PRX Series
D103231X012
Instruction Manual
Form 5862
October 2015
www.tartarini-naturalgas.com
PRX Series Pilots for Pilot-Operated Pressure
Reducing Regulators
Introduction
Scope of the Manual
This manual provides installation, startup, maintenance and
parts ordering information for the PRX Series pilots and
Type SA/2 filter used together with Pilot-Operated Pressure
Reducing Regulators for high pressure applications.
For information on mounting on Pilot-operated Regulators,
monitoring systems and installations, refer to full
product literature:
Type EZH: D103077X012
Type EZR: D102600X012
Type FL: D103068X012
Product Description
The PRX Series pilots are mainly used in natural gas, air or
other non-corrosive gas applications. They have a double
diaphragm which provides increased accuracy and sensitivity,
an integral damper screw to adjust opening and closing
speeds and a restrictor screw to adjust pilot gain.
The PRX Series pilots can be also be used in other
applications such as relief valve or backpressure regulators
and as a quick dump pilot.
Furthermore, PRX Series pilots have the ability to handle
a wide range of setpoints, from 14.5 to 1160 psig / 1.00 to
80.0 bar.
Type SA/2 Pilot Supply Filter Regulator
The PRX Series pilots are usually used together with the
Type SA/2 pilot supply filter regulator. The Type SA/2
provides a constant supply pressure to the PRX Series pilot
that is approximately 45 psi / 3.1 bar over set pressure. The
Type SA/2 has an integral 5 micron filter.
TYPE PRX-120 TYPE PRX-120/AP TYPE PRX-182
W8346
W8348
P1666
Figure 1. PRX Series Pressure Reducing Pilots
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