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Penberthy 

SerieS N2/K2 Tubular gagecocKS

InstallatIon, operatIon and maIntenance InstructIons

before installation these instructions must be read fully and understood

VCIOM-04034-en 18/03

PrOduCt warranty

emerson warrants its Penberthy products 
as designed and manufactured to be free 
of defects in the material and workmanship 
for a period of one year after the date of 
installation or eighteen months after the date 
of manufacture, whichever is earliest. emerson 
will, at its option, replace or repair any products 
which fail during the warranty period due to 
defective material or workmanship.

Prior to submitting any claim for warranty 
service, the owner must submit proof of 
purchase to emerson and obtain written 
authorization to return the product. Thereafter, 
the product shall be returned to emerson with 
freight prepaid.

This warranty shall not apply if the product has 
been disassembled, tampered with, repaired 
or otherwise altered outside of the emerson 
factory, or if it has been subject to misuse, 
neglect or accident.

The responsibility of emerson hereunder is 
limited to repairing or replacing the product 
at its expense. emerson shall not be liable for 
loss, damage or expenses related directly or 
indirectly to the installation or use of its products 
or from any other cause or for consequential 
damages. it is expressly understood that 
emerson is not responsible for damage or injury 
caused to other products, buildings, personnel 
or property, by reason of the installation or use 
of its products.

This is Emerson's sole warranty and in lieu of 
all other warranties, expressed or implied which 
are hereby excluded, including in particular all 
warranties of merchantability or fitness for a 
particular purpose.

This document and the warranty contained 
herein may not be modified and no other 
warranty, expressed or implied, shall be made 
by or on behalf of emerson unless made in 
writing and signed by the company's general 
manager or director of engineering.

table OF COntents

Product warranty ................................................ 1

1  about the manual..................................... 2
2 Introduction ............................................. 2

2.1  System description ...................................... 2

3  available models ..................................... 3

3.1  Design ratings at max. & min. operating 

temperatures ............................................... 3

3.2  Steam application ........................................ 3

4 Inspection ................................................ 4

4.1  user rating inspection ................................. 4

5 Installation ............................................... 4

5.1 Mounting ....................................................... 4
5.2  Tubular glass installation ............................ 4
5.3  guard rod installation .................................. 4

6 Operation ................................................. 5

6.1  Hydrostatic test ............................................ 5

7 Maintenance ............................................ 5

7.1  Preventative maintenance ........................... 5
7.2  ball check shut-off ...................................... 5
7.3 Troubleshooting ........................................... 6

8  removal - disassembly - reassembly ..... 6

8.1 Disassembly ................................................. 6
8.2 reassembly .................................................. 7

9  disposal at end of useful life ................... 7
10  telephone assistance .............................. 7
11  exploded parts diagram .......................... 8

tables and figures

Table 1  - Standard features .............................. 3
Table 2  - Design ratings .................................... 3
Table 3  - Tubular glass ratings ........................ 3
Figure 1 - PTFe tape wrapping .......................... 4
Figure 2 - exploded parts diagram ................... 8

Emerson.com/FinalControl

© 2017 Emerson. All rights reserved.

Summary of Contents for Penberthy N2 Series

Page 1: ...ges It is expressly understood that Emerson is not responsible for damage or injury caused to other products buildings personnel or property by reason of the installation or use of its products This is Emerson s sole warranty and in lieu of all other warranties expressed or implied which are hereby excluded including in particular all warranties of merchantability or fitness for a particular purpo...

Page 2: ...letely Reverse acting ball checks are available for vacuum service Trim wetted parts that mechanically control the fluid path from the vessel to the tubular glass or other apparatus The ball and stem act to seal and release the fluid In the event of mechanical failure the ball will seat to prevent large quantities of the contained fluid from exiting the vessel Fluid is allowed to exit the vessel i...

Page 3: ... kPa at 300 F 184 C to 100 F 38 C 610 psig 4210 kPa at 500 F 260 C 450 psig 3100 kPa at 750 F 399 C Pressure temperature ranges in the table above are subject to the limitations of the tubular glass See Table 3 below Table 3 tubular glass ratings 16 mm and 19 mm OD Center to center distance for vessel connections Inches mm No corrosion up to 150 F 66 C Steam boiler service up to 425 F 218 C High p...

Page 4: ...ot attempt any installation Notify carrier immediately and request damage inspection Refer to exploded view drawing in Section 11 to inventory parts 4 1 User rating inspection The user should confirm that 1 The gagecock set model number and pressure temperature rating stamped on nameplate conforms to the description on the user s purchase order 2 The operating conditions described in the purchase ...

Page 5: ...s should be evaluated regularly by the user for purposes of maintenance 1 Leakage around stem area 2 Internal stem leak 3 Leakage around stuffing box connection 4 Internal or external corrosion The user must determine an appropriate maintenance schedule necessary for his or her own specific application upon evaluation of his or her own operating experience Realistic maintenance schedules can only ...

Page 6: ... user s responsibility to choose a material of construction compatible with both the contained fluid and the surrounding atmosphere Broken tubular glass replacement follow steps 7 through 12 of the Disassembly and 10 through 16 of the Reassembly instructions 8 Removal Disassembly Reassembly Warning Use only qualified experienced personnel who are familiar with tubular gagecock equipment and thorou...

Page 7: ... to Section 6 for operation of the gagecock when returned to service 9 Disposal at end of useful life Penberthy Series N2 and K2 gagecocks are used in a variety of fluid applications By following the appropriate federal and industry regulations the user must determine the extent of preparation and treatment the Series N2 and K2 gagecocks must incur before their disposal A Material Safety Data Shee...

Page 8: ...igure 2 Neither Emerson Emerson Automation Solutions nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user Penberthy is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electr...

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