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Parts List

Key  Description 

Part Number

 

Packing Assembly Kit  

T13090T0012 

 

Includes packing stack (key 30), gasket (key 26) 

 

           and two washers (key 29).  

       

 1 

Body, Ductile iron

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T40333X0012

 

 Type N550-16 (NPS 2 FNPT)  

T40245T0012

 

 Type N550-24 (NPS 3 FNPT) 

T80171T0012

 2 

Flange, Ductile iron

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T20681T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12783T0012

 

 Type N550-24 (NPS 3 FNPT)  

T20699T0012

 3 

Cap Screw

     

 Type N550-10 (NPS 1-1/4 FNPT) (4 Required)  

T12864T0012

 

 Type N550-16 (NPS 2 FNPT) (4 Required)  

1E760432992

 

 Type N550-24 (NPS 3 FNPT) (8 Required) 

1E760432992

 4* 

Seat Ring, Stainless steel

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12857T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12548T0012

 

 Type N550-24 (NPS 3 FNPT) 

T12887T0012

 5* 

Sealing Ring, Nitrile (NBR)

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12858T0012 

 

 Type N550-16 (NPS 2 FNPT)  

T12547T0012

 

 Type N550-24 (NPS 3 FNPT) 

T12891T0012

 6* 

O-ring, Nitrile (NBR)

     

 Type N550-10 (NPS 1-1/4 FNPT)  

10A3800X032

 

 Type N550-16 (NPS 2 FNPT)  

1H8762X0022

 

 Type N550-24 (NPS 3 FNPT) 

T12759T0012

 7* 

Gasket, Graphite

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12863T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12839T0012

 

 Type N550-24 (NPS 3 FNPT) 

T12890T0012

 8 

Poppet Sub-Assembly

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12964T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12965T0012

 

 Type N550-24 (NPS 3 FNPT) 

T12966T0012

 9 

Pipe Plug 

T13718T0012

 15  Shaft, Stainless steel

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T20680T0012

 

 Type N550-16 (NPS 2 FNPT)  

T20675T0012

 

 Type N550-24 (NPS 3 FNPT) 

T20698T0012

Key  Description 

Part Number

 16  Sleeve, Nylon (PA)

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12842T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12842T0012

 

 Type N550-24 (NPS 3 FNPT) 

T12893T0012

 17  Nameplate 

- - - - - - - - - - - 

 18   Handle, Aluminum  

T20677T0012

 19  Shoulder bolt, Alloy steel-plate  

T12853T0012

 20  Nut, Carbon steel  

T1166228982

 21  Roller, Nylon (PA)  

T12847T0012

 22  Fuse link, Brass  

T13500T0012

 23  Bolt, Zinc-plated steel  

1B290524052

 24  Retainer, Zinc-plated steel  

T12843T0012

 25  Spring, 302 Stainless steel

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12844T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12844T0012

 

 Type N550-24 (NPT 3 FNPT) 

T13005T0012

 26*  Gasket, Composition  

T12865T0012

 27  Gland, 303/416 Stainless steel

     

 Type N550-10 (NPS 1-1/4 FNPT)  

T12850T0012

 

 Type N550-16 (NPS 2 FNPT)  

T12850T0012

 

 Type N550-24 (NPS 3 FNPT) 

T13006T0012

 28  Spring, 302 Stainless steel 

T12851T0012

 29  Washer, Carbon steel (2 Required) 

T1207524082

 30  Packing Stack  

T12854T0012

 31  Follower, 174 Stainless steel  

T12841T0012

 32  Retainer, Steel  

T20674T0012

 33  Bolt, Stainless steel (2 Required) 

T12499T0012

 34  Bushing  

T12551T0012

 35  Washer, Nylon (PA)  

T12781T0012

 36  Latch Block, Aluminum  

T13800T0012

 37  Spring, 302 Stainless steel 

T13877T0012

 38  Plunger, Polyester  

T12846T0012

 39   Cable  

T12849T0012

 40  Screw, Carbon steel  

1E175828982

 41  Bolt  

T12980T0012

 42   Drive Screw, 18-8 Stainless steel (2 Required)  

1A368228982

 43

(1)

  Adaptor Plate, Zinc-plated steel  

T12878T0012

 45

(1)

  Cap Screw  

1D617032992

 46

(1)

  Nut (Not Shown) 

T1022724122

 47  Handgrip  

T12928T0012

 61   Spring, Mandrel    

T13826T0012

 62   Spring, Torsion   

T20973T0012

 63  Bolt, Alloy steel 

T13803T0012

*Recommended spare part.

1.  Applicable for Type N550-10 (NPS 1-1/4 FNPT) Only.

Type N550

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D450040T012 © 2001, 2019 Emerson Process Management Regulator 

Technologies, Inc. All rights reserved. 11/19. 

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business of Emerson Automation Solutions.
The contents of this publication are presented for informational purposes 

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are not to be construed as warranties or guarantees, express or implied, 

regarding the products or services described herein or their use or 

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Americas 

McKinney, Texas 75070 USA 

T   +1 800 558 5853 

+1 972 548 3574

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Summary of Contents for Fisher Snappy Joe N550

Page 1: ...ntended for in line use on LP Gas or Anhydrous Ammonia NH3 service The valves may be installed on both ends of transfer hoses where the hose connects the bulk plant piping to the bobtail transport or tank car They provide a quick way of shutting off gas flow in the event of a hose rupture and meet the requirements for such service when correctly installed with a remote release and proper piping su...

Page 2: ...en a storage tank and the transfer hose connection at the truck or tank car loading unloading area They can be placed in a line used either for filling or withdrawing from the storage tank or both The valve shall be installed to shutoff flow from the tank towards the hose enabling the valve to control product loss in case of a hose break WARNING The Type N550 valves are spring closed aided by pres...

Page 3: ...de enough pull on the hose connection to cause a break in the system That break must not occur between the Type N550 and the storage tank Fusible Element Location A fusible element that will close the Type N550 shall be located within five feet of the hose connection If the Type N550 is placed within five feet of the hose connection this requirement is met If not an additional fusible element must...

Page 4: ... of the cable housing and cable housing nut fit into the conical end of the latch block Pulling the excess inner cable through the housing from the remote release end will hold the housing in the latch block 10 Mount the remote release cylinder assembly to a suitable support at the remote release location 7 16 inch 11 mm diameter mounting hole but do not tighten the mounting nut 11 At the remote r...

Page 5: ...e Type P327D see Figure 4 1 Close the Type N550 valve Handle is parallel to the pipe 2 Remove the long end of the external spring from under the latch block DO NOT REMOVE SPRING FROM HANDLE 3 Remove latch bolt s Older valves will have 2 bolts DISCARD CABLE LATCH BLOCK 4 Use a 5 32 inch 4 mm Allen head wrench to screw 1 4 inch 6 4 mm long bolt into bottom hole 5 Tighten until bolt head seats firmly...

Page 6: ... connection When the hose stretches more than the amount of slack left in the cable the tightening cable will pull the lever down and close the Type N550 valve CAUTION Possible hand and finger pinch point between closing Type N550 handle and latch block Handle closes quickly and with extreme force Keep hands and fingers away from handle as it closes 10 Test the remote release and Type N550 operati...

Page 7: ...epaired in the field However due to the special fire resistant seals and assembly techniques repairs should be done only by trained personnel If repair should become necessary contact your local LP Gas Equipment Distributor for information and assistance Only parts manufactured by Emerson Process Management Regulator Technologies Inc should be used for the repair of Fisher Type N550 Valves Be sure...

Page 8: ...eel T12851T0012 29 Washer Carbon steel 2 Required T1207524082 30 Packing Stack T12854T0012 31 Follower 174 Stainless steel T12841T0012 32 Retainer Steel T20674T0012 33 Bolt Stainless steel 2 Required T12499T0012 34 Bushing T12551T0012 35 Washer Nylon PA T12781T0012 36 Latch Block Aluminum T13800T0012 37 Spring 302 Stainless steel T13877T0012 38 Plunger Polyester T12846T0012 39 Cable T12849T0012 40...

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