Installation, operation and maintenance instructions [PDF] (10 pages)
- Brand: Emerson
- Model: PENBERTHY H Series
- Format: PDF
- Key Aspects: Glossary of Technical Terms, Environmental Factors and Restrictions, Standard Operating Procedures
- Updated: 04.06.2026
- Source File: 1755966.pdf
- Pages: 10
- Description: Practical user guide for the Emerson PENBERTHY H Series.
Document Preview & Text Transcription
Before installation these instructions must be read fully and understood
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 paid.
This warranty shall not apply if the product has
been disassembled, tampered with, repaired or
otherwise altered outside of Emerson's 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.
PENBERTHY SERIES H FLAT GLASS GAGES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
TABLE OF CONTENTS
Product warranty������������������������������������������������1
1. About the manual������������������������������������������2
2. Introduction���������������������������������������������������2
2.1 System description���������������������������������2
3. Available models�������������������������������������������2
3.1 Design ratings at maximum and
minimum operating temperatures�������3
4. Inspection������������������������������������������������������4
4.1 Glass inspection�������������������������������������4
4.2 User rating inspection���������������������������4
5. Installation�����������������������������������������������������4
5.1 Piping strain��������������������������������������������4
5.2 Differential thermal expansion�������������4
5.3 Mirror viewing�����������������������������������������4
5.4 Nut retorquing����������������������������������������5
5.5 Belleville washers����������������������������������5
6. Operation�������������������������������������������������������5
6.1 Hydrostatic test��������������������������������������6
7. Maintenance��������������������������������������������������6
7.1 Maintenance procedures�����������������������6
7.2 Troubleshooting�������������������������������������7
8. Removal - disassembly - reassembly���������7
8.1 Disassembly�������������������������������������������7
8.2 Inspection of glass seating surfaces����8
8.3 Reassembly��������������������������������������������8
9. Disposal at end of useful life������������������������9
10. Telephone assistance�����������������������������������9
11. Exploded parts diagrams����������������������������10
valves.emerson.com
© 2017 Emerson. All rights reserved.
VCIOM-04073-EN 17/05
Tables and figures
Table 1 Design ratings of RH and RHR gage��3
Table 2 Design ratings of TH and THR gage���3
Table 3 Design ratings of TH and
THR gage - 316 STS covers����������������3
Table 4 Bolt torque values�������������������������������5
Figure 1 Nut tightening sequence���������������������5
Figure 2 Belleville washer position�������������������5
Figure 3 Gage disassembly��������������������������������7
Figure 4 Nut loosening sequence���������������������7
Figure 5 Exploded parts diagram of
transparent gage�������������������������������10
Figure 6 Exploded parts diagram of
reflex gage�����������������������������������������10
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.
2
PENBERTHY SERIES H FLAT GLASS GAGES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
1 ABOUT THE MANUAL
This manual has been prepared as an aid and
guide for personnel involved in installation or
maintenance. All instructions must be read and
understood thoroughly before attempting any
installation, operation or maintenance.
SAFETY INSTRUCTIONS
Emerson does not have any control over the
manner in which its gage is handled, installed or
used and Emerson cannot and does not guarantee
that a gage is suitable for or compatible with the
user's specific application.
WARNING
Contained fluids may be pressurized and can
unexpectedly exit vessel connections due to
apparatus or material failure. Safety glasses
should be worn when installing a liquid level
gage. Failure to follow instructions could result
in serious physical injury.
2 INTRODUCTION
Penberthy liquid level gages are used to allow
direct visualization of liquid level in vessels.
By peering through the glass, it is possible to
monitor color, clarity and level of a gas/liquid
interface. Gages are available in varying lengths
and configurations (end connect, side connect,
multiple sections, NPT or flange connections,
etc.). Visual indication can be enhanced by
using reflex glass or illuminators (accessory).
2.1 System description
Penberthy gages comprise six basic
components. Each component may vary
slightly, depending on the desired physical and
mechanical properties for the gage. Use the
exploded parts view in Section 11 as additional
reference material.
Chamber: provides a pressure retaining
metallic channel for the liquid to enter and be
viewed. Slot(s) are machined into the chamber
to provide direct visualization of the process
fluid.
Gaskets: seal the gap and prevent leakage
between the chamber and the glass. Gaskets
are available in a variety of materials for
compatibility with the media in the gage.
Glass: allows for visual observation of the
process fluid in the chamber.
Cushion: acts as a protective buffer between
the glass and the cover. For proper sealing,
cushions must be as hard or harder than the
gasket material.
Cover: protects the glass assembly from
external hits and provides a flat, rigid surface
that is used to compress the gage assembly
evenly. The high pressure gage cover
resembles a football. It has significantly more
metal along the center of the sides to provide
more strength and resistance to high pressure
stresses.
Bolting: compresses the components between
the covers (transparent gages) or cover and
chamber (reflex gages).
Shield: (optional on transparent gages) used
to prevent the process media from contacting
the glass.
3 AVAILABLE MODELS
Penberthy high pressure (Series H) liquid level
gages are designed for applications other
than steam/water, requiring a pressure rating
higher than that of Penberthy Series L or M
liquid level gages.
3
PENBERTHY SERIES H FLAT GLASS GAGES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
3.1 Design ratings at maximum and minimum operating temperatures
TABLE 1
Gasket
material
Glass
size
Model RH and RHR reflex
Wetted parts material steel or stainless steel w/B7 bolting
Grafoil
® (standard) or non-asbestos
4-9
4000 psig (27580 kPa) at -20°F (-29°C) to 100°F (38°C)
3080 psig (21240 kPa) at 600°F (316°C)
Top-chem 2000
®
4-9
3000 psig (20680 kPa) at -20°F (-29°C) to 100°F (38°C)
100 psig ( 690 kPa) at 500°F (260°C)
25% glass filled PTFE
4-9
650 psig ( 4480 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
NBR / Buna-N
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
225 psig ( 1550 kPa) at 250°F (121°C)
FKM / Viton
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
180 psig ( 1240 kPa) at 400°F (204°C)
PTFE / Teflon
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
TABLE 2
Gasket
material
Glass
size
Model TH and THR transparent
Wetted parts material steel or stainless steel w/B7 bolting
Grafoil
® (standard) or non-asbestos
4-9
3000 psig (20680 kPa) at -20°F (-29°C) to 100°F (38°C)
2310 psig (15930 kPa) at 600°F (316°C)
Top-chem 2000
®
4-9
3000 psig (20680 kPa) at -20°F (-29°C) to 100°F (38°C)
100 psig ( 690 kPa) at 500°F (260°C)
25% glass filled PTFE
4-9
650 psig ( 4480 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
NBR / Buna-N
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
225 psig ( 1550 kPa) at 250°F (121°C)
FKM / Viton
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
180 psig ( 1240 kPa) at 400°F (204°C)
PTFE / Teflon
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
PCTFE/(Kel-F
®) shields 0.063"
(1.6 mm) thick
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
180 psig ( 1240 kPa) at 400°F (204°C)
TABLE 3
Gasket
material
Glass
size
Model TH and THR transparent
Stainless steel covers
Grafoil
® (standard) or non-asbestos
4-9
1610 psig (11100 kPa) at -20°F (-29°C) to 100°F (38°C)
1040 psig (7170 kPa) at 600°F (316°C)
Top-chem 2000
®
4-9
1610 psig (11100 kPa) at -20°F (-29°C) to 100°F (38°C)
100 psig ( 690 kPa) at 500°F (260°C)
25% glass filled PTFE
4-9
650 psig ( 4480 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
NBR / Buna-N
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
225 psig ( 1550 kPa) at 250°F (121°C)
FKM / Viton
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
180 psig ( 1240 kPa) at 400°F (204°C)
PTFE / Teflon
®
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
150 psig ( 1030 kPa) at 500°F (260°C)
PCTFE/(Kel-F
®) shields 0.063"
(1.6 mm) thick
4-9
300 psig ( 2070 kPa) at -20°F (-29°C) to 100°F (38°C)
180 psig ( 1240 kPa) at 400°F (204°C)
Note: lower temperatures are possible with metallic material variation. (e.g., 316 stainless
construction, Grafoil
® gaskets/cushions useable to –325°F (-198°C)). Temperatures to
1000°F (538°C) are possible with material variation - consult factory.
The pressure and temperature ratings may deviate from the tables if the gasketing materials
of construction and/or bolting are other than those specified. Higher and/or lower temperature
ratings are available with different materials of construction.
To determine the maximum allowable working pressure for a specific temperature within the
design limits stated in the tables, the user should refer to applicable technical data sheets or,
when provided, the specifically stated design limits on a product proposal.
Note: under no circumstances should shields be used in reflex style gages. Installation of shields
in reflex style gages will keep the liquid from coming in contact with the refractive prisms, thereby
prohibiting visualization of the liquid level in the gage.
DANGER
NEVER exceed these design ratings or application data. Exceeding design ratings or application data
may result in mechanical failure of gage components resulting in death, serious personal injury and
property damage.
NOTES
Grafoil
® is a registered trademark of Graftech.
Top Chem 2000
® is a registered trademark of Klinger.
PCTFE (formerly known as Kel-F
® - a registered trademark of 3M) is manufactured by Daikin.
Viton
® and Teflon
® are registered trademarks of E.I. DuPont de Nemours and Company.
