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Instruction Manual
D450229T012
February 2019
Types C471, C477 and C486 Internal Valves
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Fisher™ equipment must be installed,
operated and maintained in accordance
with federal, state and local codes
and Emerson Process Management
Regulator Technologies, Inc. (Emerson)
instructions. The installation in most
states must also comply with NFPA
No. 58 and ANSI Standard K61.1.
Only personnel trained in the proper
procedures, codes, standards and
regulations of the LP-Gas industry
should install and service this equipment.
The internal valve must be closed except
during product transfer. A line break
downstream of a pump may not actuate
the excess flow valve. If any break
occurs in the system or if the excess
flow valve closes, the system should be
shut down immediately.
Introduction
Scope of the Manual
This manual covers instructions for the Types C471,
C477 and C486 internal valves.
Description
The valves are typically used on the inlets and
outlets of bobtail and transport trucks and on large
stationary storage tanks. They can also be installed
in-line. Designed for propane, butane or Anhydrous
Ammonia (NH
) at ambient temperatures, the valves
3
WARNING
Types C471, C477 and C486
P1197
TYPE C477
Figure 1. C471, C477 and C486 Series Internal Valves
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.
DOT Internal Self-Closing Stop Valve Requirement–
U.S. Department of Transportation (DOT) regulations
49CFR§178.337-8(a)(4) require each liquid or
vapor discharge outlet on cargo tanks (except for
cargo tanks used to transport chlorine, carbon
dioxide, refrigerated liquid and certain cargo
tanks certified prior to January 1, 1995) to be fitted
with an internal self-closing stop valve. Fisher
"C" Series internal valves comply with the internal
self-closing stop valve requirement under the
DOT regulations.
TYPE C471
TYPE C486
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Table of Contents
Related Manuals for Emerson C471
Summary of Contents for Emerson C471
- Page 1 TYPE C486 occurs in the system or if the excess flow valve closes, the system should be Figure 1. C471, C477 and C486 Series Internal Valves shut down immediately. can be used on other compressed gases, but the user should check with the factory to make sure the valves Introduction are suitable for the particular service.
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Page 2: Specifications
Types C471, C477 and C486 Specifications The Specifications section on the following page shows specifications for Types C471, C477 and C486 internal valves. Body Size and End Connection Styles Approximate Weights Types C471 and C477 2 In. / DN 50 Sizes: Inlet: 2 or 3 in. -
Page 3: Installation
Types C471, C477 and C486 FLOW FLOW LIMITED LIMITED BLEED BLEED BLEED BLEED VALVE CLOSED JET BLEED OPEN VALVE OPEN EXCESS FLOW VALVE CLOSED M1170 LIMITED BLEED VALVE OPEN FLOW JET BLEED EQUALIZATION Figure 2. Operational Schematic Note CAUTION The main poppet will not open if valve... - Page 4 Types C471, C477 and C486 3 IN. ASME CL300 RF FLANGE MODIFIED (BORE 4-5/8 IN. / 117 mm DIAMETER AND 5-3/4 IN. / 146 mm RF) TANK O.D. AND THICKNESS TO SUIT CONTAINER SPECIFICATIONS D MAX 1 / 25 45°...
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Page 5: Warranty Note
The Instruction Manuals for Emerson actuator systems show how to Likewise, if the internal valve is installed on a install the fuse links. - Page 6 Types C471, C477 and C486 In the case of downstream ruptures in hose or piping, EXPLOSION HAZARD a variety of operating conditions routinely encountered during an unloading operation restrict the rate of flow Restrictions incorporated in the through the integral excess flow valve and make such...
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Page 7: Operation
Types C471, C477 and C486 Operation Troubleshooting Since the C470 and C486 Series will not open Internal Valve Will Not Open—This could be due unless the downstream pressure can build-up to to leakage downstream, engaging the pump too equal the inlet pressure, an operating sequence soon or from excessive wear in the internal valve. -
Page 8: Maintenance
Types C471, C477 and C486 Maintenance CAUTION Do not use these internal valves if they leak, fail to work properly or have been damaged or have missing parts. Prompt repairs should be made by a properly trained service person. Continued use without repair can create a hazardous or injurious situation. - Page 9 Types C471, C477 and C486 CAM PROFILE UP HOLE B ORIENTATION NE TO SW GLAND WING GLAND WING *45° T11559 LEVER CAM PROFILE POINTED LEFT * DRILLED PIN HOLE MUST BE 45° TO CL OF CAM BACK VIEW WITHOUT BOLT AND WASHER...
- Page 10 O-ring (key 16) with the proper material matching DN 50, 6 for 3 in. / DN 80) holding the disc retainer the main seals. The standard Types C471 and (key 8) to replace the main seat disc. C477 material is Nitrile (NBR).
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Page 11: Parts Ordering
(key 9) using 20 in-lbs / 2.2 N•m torque to install needed part. the disc retainer (key 8) properly. CAUTION Parts List Types C471, C477 and C486 Internal Valves Failure to properly center the disc retainer to the disc holder may result in Description Part Number improper function of the valve. - Page 12 Types C471, C477 and C486 Description Part Number Description Part Number Main Disc Stub Shaft 2 in. / DN 50 2 in. / DN 50, Stainless steel T2037835072 † Nitrile (NBR) T1154003202 3 in. / DN 80, Stainless steel T2043135072...
- Page 13 Types C471, C477 and C486 TORQUE: 50 TO 75 IN-LBS / 5.6 TO 8.5 N•m TORQUE: 90 TO 100 IN-LBS / 10 TO 11 N•m SECTION A - A STEM TORQUE: 50 TO 75 IN-LBS / 5.6 TO 8.5 N•m...
- Page 14 Types C471, C477 and C486 TORQUE: 50 TO 75 IN-LBS / 5.6 TO 8.5 N•m TORQUE: 90 TO 100 IN-LBS / 10 TO 11 N•m SECTION A - A STEM TORQUE: 50 TO 75 IN-LBS / 5.6 TO 8.5 N•m...
- Page 15 Types C471, C477 and C486 TORQUE: 50 TO 75 IN-LBS / SEE DETAIL C 5.6 TO 8.5 N•m TORQUE: 90 to 100 IN-LBS / 10 to 11 N•m TORQUE: 90 TO 100 IN-LBS / 10 TO 11 N•m SECTION A - A...
- Page 16 Technologies, Inc. All rights reserved. 02/19. Emerson Automation Solutions The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher™ is a mark owned by Fisher Controls International LLC, a...