Emerson C471, C477 Brochure
MODELS
2-inch NPT: Type C477-16
2-inch NPT Tee Body: Type C471-16
3-inch NPT: Type C477-24
3-inch NPT Tee Body: Type C471-24
3-inch Single Flange: Type C484-24
3-inch Double Flange: Type C483-24
OPTIONS
Seat Discs
Standard disc and O-ring material is Nitrile (NBR),
Neoprene (CR), Viton®, Tefl on® and Kalrez® available
for most types.
Excess Flow Springs
2-inch Valve: 100, 150, and 250 GPM
3-inch Flanged: 150, 250, and 400 GPM
3-inch NPT: 150, 250, 350, and 450 GPM
SUPERIOR SERVICE AND SUPPORT
Fisher® branded LP-gas products are available
through distributors worldwide each offering local
technical support and service. Factory training
on Fisher LP-gas valves, internal valves and relief
products is available to all distributors.
The New Fisher® Internal Valve
An Industry Original Just Got Faster
McKinney, Texas 75070 USA
3200 Emerson Way
Regulator Technologies, Inc.
Emerson Process Management
Fisher LP-gas product specifi cations are available
online at www.fisherregulators.com.
LP-Gas Equipment
Emerson Process Management
Regulator Technologies, Inc.
North America
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
LP-Gas Equipment
Emerson Process Management
Regulator Technologies, Inc.
Europe
Chartres 28008, France
Tel: +33 2 37 33 47 00
D450219T012 © 2009, 2013 Emerson Process Management Regulator Technologies, Inc. All rights reserved.
Printed in the U.S.A. Jet Bleed Internal, Fisher, Emerson Process Management, and the Emerson Process
Management design are marks of one of the Emerson Process Management group of companies. All other
marks are the property of their respective owners.
LP-Gas Equipment
Emerson Process Management
Regulator Technologies, Inc.
Asia-Pacifi c
Singapore 128461, Singapore
Tel: +65 6770 8337
LP-Gas Equipment
Emerson Process Management
Regulator Technologies, Inc.
Latin America
Tlalnepantla 54080, Mexico
Tel: 011 52 55 2699 0400
www.fisherregulators.com
For Information Call: 1 800 558 5853
PERFORMANCE and VALUE
New Fisher® Jet Bleed Internal™ Valves target speed
of opening issues commonly encountered in the
operation of internal valves. Enlarged bleed ports
provide faster equalization of tank pressure and
downstream line pressure, giving a faster response
time for quick valve opening.
• Allows operators to be more efficient
• Reduces potential for damage caused by
running pumps dry
• Improved service features for
easy maintenance
INCREASED BLEED AREA
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OPERATION
Valve is held closed permitting a
tight seal by both tank pressure
and the valve’s closing spring.
DURABILITY
Newly redesigned stem provides a smooth
interface with the poppet delivering
exceptional wear performance and
extended valve life.
FIELD PROVEN FEATURES
Fisher C Series Internal Valves have long been known
for reliability, the Fisher Jet Bleed Internal™ Valves
carry that tradition forward.
• Spring loaded TFE stub shaft packing
• Removable cam and gland housings
• TFE wear pads at critical points
• Rulon® bushings
• Repairable seats
As the actuator moves the
operating lever to mid-stroke,
rapid equalization occurs
through the enlarged bleed ports.
SERVICEABILITY
New features have been added to the Jet Bleed
Internal™ Valve trim:
• New Jet Bleed Internal™ Valve trim sets
• Simple Design – No fi lters to change or
• All stainless steel trim construction
• Stainless steel hex head bolts
• Wrench/Vise fl ats added to the main poppet
*Trim sets are not interchangeable with Type C404 valves.
Tank and downstream volume
pressures equalize quickly with
the Jet Bleed Internal™ Valve trim
and the main poppet opens.
are interchangeable with current
Fisher Valve products*
external equipment to maintain
Open
Downstream Pipe Pressure
Jet Bleed Internal™ Technology
Others
Open
Opens in a fraction of the time!
Time to Equalize
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