Emerson Tartarini FL Instruction Manual

Instruction Manual
September 2013
Type FL Relief Valve or Backpressure Regulator
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.
Tartarini™ 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.
(Regulator Technologies) instructions.
If the product 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 product.
Introduction
Scope of the Manual
This manual provides instructions for installation,
adjustment, maintenance, and parts ordering information
for the Type FL relief valve or backpressure regulator
with a Type PRX/182 pilot sold in North America. Any
accessories used with this relief valve or backpressure
regulator are covered in their respective manuals.
Description
The Type FL relief valve or backpressure regulator are
accurate pilot-operated, relief valve or backpressure
regulators designed for high-pressure transmission/city gate,
large capacity distribution systems, and power plant feeds.
The Type FL relief provides smooth, reliable operation, tight
shutoff, and long life. The main valve actuator moves in
response to the pilot loading pressure to control upstream
system pressure.
Figure 1. Type FL Relief Valve or Backpressure Regulator
Principle of Operation
A pressure relief valve is a throttling pressure control
device that opens and closes to ensure the inlet pressure
does not rise above a predetermined pressure. Tartarini™
relief valves cannot be used as ASME safety relief valves.
A backpressure regulator is a device that controls and
responds to changes in the upstream pressure. It functions
the same as a relief valve in such a way that it opens on
increasing upstream pressure.
Relief Valve
As long as the inlet pressure is below the set pressure,
the pilot control spring keeps the pilot valve plug closed. Inlet
pressure passes through the restrictor and registers as loading
pressure on the main valve diaphragm chamber. Force from
www.tartarini-naturalgas.com
Type FL
with PRX Series Pilot