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Types N551 and N851
Parts List
Key
Description
Packing Assembly Kit
Includes packing stack (key 30), O-ring (key 65)
and two washers (key 29).
1
Body, Ductile iron
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
2
Flange, Ductile iron
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
3
Cap Screw
Type N551-10 (NPS 1-1/4 FNPT) (4 Required)
Type N551-16 (NPS 2 FNPT) (4 Required)
Type N551-24 (NPS 3 FNPT) (8 Required)
4*
Seat Ring, Stainless steel
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
5*
Sealing Ring, Nitrile (NBR)
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
6*
O-ring, Nitrile (NBR)
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
7*
Gasket, Graphite
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
8
Poppet Sub-Assembly
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
9
Pipe Plug
15
Shaft, Stainless steel
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
*Recommended spare part.
1. Applicable for Type N551-10 (NPS 1-1/4 FNPT) only.
LPG Equipment
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S.: +1 972 548 3574
For further information visit www.fisherregulators.com
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 business of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or
guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and
maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.
©Emerson Process Management Regulator Technologies, Inc,. 2014, 2015; All Rights Reserved
Part Number
Key
Description
RCN551T0012
16
Sleeve, Nylon (PA)
Type N551-10 (NPS 1-1/4 FNPT)
Type N551-16 (NPS 2 FNPT)
Type N551-24 (NPS 3 FNPT)
17
Nameplate
ERSA05033A0
18
Handle, Aluminum
ERSA05031A0
19
Shoulder bolt, Alloy steel-plate
ERSA05032A0
20
Nut, Carbon steel
21
Roller, Nylon (PA)
ERAA00718A0
22
Fuse link, Brass
T12783T0YW2
23
Bolt, Zinc-plated steel
T20699T0YW2
24
Retainer, Zinc-plated steel
25
Spring, 302 Stainless steel
T12864T0012
Type N551-10 (NPS 1-1/4 FNPT)
1E760432992
Type N551-16 (NPS 2 FNPT)
1E760432992
Type N551-24 (NPT 3 FNPT)
27
Gland, 303/416 Stainless steel
T12857T0012
Type N551-10 (NPS 1-1/4 FNPT)
T12548T0012
Type N551-16 (NPS 2 FNPT)
T12887T0012
Type N551-24 (NPS 3 FNPT)
28*
Spring, 302 Stainless steel
T12858T0012
29*
Washer, Carbon steel (2 Required)
T12547T0012
30*
Packing Stack
T12891T0012
31*
Follower, 174 Stainless steel
32
Retainer, Steel
10A3800X032
33
Bolt, Stainless steel (2 Required)
1H8762X0022
34
Bushing
T12759T0012
35
Washer, Nylon (PA)
36
Latch Block, Aluminum
T12863T0012
37
Spring, 302 Stainless steel
T12839T0012
38
Plunger, Polyester
T12890T0012
39
Cable
40
Screw, Carbon steel
T12964T0012
41
Bolt
T12965T0012
42
Drive Screw, 18-8 Stainless steel (2 Required)
T12966T0012
43
Adaptor Plate, Zinc-plated steel
(1)
T13718T0012
45
Cap Screw
(1)
46
Nut (Not Shown)
(1)
ERSA05039A0
47
Handgrip
ERSA05038A0
61
Spring, Mandrel
ERSA05040A0
62
Spring, Torsion
63
Bolt, Alloy steel
64
Cap Screw, Carbon steel
65*
O-ring, Nitrile (NBR)
Part Number
T12842T0012
T12842T0012
T12893T0012
- - - - - - - - - - -
T20677T0012
T12853T0012
T1166228982
T12847T0012
T13500T0012
1B290524052
T12843T0012
T12844T0012
T12844T0012
T13005T0012
ERSA05036A0
ERSA05036A0
ERSA05037A0
T12851T0012
T1207524082
T12854T0012
T12841T0012
ERSA05035A0
T12499T0012
T12551T0012
T12781T0012
T13800T0012
T13877T0012
T12846T0012
T12849T0012
1E175828982
T12980T0012
1A368228982
T12878T0012
1D617032992
T1022724122
T12928T0012
T13826T0012
T20973T0012
T13803T0012
GE25968X012
T1224006562
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