For turbulent surface or extremely transparent liquids.
Combining high pressure covers and a
large cylindrical chamber, these gages can
improve accuracy in determining turbulent
vessel liquid levels. In addition to
simulating the function of a stilling well and
providing a liquid column approximately
four times the diameter of standard gages,
large chamber gages can provide end
connections up to 2” NPTF that can
accommodate various instrumentation.

All materials in large chamber gages
conform to ASTM specifications.
RLC gages can achieve pressures to
2400 psig [16550 kPa] @ 100°F [38°C]
and TLC gages can achieve pressures to
1580 psig [10890 kPa] @ 100° F [38°C]
for all glass sizes – see ratings table below.

Penberthy does not recommend large
chamber gages for steam/water
applications.

Model RLC - Reflex Large Chamber

For direct mounting to vessel wall.
For application involving high vibration,
highly viscous liquids or liquids with
considerable amounts of solids,
Penberthy offers end users a flat or
radius weld pad gage. Because there
are no nipples through which the
process liquid enters the gage,
clogging potential is eliminated.
When welding the gage to a vessel, it is
extremely important to take proper
precautions to prevent warpage of the
chamber. Penberthy strongly
recommends the use of an optional
steel spacer for welding.
After welding, it is important to check
the flatness of all glass seating surfaces
as described in Penberthy’s Installation,
Operation, and Maintenance manual.
All materials in weld pad gages conform
to ASTM specifications. RMW and TMW
gages can achieve pressures to 2000 psig
[13790 kPa] @ 100°F [38°C] – when
manufactured with size 1 glass
– see table below.

Integral gagecocks can be added to
Penberthy’s weld pad gages. These
gagcocks allow the gage to be isolated for
maintenance without lowering the liquid
level below the gage.

Penberthy does not recommend weld
pad gages for steam/water applications.

Integral valves can be added to Penberthy's weld pad gages. These valves allow the gage to be isolated for maintenance without lowering the liquid level below the gage.

Penberthy does not recommend weld pad gages for steam/water applications.

Model TMW - Transparent Medium Weld Pad

Ultra-High Pressure Flat Glass Gages

For extraordinary pressure and vapor requirements.
The method of clamping and sealing
the glass differs from other gages in
that the glass does not experience
stress concentrations imposed by
bolting. The glass becomes a
floating member between two solidly
bolted blocks of rigid plate.
The pressure activated seal principle
provides a self adjusting means of
maintaining a tight joint between
glass and liquid chamber. The
gasket system compensates for
machining variations.
Because glass can take a
tremendous amount of evenly loaded
compression, the gage can withstand
extremely demanding pressure
requirements.
All materials in TU gages conform to
ASTM specifications. TU gages can
achieve pressures to 6000 psig
[41370 kPa] @ 250°F [121°C].
Pressure rating is not glass size
dependent. A higher temperature
rating 400°F [204°C] @ 6000 psig
[41370 kPa] can be achieved by
using Viton®. Teflon® can achieve
500°F [260°C] @ 6000 psig
[41370 kPa].
Penberthy does not recommend
ultra-high pressure gages for
steam/water applications.

Model TU - Transparent Ultra-High Pressure