Emerson ET124 Series Instruction Manual

Instruction Manual
VCIMD-16109
November 2021
Spence ET124 and ET134 Series
Integrally-Mounted Temperature Regulators
▲
Failure to follow these instructions or
to properly install and maintain this
equipment could result property damage
and personal injury or death.
ET124 and ET134 Series regulators
must be installed, operated and
maintained in accordance with federal,
state and local codes, rules and
regulations and Emerson Process
Management Regulator Technologies,
Inc. instructions.
If the valve vents gas or a leak develops
in the system, service to the unit may be
required. Failure to correct issue 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 ET124 and ET134 Series regulators.
Introduction
Scope of the Manual
This manual provides instructions for the installation,
troubleshooting, maintenance, valve setting and parts
ordering for ET124 and ET134 Series regulators. Refer
to the following documents for the complete details.
• VCIMD-14980 for Types T124 and T134
temperature and pressure pilots.
• VCIMD-14961 for Type E main valve.
• VCIMD-14935 for Type E2 main valve.
WARNING
ET124 and ET134 Series
Figure 1. ET124 or ET134 Series Regulator
Product Description
ET124 and ET134 Series are steam pressure
reducing valves and temperature regulators in a single
pilot-operated valve. These regulators are combination
of Type T124 or T134 pressure and temperature pilot
and a Type E or E2 main valve. Steam pressure on
the heater is modulated in proportion to temperature
and load variations. Pressure control provides
fast, accurate adjustment of heat transfer rate to
demand requirements.
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