Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2
Page 3
Overview
AMOT Model 4103D Temperature Valves and Model
4103M Miniature Temperature Valves are ideal for
use on medium and high speed engines. The valves
initiate a warning or shutdown upon a sudden
temperature rise in critical machine parts caused
by tight, worn or out-of-round bearings, tight
packing glands, cracked or broken shafts, torsional
vibration, power or compressor cylinder overload,
lack of lubricant flow and many other sources.
The 4103M valves provide the same low cost
reliability for small bearings that have been field
proven by their larger counterparts (Model 4103D)
in larger stationary bearing applications.
Operation
The range of 4103 temperature valves provides a
reliable sensor, which will trip upon temperature
rise.
The valves have a stainless steel body containing
a normally closed valve sealed with a Viton ball.
The temperature sensing portion is a thin film of
eutectic alloy located near the tip of the fuse rod
assembly. The eutectic alloy, less than 0.01 mm
3
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 is recommended for use with air, gas or lube
oil control systems because it provides a leak-tight
seal.
Typical Application
Figure 1
Do not heat unrestrained fuse rod assemblies.
They fire with sufficient force to cause injury.
Failure to restrain or aim the fuse rod in a safe
direction can lead to serious bodily injury.
