Type 92C Steam Regulator
▲
WARNING
Fisher™ 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.
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. Use qualified personnel
when installing, operating and maintaining
the Type 92C regulator.
Introduction
Scope of the Manual
This instruction manual provides installation,
maintenance and parts ordering information for the
Type 92C steam self-powered control valve and
the Type 6392 pilot. Both the pilot-operated and the
pressure-loaded constructions are covered. The
Type 92C is also available with a Type 6492HM or
6492HTM safety override pilot. The pressure-loading
device and accessories used with this valve are
covered in other manuals.
Description
The Type 92C steam regulator is a gray cast iron,
steel or stainless steel pressure-reducing regulator for
steam or hot air service. This regulator is available with
a Type 6392 pilot for use as a pilot-operated regulator
(Figure 1) or without a pilot for use as a pressure-
loaded regulator. The pilot-operated version uses
inlet pressure as the operating medium; no separate
air supply is required. The pressure-loaded version
is used where remote adjustment of the regulator
pressure setting is required; a 67 or 1301 Series
regulator or 670 Series panel-mounted regulator may
be used as the loading regulator.
A Type 6492HM (or 6492HTM) safety override pilot is
also available for the Type 92C. The Type 6392 pilot is
used in a series installation with the Type 6492HM (or
6492HTM) safety override pilot installed on the upstream
valve. The Type 6492HM (or 6492HTM) safety override
pilot senses pressure downstream of the second valve,
and prevents pressure from rising above safe operating
pressure in the event the downstream valve fails. This
system is approved by ASME B31.1-1989, 122.14.2.A,
and can replace an ASME safety valve when vent
piping is not practical and upstream pressure does not
exceed 400 psig / 27.6 bar. Local codes and standards
may require approval by an appropriate authority prior
to installation.
▲
WARNING
The Type 92C safety override system
does not provide positive shutoff in
dead end service. It is intended for
large distribution systems where steam
leakage will condense before steam
pressure builds up. Downstream piping
and components must be rated for
maximum upstream steam pressure for
dead end service. Failure to do so could
cause personal injury or death.
Figure 1.
Type 92C Pilot-Operated Regulator
W3111_2
Instruction Manual
D100255X012
Type 92C
August 2021
