Emerson C471 Datasheet download pdf

Bulletin LP-7:C471/C477

D450244T012

September 2012

www.fisherregulators.com

Types C471 and C477

Jet Bleed Internal

™

Valves

Features

•

Patented rapid equalization bleed area

–

Provides

fast valve response for quick opening.

• Unique Serviceability Features – Stainless trim

parts and poppet designed with integral wrench  at for

easy maintenance.

• Durable Design – Stainless poppet and stem interface

smoothly for a long wear life.

• Excess Flow Closure – Functions when  ow exceeds

the valves rated capacity or piping is sheared off at

the valve.

Figure 1. Types C471 and C477 Jet Bleed Internal

™

Valves

Introduction

Types C477 and C471 Jet Bleed Internal

™

Valves

are designed to provide rapid equalization of tank

pressure and downstream line pressure, providing a fast

valve response time for quick valve opening. These

may be used as primary shutoff valves, excess flow

valves, and back check valves for Propane, Butane,

and NH

(anhydrous ammonia) transfers between

stationary bulk storage tanks and mobile transports

for fill or delivery applications of liquid or vapor gas,

and on in-line applications. The valves can be used in

installations with or without pumps and compressors.

Non Underwriters Laboratories (UL

) listed types are

available with a variety of trim types and body styles and

can be used on other compressed gases, but the user

should check with the factory to make sure the valves

are suitable for the particular service. Actuation of the

valve can be achieved manually, by cable, or with a

pneumatic actuator.

• Back Check Feature – Allows reverse  ow,  ll with or

without actuator device in valve open position.

• 

shaft packing.

• PTFE wear pads Rulon

Bushings at critical

wear points

• Manual, Cable, or Air Open/Close valve actuators.

  





Rulon

is a Trademark of Saint-Gobain Performance Plastics Corporation.

Type C477

Type C471

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Jet Bleed Internal

Bulletin LP-7:C471/C477D450244T012September 2012www.fisherregulators.comTypes C471 and C477 Jet Bleed Internal™ ValvesFeatures • Patented rapid eq

Page 2 - Bulletin LP-7:C471/C477

Bulletin LP-7:C471/C47721. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.2. P

Page 3

Bulletin LP-7:C471/C477 3Figure 2. Typical Operational SchematicPrinciple of Operation Refer to the operational schematic, Figure 2. In view #1, the

Page 4

Bulletin LP-7:C471/C4774MODEL NUMBER SIZE SPRING RATEEXAMPLE: C 4 7 1 N -  - Symbol DescriptionC Product Family4 UL® Listed8 Non UL® Listed7 Duc

Page 5

Bulletin LP-7:C471/C477 5Table 1. Closing Flow - Propane and NH3SIZETYPE NUMBER CLOSING FLOW GPM / L/min PROPANECLOSING FLOW GPM / L/min NH3Straight

Page 6

Bulletin LP-7:C471/C4776468101214161820050100150200250300ValveDifffffefefrererntialPrererssurerer,psigFlowGPMPropane2.367172222494211111.3333322222555

Page 7

Bulletin LP-7:C471/C477 7Figure 7. Type C477-24 Typical Reverse Flow Curve650 /2460600 /22710 50 /189FLOW RATE, GPM / L/min PROPANEVALVE DIFFERENTIAL

Page 8

Emerson C471 Datasheet

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Emerson C471 Datasheet

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