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Type 99
D100260X012
Instruction Manual
Form 589
April 2008
www.emersonprocess.com/regulators
Type 99 Pressure Reducing Regulators
Introduction
Scope of the Manual
This manual describes and provides instructions and
parts lists for Type 99 pressure reducing regulators
complete with standard P590 Series integral lter.
However, complete instructions and parts listing for the
Type 1301F pilot supply regulator, and other Fisher
®
equipment, such as monitoring pilots will be found in
separate instruction manuals.
Description
The Type 99 gas regulators provide a broad capacity
for controlled pressure ranges and capacities
in a wide variety of distribution, industrial, and
commercial applications.
A Type 99 regulator has a Type 61L (low pressure),
Type 61H (high pressure), or a Type 61HP (extra
high pressure) pilot integrally mounted to the actuator
casing as shown in Figure 1. The Type 99 regulator
can handle up to 1000 psig (69,0 bar) inlet pressures
(the 1000 psig (69,0 bar) regulator requires a
Type 1301F pilot supply regulator and a Type H110 pop
relief valve). The pilot supply regulator reduces inlet
pressure to a usable 200 psig (13,8 bar) for the extra
high pressure pilot. This regulator comes standard with
O-ring seals on the guide bushing and valve carrier
(key 26, Figure 7) to keep main valve body outlet
pressure from interfering with outlet pressure in the
lower casing assembly (key 29, Figure 9).
Specications
!
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 will be required.
Specications and ratings for various Type 99
constructions are listed in the Specications section
on page 2. Some specications for a given regulator
as it originally comes from the factory are stamped
on nameplates located on the pilot and actuator
spring cases. A tag (key 159, Parts List) additionally
may be installed on the pilot to indicate a regulator
with O-ring stem seal. These regulators and their
installations should be checked for compliance with
applicable codes.
Figure 1. Type 99 Regulator with Type 61H (high pressure) Pilot
W2676