Spence Types T124 and T134 Temperature and
Pressure Pilots
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WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire and/or chemical contamination
causing property damage and personal
injury or death.
Emerson temperature pilot must be
installed, operated and maintained
in accordance with federal, state and
local codes, rules and regulations
and Emerson Process Management
Regulator Technologies, Inc.
(Emerson) instructions.
If the temperature pilot vents gas or a
leak develops in the system, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualified person shall install or service
the Types T124 and T134.
Introduction
Scope of the Manual
This manual provides instructions for installation,
maintenance and parts information for the Types T124
and T134 temperature pilot.
Product Description
The steam pressure reducing valve and temperature
regulator in a single pilot-operated valve is a
combination of Type T124 or T134 Pilot and a Type
E or C Main Valve. Steam pressure is modulated
in proportion to temperature and load variations.
Pressure control provides fast, accurate adjustment of
heat transfer rate to demand requirements.
This pilot is primarily intended for use on
instantaneous heaters. By combining both temperature
and pressure control in one pilot, unusually close
regulation of temperature is achieved through the
anticipation of fast load changes. An additional benefit
of this pilot is that pressure reduction and temperature
control can be provided with a single regulator. For
pressures not to exceed 20 psi / 1.38 bar, Type T134
should be used. For pressures between 20 and
125 psi / 1.38 and 8.62 bar, Type T124 should
be used.
Figure 1
. Types T124 and T134 Temperature Pilot
Instruction Manual
VCIMD-14980
November 2021
Types T124 and T134
