For less demanding process conditions.
Penberthy’s low pressure gages are
designed to maximize the mechanical
and economical advantages of ductile
iron covers.
All materials in low pressure gages
conform to ASTM specifications.
RL gages can achieve pressures to
2400 psig [16550 kPa] @ 100ºF
[38ºC] and TL gages can achieve
pressures to 2000 psig [13790 kPa]
@ 100ºF [38ºC] when manufactured
with size 1 glass – see ratings
table below.
Penberthy does not recommend low pressure gages for steam/water applications.
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Model RL - Reflex Low Pressure

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Model TL - Transparent Low Pressure

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Medium Pressure Flat Glass Gages
For most common process conditions.
Strength and versatility make
Penberthy’s medium pressure gages
ideal for most common process
conditions. Offshore specification
2600.1 is preferred with medium
pressure gages in offshore and other
corrosive environments.
All materials in medium pressure gages
conform to ASTM specifications.
RM gages can achieve pressures to
3000 psig [20680 kPa] @ 100°F [38°C]
and TM gages can achieve pressures to
2500 psig [17240 kPa] @ 100°F [38°C]
when manufactured with size 1 glass –
see ratings table below.
Although not designed for thermal
cycling, Penberthy allows use of
medium pressure gages for steam/
water applications due to historical
precendence - see Application Report
2781 in Penberthy Catalog.
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Model RM - Reflex Medium Pressure

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Model TM - Transparent Medium Pressure

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Standard/Optional Features
| CONNECTION TYPE |
STANDARD |
OPTIONAL |
| End Connections |
| Threaded |
|
|
| 1/2´´ [12.7 mm] NPTF |
X |
|
| 3/4´´ [19.1 mm] NPTF |
|
X |
| Socketweld |
|
|
| 1/2´´ [12.7 mm] female |
|
X |
| 3/4´´ [19.1 mm] female |
|
X |
| Flanged |
|
X |
| Side or Back (typically reflex only) Connections |
| Threaded |
|
|
| 1/2´´ [12.7 mm] NPTF |
|
X |
| 3/4´´ [19.1 mm] NPTF |
|
X |
| Socketweld |
|
|
| 1/2´´ [12.7 mm] female |
|
X |
| 3/4´´ [19.1 mm] female |
|
X |
| Flanged |
|
X |
| Chambers |
| Recessed Gasket |
|
X |
|
High Pressure Flat Glass Gages
Heavy duty construction for high pressure resistance.
Penberthy engineers its high pressure
cover to allow maximum rated
pressure regardless of glass size.
High pressure gages resist torsional
stresses exceptionally well to provide
a process gage for the most
demanding applications.
All materials in high pressure gages
conform to ASTM specifications.
RH gages can achieve pressures to
4000 psig [27580 kPa] @100°F [38°C]
and TH gages can achieve pressures
to 3000 psig [20680 kPa] @ 100°F
[38°C] for all glass sizes – see ratings
table below.
Penberthy does not recommend high
pressure gages for steam/water
applications. They are designed for high
pressure, but low thermal cycle duty.
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Model RH - Reflex High Pressure

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Model TH - Transparent High Pressure

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For additional information on features, specifications, materials and standard sizes, contact Penberthy or your local distributor.
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