems because it provides a leak-tight seal.

INSTALLATION
AMOT Model 4103 Temperature Valves are the basic
sensing units in a safety system and must be tied into the
system through connecting tubing. Control pressure may be
clean, dry air, or a non-corrosive liquid such as lubricating oil
at up to 90 psi.

FORM 655