Type 99
D100260X012
Instruction Manual
Form 589
February 2016
www.fisherregulators.com
Type 99 Pressure Reducing Regulator
Introduction
Scope of the Manual
This manual describes and provides instructions for
installation, startup, adjustment and parts ordering
information of Type 99 pressure reducing regulator
complete with standard P590 Series integral fi lter.
Information on other equipment used with this
regulator can be found in separate manuals.
Figure 1.
Type 99 Regulator with Type 61H (High Pressure) Pilot
W2676
!
WARNINg
Since a pilot-operated regulator is
constructed of both a pilot and a main
valve, care should be used not to exceed
the maximum inlet pressure shown on
the nameplate of either unit. When inlet
pressure exceeds the pilot limitation, a
pilot supply reducing regulator and/or
relief valve is required.
!
WARNINg
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fi re causing property damage and
personal injury or death.
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.
If the regulator 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.
Call a gas service person to service the
unit. Only a qualifi ed person must install
or service the regulator.
